Here is my new weekly weather quiz question. What are “Instrument Flight Rules (IFR)?

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast and sent much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again. There will be frontal activity returning by the end of the week, but not of the bitter cold airflow nature.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 73 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 127 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 63 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM THURSDAY  FOR THE GRANDE RONDE VALLEY.
• A HIGH WIND WATCH IS IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING FOR CENTRAL AND EASTERN LAKE COUNTY.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 1 PM MST (MOUNTAIN STANDARD TIME) FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• A mix of clouds and sun and a bit warmer today, becoming mostly cloudy tonight,
• Mostly cloudy and a bit warmer with a (40%) chance of rain Thursday afternoon, rain at night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with rain Friday, then cloudy with a good (50%) chance of rain Friday night.
• highs 45-50 lows 29-39.
• Cloudy with a good (50%) chance of AM rain, a bit warmer with rain likely (70%) Saturday afternoon, rain Saturday night,
• Mostly cloudy and a bit cooler with rain Sunday, a good (50%) chance of rain at night,
• Cloudy and a bit warmer with a slight (20%) chance of rain Monday, mostly cloudy with a slight (20%) chance of rain Monday night,
• Then cloudy with a (40%) chance of rain and a bit warmer Tuesday.
• highs 52-47 warming to 50 Tuesday lows 40-37. (seasonal averages high 50 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy and a bit warmer today, partly cloudy this evening, mostly cloudy late tonight,
• Cloudy and a bit cooler with a slight (20%) chance of rain Thursday (afternoon snow level 3,000 ft.), rain likely (70%) at night (under 0.10 in. of rain possible, snow level 3,500 ft.),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Friday afternoon, then mostly cloudy with a slight (20%) chance of rain Friday night.
• highs 55-52 lows 35-40 cooling to 38 Friday night.
• Cloudy with a (30%) chance of rain Saturday, showers Saturday night,
• Mostly cloudy with showers and a bit cooler Sunday, a good (50%) chance of showers at night,
• Then mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday and Tuesday, a slight (20%) chance of rain late Monday night.
• highs 52-47 warming back to 52 Tuesday lows 42-35. (seasonal averages high 52 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and slightly warmer today, partly cloudy this evening,  mostly cloudy late tonight,
• Cloudy with a (40%) chance of coastal rain and a bit warmer Thursday while a (40%) chance of AM inland rain with inland rain Thursday afternoon (under 0.10 in. of rain possible), breezy (Wind: SE 15-25 mph), rain Thursday night (0.25 in. of rain possible) breezy (Wind: S 20-30 mph gusts to 45 mph),
• Mostly cloudy with AM rain, a bit cooler with rain likely (70%) Friday afternoon, then a good (50%) chance of rain Friday night.
• highs 54-56 cooling back to 54 Friday lows 36-42.
• Mostly cloudy with a good (50%) chance of rain and a bit warmer Saturday, showers Saturday night,
• Mostly cloudy and a bit cooler with showers Sunday, a good (50%) chance of rain at night,
• Mostly cloudy with a slight (20%) chance of showers Monday, a slight (20%) chance of rain late Monday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain Tuesday.
• highs 55-52 warming to 54 Tuesday lows 42-37. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County

• A mix of clouds and sun and a bit warmer today, partly cloudy tonight,
• Mostly cloudy with a (30%) chance of rain and snow and  a bit cooler Thursday afternoon, good (50%) chance of evening rain and snow, rain and snow likely (70%) late Thursday night (1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with a rain and snow likely (70%) Friday and breezy (1-4 in. of snow possible), mostly cloudy with a (40%) chance of rain and snow at night.
• free air freezing level 6,500 ft. today, 7,000 ft. tonight, snow level 4,500 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, then 4,000 ft. Friday night.
• highs 44-35 lows 22-29 cooling to 25 Friday night.
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday, rain and snow Saturday night,
• Mostly cloudy and a bit cooler with rain and snow Sunday, rain and snow likely (70%) at night,
• Mostly cloudy with a good (50%) chance of rain and snow Monday, a slight (20%) chance of rain and snow Monday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain and snow Tuesday.
• snow level  4,000 ft.  Saturday, 5,000 ft. Saturday night, 4,000 ft. Sunday and Sunday night, 3,000 ft. Monday, 3,500 ft. Monday night, then 4,000 ft. Tuesday.
• highs 37-34 warming to 38 Tuesday lows 28-23.

__________

Here is my new weekly weather quiz question. What are “Instrument Flight Rules (IFR)?

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast and sent much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again. There will be frontal activity returning by the end of the week, but not of the bitter cold airflow nature.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM THURSDAY  FOR THE GRANDE RONDE VALLEY.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 1 PM MST (MOUNTAIN STANDARD TIME) FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, becoming mostly cloudy late tonight,
• A mix of clouds and sun and a bit warmer Wednesday, becoming mostly cloudy Wednesday night,
• Cloudy and a bit warmer with a (40%) chance of rain Thursday afternoon, rain at night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with rain Friday, then cloudy with a good (50%) chance of rain Friday night.
• lows 28-39 highs 45-50.
• Cloudy with a good (50%) chance of AM rain, a bit warmer with rain likely (70%) Saturday afternoon, rain Saturday night,
• Mostly cloudy and a bit cooler with rain Sunday, a good (50%) chance of rain at night,
• Cloudy and a bit warmer with a slight (20%) chance of rain Monday, mostly cloudy with a slight (20%) chance of rain Monday night,
• Then cloudy with a (40%) chance of rain and a bit warmer Tuesday.
• highs 52-47 warming to 50 Tuesday lows 40-37. (seasonal averages high 50 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy tonight,
• Mostly cloudy and a bit warmer Wednesday, partly cloudy in the evening, mostly cloudy late Wednesday night,
• Cloudy and a bit cooler with a slight (20%) chance of rain Thursday (afternoon snow level 3,000 ft.), rain likely (70%) at night (under 0.10 in. of rain possible, snow level 3,500 ft.),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Friday afternoon, then mostly cloudy with a slight (20%) chance of rain Friday night.
• lows 32-40 cooling to 38 Friday night highs 55-52.
• Cloudy with a (30%) chance of rain Saturday, showers Saturday night,
• Mostly cloudy with showers and a bit cooler Sunday, a good (50%) chance of showers at night,
• Then mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday and Tuesday, a slight (20%) chance of rain late Monday night.
• highs 52-47 warming back to 52 Tuesday lows 42-35. (seasonal averages high 52 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy tonight,
• Mostly cloudy and slightly warmer Wednesday, partly cloudy in the evening,  mostly cloudy late Wednesday night,
• Cloudy with a (40%) chance of coastal rain and a bit warmer Thursday while a (40%) chance of AM inland rain with inland rain Thursday afternoon (under 0.10 in. of rain possible), breezy (Wind: SE 15-25 mph), rain Thursday night (0.25 in. of rain possible) breezy (Wind: S 20-30 mph gusts to 45 mph),
• Mostly cloudy with AM rain, a bit cooler with rain likely (70%) Friday afternoon, then a good (50%) chance of rain Friday night.
•  lows 32-42 highs 54-56 cooling back to 54 Friday.
• Mostly cloudy with a good (50%) chance of rain and a bit warmer Saturday, showers Saturday night,
• Mostly cloudy and a bit cooler with showers Sunday, a good (50%) chance of rain at night,
• Mostly cloudy with a slight (20%) chance of showers Monday, a slight (20%) chance of rain late Monday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain Tuesday.
• highs 55-52 warming to 54 Tuesday lows 42-37. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Becoming mostly cloudy late tonight,
• A mix of clouds and sun and a bit warmer Wednesday, partly cloudy Wednesday night,
• Mostly cloudy with a (30%) chance of rain and snow and  a bit cooler Thursday afternoon, good (50%) chance of evening rain and snow, rain and snow likely (70%) late Thursday night (1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with a rain and snow likely (70%) Friday and breezy (1-4 in. of snow possible), mostly cloudy with a (40%) chance of rain and snow at night.
• free air freezing level 6,500 ft. tonight and Wednesday, 7,000 ft. Wednesday night, snow level 4,500 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, then 4,000 ft. Friday night.
• lows 22-29 cooling to 25 Friday night highs 44-35.
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday, rain and snow Saturday night,
• Mostly cloudy and a bit cooler with rain and snow Sunday, rain and snow likely (70%) at night,
• Mostly cloudy with a good (50%) chance of rain and snow Monday, a slight (20%) chance of rain and snow Monday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain and snow Tuesday.
• snow level  4,000 ft.  Saturday, 5,000 ft. Saturday night, 4,000 ft. Sunday and Sunday night, 3,000 ft. Monday, 3,500 ft. Monday night, then 4,000 ft. Tuesday.
• highs 37-34 warming to 38 Tuesday lows 28-23.

__________

Here is my new weekly weather quiz question. What are “Instrument Flight Rules (IFR)?

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast is sending much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again. There will be frontal activity returning by the end of the week, but not of the bitter cold airflow nature.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 78 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 87 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 55 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A FREEZE WARNING IS IN EFFECT UNTIL 10 AM TODAY  FOR THE SOUTH CENTRAL OREGON COAST.
• A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH THIS MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 1 PM MST (MOUNTAIN STANDARD TIME) FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy, possible sun breaks, and a bit warmer today, mostly cloudy tonight,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy at night,
• Cloudy and a bit cooler with a (30%) chance of rain Thursday afternoon, then cloudy with a good (50%) chance of rain Thursday night.
• highs 45-50 cooling to 46 Thursday lows 28-36.
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, cloudy with a good (50%) chance of evening rain, a slight (20%) chance of rain late Friday night,
• Cloudy and a bit warmer with a good (50%) chance of rain Saturday, rain likely (70%) at night,
• Mostly cloudy and a bit cooler with rain Sunday, cloudy with a good (50%) chance of rain Sunday night,
• Then cloudy and a bit warmer with a (40%) chance of rain Monday.
• highs 49-52 cooling to 46 Sunday warming to 48 Monday lows 37-40 cooling to 38 Sunday night. (seasonal averages high 50 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy and warmer today, mostly cloudy tonight,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy with patchy fog late at night,
• Cloudy and a bit cooler with a slight (20%) chance of rain Thursday, a good (50%) chance of evening rain, then showers likely (70%)  late Thursday night.
• highs 50-54 cooling back to 50 Thursday lows 33-39.
• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers Friday afternoon, a slight (20%) chance of showers Friday night,
• Cloudy and a bit warmer with a (40%) chance of rain Saturday, rain at night,
• Mostly cloudy with rain and a bit cooler Sunday, evening rain likely (70%), then a good (50%) chance of rain late Sunday night,
• Then mostly cloudy with a (30%) chance of rain Monday.
• highs 50-53 cooling to 48 Sunday and Monday lows 38-42 cooling to 40 Sunday night. (seasonal averages high 52 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with widespread AM coastal frost, mostly cloudy and slightly warmer this afternoon and tonight,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of coastal rain at night,
• Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with rain likely (70%) Thursday afternoon and evening, then showers likely (70%) late Thursday night.
• highs 50-55 lows 33-39.
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, a good (50%) chance of showers Friday night,
• Mostly cloudy with a good (50%) chance of AM rain, rain and a bit warmer Saturday afternoon, rain at night,
• Mostly cloudy and a bit cooler with rain Sunday, evening rain likely (70%), a good (50%) chance of rain late Sunday night,
• Then mostly cloudy with a (30%) chance of rain Monday.
• highs 53-56 cooling to 52 Sunday and Monday lows near 40. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit warmer today, mostly cloudy tonight,
• Mostly cloudy and a bit warmer Wednesday, partly cloudy in the evening, mostly cloudy late at night,
• Mostly cloudy with a slight (20%) chance of rain and snow and  a bit warmer Thursday, then good (50%) chance of rain and snow Thursday night.
• free air freezing level 5,000 ft. rising to 7,000 ft. this afternoon, 6,500 ft. falling to 6,000 ft. late tonight, 6,500 ft. rising to 7,500 ft. Wednesday afternoon, 7,000 ft. falling to 6,500 ft. Wednesday night, snow level 3,500 ft. rising to 4,500 ft. Thursday afternoon, then 4,000 ft. falling to 3,500 ft. late Thursday night.
• highs 39-42 cooling to 39 Thursday lows 26-24 warming to 28 Thursday night.
• Mostly cloudy and a bit cooler with a rain and snow likely (70%) Friday, mostly cloudy with a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday, rain and snow likely (70%) at night,
• Mostly cloudy and a bit cooler with rain and snow Sunday, evening rain and snow likely (70%), a good (50%) chance of rain and snow Sunday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Monday.
• snow level 3,500 ft. rising to 4,000 ft. Friday  afternoon, 4,000 ft. Friday night, 3,500 ft. rising to 4,500 ft.  Saturday afternoon, 5,000 ft. Saturday night, 3,500 ft. Sunday and Sunday night, then 3,000 ft., rising to 3,500 ft. Monday afternoon.
• highs 34-37 cooling to 32 Monday lows 25-27 cooling to 25 Sunday night.

__________

Here is my new weekly weather quiz question. What are “Instrument Flight Rules (IFR)?

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast is sending much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again. There will be frontal activity returning by the end of the week, but not of the bitter cold airflow nature.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A FREEZE WARNING IS IN EFFECT FROM 7 PM TONIGHT UNTIL 10 AM TUESDAY  FOR THE SOUTH CENTRAL OREGON COAST.
• A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 1 PM MST (MOUNTAIN STANDARD TIME) FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, mostly cloudy late tonight,
• Mostly cloudy, possible sun breaks, and a bit warmer Tuesday, mostly cloudy Tuesday night,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy at night,
• Cloudy and a bit cooler with a (30%) chance of rain Thursday afternoon, then cloudy with a good (50%) chance of rain Thursday night.
• lows 23-30 warming to 36 Thursday night highs 45-50 cooling to 46 Thursday.
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, cloudy with a good (50%) chance of evening rain, a slight (20%) chance of rain late Friday night,
• Cloudy and a bit warmer with a good (50%) chance of rain Saturday, rain likely (70%) at night,
• Mostly cloudy and a bit cooler with rain Sunday, cloudy with a good (50%) chance of rain Sunday night,
• Then cloudy and a bit warmer with a (40%) chance of rain Monday.
• highs 49-52 cooling to 46 Sunday warming to 48 Monday lows 37-40 cooling to 38 Sunday night. (seasonal averages high 50 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly clear this evening, becoming partly cloudy late tonight,
• Mostly cloudy and warmer Tuesday, mostly cloudy Tuesday night,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy with patchy fog late at night,
• Cloudy and a bit cooler with a slight (20%) chance of rain Thursday, a good (50%) chance of evening rain, then showers likely (70%)  late Thursday night.
• lows 27-33 warming to 39 Thursday night highs 50-54 cooling back to 50 Thursday.
• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers Friday afternoon, a slight (20%) chance of showers Friday night,
• Cloudy and a bit warmer with a (40%) chance of rain Saturday, rain at night,
• Mostly cloudy with rain and a bit cooler Sunday, evening rain likely (70%), then a good (50%) chance of rain late Sunday night,
• Then mostly cloudy with a (30%) chance of rain Monday.
• highs 50-53 cooling to 48 Sunday and Monday lows 38-42 cooling to 40 Sunday night. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly clear this evening, becoming partly cloudy with widespread coastal frost late tonight and Tuesday AM, mostly cloudy and slightly warmer Tuesday afternoon and Tuesday night,
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of coastal rain at night,
• Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with rain likely (70%) Thursday afternoon and evening, then showers likely (70%) late Thursday night.
• lows 28-39 highs 50-55.
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, a good (50%) chance of showers Friday night,
• Mostly cloudy with a good (50%) chance of AM rain, rain and a bit warmer Saturday afternoon, rain at night,
• Mostly cloudy and a bit cooler with rain Sunday, evening rain likely (70%), a good (50%) chance of rain late Sunday night,
• Then mostly cloudy with a (30%) chance of rain Monday.
• highs 53-56 cooling to 52 Sunday and Monday lows near 40. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy Tuesday night,
• Mostly cloudy and a bit warmer Wednesday, partly cloudy in the evening, mostly cloudy late at night,
• Mostly cloudy with a slight (20%) chance of rain and snow and  a bit warmer Thursday, then good (50%) chance of rain and snow Thursday night.
• free air freezing level 4,000 ft. rising to 4,500 ft. late tonight, 5,000 ft. rising to 7,000 ft. Tuesday afternoon, 6,500 ft. falling to 6,000 ft. late Tuesday night, 6,500 ft. rising to 7,500 ft. Wednesday afternoon, 7,000 ft. falling to 6,500 ft. Wednesday night, snow level 3,500 ft. rising to 4,500 ft. Thursday afternoon, then 4,000 ft. falling to 3,500 ft. late Thursday night.
• lows 17-26 cooling to 24 Wednesday night warming to 28 Thursday night highs 39-42 cooling to 39 Thursday.
• Mostly cloudy and a bit cooler with a rain and snow likely (70%) Friday, mostly cloudy with a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday, rain and snow likely (70%) at night,
• Mostly cloudy and a bit cooler with rain and snow Sunday, evening rain and snow likely (70%), a good (50%) chance of rain and snow Sunday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Monday.
• snow level 3,500 ft. rising to 4,000 ft. Friday  afternoon, 4,000 ft. Friday night, 3,500 ft. rising to 4,500 ft.  Saturday afternoon, 5,000 ft. Saturday night, 3,500 ft. Sunday and Sunday night, then 3,000 ft., rising to 3,500 ft. Monday afternoon.
• highs 34-37 cooling to 32 Monday lows 25-27 cooling to 25 Sunday night.

__________

Here is my new weekly weather quiz question. What are “Instrument Flight Rules (IFR)?

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast is sending much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 66 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 49 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 6 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A FREEZE WARNING IS IN EFFECT UNTIL NOON TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND CHILL ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WIND CHILL ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly sunny and a bit cooler today, partly cloudy this evening, mostly cloudy late tonight,
• Cloudy, possible sun breaks, and a bit warmer Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• highs 39-48 lows 24-29.
• Cloudy and a bit cooler with a good (50%) chance of rain Thursday, a good (50%) chance of rain Thursday night,
• Cloudy and a bit warmer with a good (50%) chance of rain Friday, mostly cloudy with a (40%) chance of evening rain,  late a slight (20%) chance of rain at night,
• Cloudy and a bit warmer with a good (50%) chance of rain Saturday and in the evening, rain likely (70%)late Saturday night,
• Then mostly cloudy and a bit cooler with rain likely (70%) Sunday.
• highs 46-50 cooling to 48 Sunday lows 35-39. (seasonal averages high 49 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Sunny and a bit warmer today, mostly clear this evening, mostly cloudy late tonight,
• Mostly cloudy and a bit warmer Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer Wednesday,  then mostly cloudy Wednesday night.
• highs 44-50 lows 27-33.
• Cloudy and a bit warmer with a (30%) chance of rain Thursday, a good (50%) chance of rain and snow Thursday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Friday, a (30%) chance of rain at night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain Saturday and in the evening, rain likely (70%) Saturday night,
• Mostly cloudy with AM rain likely (70%), then rain and a bit cooler Sunday afternoon.
• highs 50-53 cooling back to 50 Sunday lows 38-36 warming to 42 Saturday night. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Widespread AM coastal frost, sunny and a bit warmer this afternoon, becoming mostly cloudy with widespread coastal frost late tonight,
• Widespread AM coastal frost, mostly cloudy and a bit warmer Tuesday afternoon and at night,
• Mostly cloudy and a bit warmer Wednesday, then a slight (20%) chance of rain Wednesday night.
• highs 48-53 lows 26-35.
• Mostly cloudy with a (30%) chance of rain and a bit warmer Thursday, rain likely (70%) Thursday night,
• Mostly cloudy with rain likely (70%) Friday, a good (50%) chance of rain at night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain Saturday, rain likely (70%) Saturday night,
• Then mostly cloudy and a bit cooler with rain Sunday.
• highs 54-56 cooling to 53 Sunday lows 39-42. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Sunny and a bit cooler today (-10 wind chill temperature possible in AM), partly cloudy this evening, mostly cloudy late tonight,
• A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy at night,
• A mix of clouds and sun and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• free air freezing level at the surface today and tonight, 5,000 ft. rising to 6,500 ft. Tuesday afternoon, 6,500 ft. falling to 6,000 ft. late Tuesday night, 7,500 ft. Wednesday, then 6,500 ft. Wednesday night.
• highs 32-43 lows 18-25 cooling to 23 Wednesday night.
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a bit cooler Thursday afternoon with a good (50%) chance of rain and snow, a good (50%) chance of rain Thursday night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, a bit cooler with a snow likely (70%) and a good (50%) chance of rain Friday afternoon, a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, and a bit warmer with a (40%) chance of rain and snow Saturday afternoon, a good (50%) chance of rain and snow Saturday night,
• Then mostly cloudy and a bit cooler with rain and snow likely (70%) Sunday.
• snow level 4,000 ft. Thursday through Friday night, 4,500 ft. Saturday, 5,000 ft. Saturday night, then  4,500 ft. Sunday.
• highs 40-35 warming back to 40 Saturday cooling back to 35 Sunday lows 27-24 warming to 28 Saturday night.

__________

Here is my weekly weather quiz question for the last time. What is “Instability“? Here is the correct answer. Instability (abbrev. INSTBY)- is the tendency for air parcels to accelerate when they are displaced from their original position; especially, the tendency to accelerate upward after being lifted. Instability is a prerequisite for severe weather – the greater the instability, the greater the potential for severe thunderstorms.

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast is sending much cooler air to the Pacific Northwest. A strong cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast (called a backdoor cold front) bringing colder air with it. It will take a while for temperatures to warm back up again.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 3 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.

________________

ADVISORIES:

• A FREEZE WARNING IS IN EFFECT FROM 7 PM TONIGHT UNTIL NOON MONDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND CHILL ADVISORY IS IN EFFECT UNTIL 11 AM MONDAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WIND CHILL ADVISORY IS IN EFFECT UNTIL 9 AM MONDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear and cooler tonight,
• Mostly sunny and a bit cooler Monday, partly cloudy in the evening, mostly cloudy late Monday night,
• Cloudy and a bit warmer Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• lows 19-29 highs 39-48.
• Cloudy and a bit cooler with a good (50%) chance of rain Thursday, a good (50%) chance of rain Thursday night,
• Cloudy and a bit warmer with a good (50%) chance of rain Friday, mostly cloudy with a (40%) chance of evening rain,  late a slight (20%) chance of rain at night,
• Cloudy and a bit warmer with a good (50%) chance of rain Saturday and in the evening, rain likely (70%)late Saturday night,
• Then mostly cloudy and a bit cooler with rain likely (70%) Sunday.
• highs 46-50 cooling to 48 Sunday lows 35-39. (seasonal averages high 49 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Clear tonight,
• Sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy late Monday night,
• Mostly cloudy and a bit warmer Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer Wednesday,  then mostly cloudy Wednesday night.
• lows 18-33 highs 44-50.
• Cloudy and a bit warmer with a (30%) chance of rain Thursday, a good (50%) chance of rain and snow Thursday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Friday, a (30%) chance of rain at night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain Saturday and in the evening, rain likely (70%) Saturday night,
• Mostly cloudy with AM rain likely (70%), then rain and a bit cooler Sunday afternoon.
• highs 50-53 cooling back to 50 Sunday lows 38-36 warming to 42 Saturday night. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Clear with widespread coastal frost tonight,
• Widespread AM coastal frost, sunny and a bit warmer Monday, becoming mostly cloudy with widespread coastal frost late Monday night,
• Widespread AM coastal frost, mostly cloudy and a bit warmer Tuesday afternoon and at night,
• Mostly cloudy and a bit warmer Wednesday, then a slight (20%) chance of rain Wednesday night.
• lows 22-35 highs 48-53.
• Mostly cloudy with a (30%) chance of rain and a bit warmer Thursday, rain likely (70%) Thursday night,
• Mostly cloudy with rain likely (70%) Friday, a good (50%) chance of rain at night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain Saturday, rain likely (70%) Saturday night,
• Then mostly cloudy and a bit cooler with rain Sunday.
• highs 54-56 cooling to 53 Sunday lows 39-42. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Clear and cold tonight (Wind: E 15-20 mph with evening gusts to 35 mph, -15 wind chill temperatures possible this evening),
• Sunny and a bit cooler Monday (-10 wind chill temperature possible in AM), partly cloudy in the evening, mostly cloudy Monday night,
• A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy at night,
• A mix of clouds and sun and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• free air freezing level at the surface tonight through Monday night, 5,000 ft. rising to 6,500 ft. Tuesday afternoon, 6,500 ft. falling to 6,000 ft. late Tuesday night, 7,500 ft. Wednesday, then 6,500 ft. Wednesday night.
• lows 7-25 cooling to 23 Wednesday night highs 32-43.
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a bit cooler Thursday afternoon with a good (50%) chance of rain and snow, a good (50%) chance of rain Thursday night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, a bit cooler with a snow likely (70%) and a good (50%) chance of rain Friday afternoon, a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, and a bit warmer with a (40%) chance of rain and snow Saturday afternoon, a good (50%) chance of rain and snow Saturday night,
• Then mostly cloudy and a bit cooler with rain and snow likely (70%) Sunday.
• snow level 4,000 ft. Thursday through Friday night, 4,500 ft. Saturday, 5,000 ft. Saturday night, then  4,500 ft. Sunday.
• highs 40-35 warming back to 40 Saturday cooling back to 35 Sunday lows 27-24 warming to 28 Saturday night.

__________

Here is my weekly weather quiz question for the last time. What is “Instability“? Here is the correct answer. Instability (abbrev. INSTBY)- is the tendency for air parcels to accelerate when they are displaced from their original position; especially, the tendency to accelerate upward after being lifted. Instability is a prerequisite for severe weather – the greater the instability, the greater the potential for severe thunderstorms.

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast is sending much cooler air to the Pacific Northwest. A weak frontal system moved in Friday but a stronger cold front www.wpc.ncep.noaa.gov  pushed through the Pacific Northwest from the northeast overnight bringing colder air with it.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

ADVISORIES:

• A FREEZE WATCH IS IN EFFECT FROM 4 AM UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST.
• A FREEZE WATCH IS IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM TODAY FOR CENTRAL OREGON.
• A WIND CHILL ADVISORY IS IN EFFECT UNTIL 11 AM MONDAY FOR THE NORTHERN OREGON CASCADES.
• A WIND CHILL ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 11 AM MONDAY FOR THE CASCADES IN LANE COUNTY.
• A WIND CHILL ADVISORY IS IN EFFECT FROM 5 PM TODAY UNTIL 9 AM MONDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Sunny and colder today, clear and cooler tonight,
• Mostly sunny and a bit warmer Monday, partly cloudy in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• highs 37-45 low 19-28.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday, a slight (20%) chance of rain and snow Wednesday night,
• Cloudy with a good (50%) chance of rain Thursday, and in the evening, rain likely (70%) late at night,
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, a good (50%) chance of evening rain, a slight (20%) chance of rain late Friday night,
• Then cloudy and a bit warmer with a good (50%) chance of rain Saturday.
• highs 48-50 lows 30-35. (seasonal averages high 49 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Sunny and cooler today, clear tonight,
• Sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night,
• highs 40-48 lows 19-30.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday afternoon and evening, a slight (20%) chance of rain and snow late Wednesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a (30%) chance of rain Thursday afternoon, evening rain likely (70%), rain and snow likely (70%) late at night,
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Friday afternoon, a (30%) chance of rain Friday night,
• Then mostly cloudy with a (30%) chance of rain Saturday.
• highs near 52 lows 33-40 cooling to 37 Friday night. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Widespread AM coastal frost, sunny and a bit cooler today, clear with widespread coastal frost tonight,
• Widespread AM coastal frost, sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• highs 42-49 lows 22-32.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday, a slight (20%) chance of rain Wednesday night,
• Mostly cloudy with a (30%) chance of AM rain, rain likely (70%) and a bit warmer Thursday and at night,
• Mostly cloudy with rain likely (70%) Friday, a (30%) chance of rain of rain Friday night,
• Then mostly cloudy with a (40%) chance of rain Saturday.
• highs 52-55 lows 35-39. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Mostly sunny and cooler today (-15 wind chill temperature possible in AM) and blustery (Wind: E 15-25 mph gusts to 40 mph), clear and cold tonight (-15 wind chill temperature possible),
• Sunny and warmer Monday (-10 wind chill temperature possible in AM), partly cloudy in the evening, mostly cloudy Monday night,
• A mix of clouds and sun and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• free air freezing level at the surface today through Monday, 4,000 ft. rising to 4,500 ft. Monday night, then 6,000 ft. Tuesday and Tuesday night.
• highs 16-39 lows 4-23.
• A mix of clouds and sun and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of rain and snow late Wednesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a bit cooler Thursday with a good (50%) chance of rain and snow Thursday night,
• Mostly cloudy and a bit cooler with a snow and rain likely (70%) Friday, a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Saturday.
• snow level 7,500 ft. Wednesday through Friday, then 4,500 ft. Friday night and Saturday.
• highs 42-36 warming to 39 Saturday lows 24-28 cooling back to 24 Friday night.

__________

Here is my weekly weather quiz question for the last time. What is “Instability“? Here is the correct answer. Instability (abbrev. INSTBY)- is the tendency for air parcels to accelerate when they are displaced from their original position; especially, the tendency to accelerate upward after being lifted. Instability is a prerequisite for severe weather – the greater the instability, the greater the potential for severe thunderstorms.

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast will be sending much cooler air to the Pacific Northwest. A weak frontal system moved in Friday but a stronger cold front www.wpc.ncep.noaa.gov  pushes through the Pacific Northwest from the northeast today and tonight bringing colder air with it.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 4 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

ADVISORIES:

• A FREEZE WATCH IS IN EFFECT FROM 4 AM UNTIL 9 AM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST.
• A FREEZE WATCH IS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR THE UPPER HOOD RIVER VALLEY AND THE CENTRAL COLUMBIA RIVER GORGE.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR CENTRAL OREGON.
• A WIND CHILL ADVISORY IS IN EFFECT FROM 8 PM TONIGHT UNTIL 11 AM MONDAY FOR THE NORTHERN OREGON CASCADES.
• A WIND CHILL ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 11 AM MONDAY FOR THE CASCADES IN LANE COUNTY.
• A WIND CHILL ADVISORY IS IN EFFECT FROM 5 PM SUNDAY UNTIL 9 AM MONDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Cloudy with evening rain likely (70%) and isolated snow showers (0.10 in. of rain possible, snow level 1,500 ft., little or no snow accumulation expected), partly cloudy late tonight,
• Sunny and a colder Sunday, clear and cooler Sunday night,
• Mostly sunny and a bit warmer Monday, partly cloudy in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• low 24-19 warming to 28 Tuesday night highs 37-45.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday, a slight (20%) chance of rain and snow Wednesday night,
• Cloudy with a good (50%) chance of rain Thursday, and in the evening, rain likely (70%) late at night,
• Mostly cloudy and a bit warmer with rain likely (70%) Friday, a good (50%) chance of evening rain, a slight (20%) chance of rain late Friday night,
• Then cloudy and a bit warmer with a good (50%) chance of rain Saturday.
• highs 48-50 lows 30-35. (seasonal averages high 49 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with a good (50%) chance of evening rain and snow, rain and snow likely (70%) late tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 2,000 ft. falling to the surface late tonight),
• Sunny and cooler Sunday, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night,
• lows 26-19 warming to 30 Tuesday night highs 40-48.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday afternoon and evening, a slight (20%) chance of rain and snow late Wednesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a (30%) chance of rain Thursday afternoon, evening rain likely (70%), rain and snow likely (70%) late at night,
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Friday afternoon, a (30%) chance of rain Friday night,
• Then mostly cloudy with a (30%) chance of rain Saturday.
• highs near 52 lows 33-40 cooling to 37 Friday night. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a (40%) chance of evening coastal rain with clearing and widespread coastal frost late tonight while mostly cloudy with a good (50%) chance of inland evening rain and inland snow and rain likely (70%) late tonight (0.10 in. of rain possible, snow level at the surface late tonight, no snow accumulation expected),
• Widespread AM coastal frost, sunny and a bit cooler Sunday, clear with widespread coastal frost Sunday night,
• Widespread AM coastal frost, sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy late at night,
• Mostly cloudy and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• lows 32-22 warming back to 32 Tuesday night highs 42-49.
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday, a slight (20%) chance of rain Wednesday night,
• Mostly cloudy with a (30%) chance of AM rain, rain likely (70%) and a bit warmer Thursday and at night,
• Mostly cloudy with rain likely (70%) Friday, a (30%) chance of rain of rain Friday night,
• Then mostly cloudy with a (40%) chance of rain Saturday.
• highs 52-55 lows 35-39. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Cloudy with evening snow likely (70%) partly cloudy with scattered snow showers and colder late tonight (-10 wind chill temperature possible),
• Mostly sunny and cooler Sunday (-15 wind chill temperature possible in AM), clear and cold Sunday night (-15 wind chill temperature possible),
• Sunny and warmer Monday (-10 wind chill temperature possible in AM), partly cloudy in the evening, mostly cloudy Monday night.
• snow level 1,500 ft. this evening, free air freezing level at the surface Sunday through Monday, 4,000 ft. rising to 4,500 ft. Monday night, then 6,000 ft. Tuesday and Tuesday night.
• A mix of clouds and sun and a bit warmer Tuesday, then mostly cloudy Tuesday night.
• lows 8-4 warming to 23 Tuesday night highs 16-39.
• A mix of clouds and sun and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of rain and snow late Wednesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a bit cooler Thursday with a good (50%) chance of rain and snow Thursday night,
• Mostly cloudy and a bit cooler with a snow and rain likely (70%) Friday, a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Friday night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Saturday.
• snow level 7,500 ft. Wednesday through Friday, then 4,500 ft. Friday night and Saturday.
• highs 42-36 warming to 39 Saturday lows 24-28 cooling back to 24 Friday night.

__________

Here is my weekly weather quiz question for the last time. What is “Instability“? Here is the correct answer. Instability (abbrev. INSTBY)- is the tendency for air parcels to accelerate when they are displaced from their original position; especially, the tendency to accelerate upward after being lifted. Instability is a prerequisite for severe weather – the greater the instability, the greater the potential for severe thunderstorms.

_________________

A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast will be sending much cooler air to the Pacific Northwest. A weak frontal system moved in Friday but a stronger cold front www.wpc.ncep.noaa.gov will push through the Pacific Northwest from the northeast today and tonight bringing colder air with it.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 32 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

ADVISORIES:

• A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST.
• A FREEZE WATCH IS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a slight (20%) chance of AM rain, a bit cooler with rain likely (70%) this afternoon and evening (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of snow late tonight (under 0.10 in. of rain possible),
• Sunny and a bit cooler Sunday, clear Sunday night,
• AM clouds and sun, sunny and a bit warmer Monday afternoon, partly cloudy in the evening, then mostly cloudy at night.
• highs 44-37 warming to 38 Monday low 25-19 warming to 23 Monday night.
• Mostly cloudy and a bit warmer Tuesday, a slight (20%) chance of rain late Tuesday night (snow level 500 ft.),
• Mostly cloudy with a slight (20%) chance of AM snow, mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday (snow level 500 ft.), a slight (20%) chance of rain at night,
• Cloudy with a (40%) chance of rain and a bit warmer Thursday, mostly cloudy with a good (50%) chance of rain Thursday night ,
• Then cloudy with a good (50%) chance of rain Friday.
• highs 43-48 lows 27-34. (seasonal averages high 49 low 35)

__________

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

__________

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy and a bit cooler with a (30%) chance of rain today, a (30%) chance of rain and snow tonight (under 0.10 in. of rain possible, snow level 2,000 ft. falling to 100 ft. late at night),
• Sunny and a bit cooler Sunday, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear in the evening, then mostly cloudy late Monday night.
• highs 46-39 warming to 43 Monday lows 30-19 warming to 25 Monday night.
• Partly cloudy and a bit warmer Tuesday and Tuesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, a bit warmer with a slight (20%) chance of showers Wednesday afternoon, a slight (20%) chance of rain and snow at night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a (30%) chance of rain Thursday afternoon, a (40%) chance of rain Thursday night,
• Then mostly cloudy with a (40%) chance of rain Friday.
• highs 48-52 lows 30-36. (seasonal averages high 51 low 37)

___________

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of AM coastal rain with coastal rain likely (70%) this afternoon while a (30%) chance of inland rain today (under 0.10 in. of rain possible), a (40%) chance of coastal rain tonight while a good (50%) chance of inland evening rain and a good (50%) chance of inland rain and snow late tonight (0.10 in. of rain possible),,
• Sunny and a bit cooler Sunday, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear in the evening, then mostly cloudy Monday night.
• highs 49-43 warming to 46 Monday lows 30-23 warming to 28 Monday night.
• Mostly cloudy and a bit warmer Tuesday, a slight (20%) chance of showers late Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of rain at night,
• Mostly cloudy with a (30%) chance of rain and a bit warmer Thursday, a good (50%) chance of rain Thursday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Friday.
• highs 52-54 cooling back to 52 Friday lows 32-38. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of AM snow, snow and a bit cooler this afternoon (1 in. of snow possible), evening snow, a slight (20%) chance of snow and colder late tonight,
• Mostly sunny and cooler Sunday, clear Sunday night,
• Mostly sunny and warmer Monday, mostly clear in the evening, then mostly cloudy Monday night.
• snow level 2,500 ft. today, at the surface tonight, free air freezing level at the surface Sunday through Monday night.
• highs 29-18 warming to 30 Monday lows 10-4 warming to 14 Monday night.
• Mostly cloudy and a bit warmer Tuesday, mostly cloudy Tuesday night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance  of snow Wednesday and a slight (20%) chance of afternoon rain, a slight (20%) chance of rain and snow at night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a bit cooler Thursday, a (40%) chance of rain and snow Thursday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain and snow Friday.
• free air freezing level at the surface Tuesday, 4,000 ft. Tuesday night, snow level 3,000 ft. Wednesday, then 4,000 ft. Wednesday night through Friday.
• highs 36-42 cooling to 38 Friday lows 20-25.

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Here is my weekly weather quiz question. What is “Instability“?

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A very strong Jet Stream flow www.wunderground.com/maps/wind/jet-stream  from the northeast will be sending much cooler air to the Pacific Northwest. A weak frontal system moved in today but a stronger cold front www.wpc.ncep.noaa.gov will push through the Pacific Northwest from the northeast Saturday bringing colder air with it.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 5 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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ADVISORIES:

• NONE AT THIS TIME.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a (40%) chance of showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM showers, a bit cooler with showers likely (70%) Saturday afternoon and evening (under 0.10 in. of rain possible),  just partly cloudy late Saturday night,
• Sunny and a bit cooler Sunday, clear at night,
• Mostly sunny and a bit warmer Monday, then partly cloudy Monday night.
• low 37-19 warming to 23 Monday night highs 44-37 warming to 38 Monday.
• A mix of clouds  and sun and a bit warmer Tuesday, more clouds and becoming mostly cloudy with a slight (20%) chance of rain and snow late Tuesday night (snow level 1,000 ft.),
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Wednesday (snow level 500 ft.) and at night,
• Cloudy with a (40%) chance of rain and a bit warmer Thursday, then mostly cloudy with a (40%) chance of rain Thursday night and Friday.
• highs 43-48 lows 27-34. (seasonal averages high 49 low 35)

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Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with a slight (20%) chance of rain late tonight (snow level 2,500 ft.),
• Mostly cloudy and a bit cooler with a (30%) chance of rain Saturday, a (30%) chance of rain and snow Saturday night (under 0.10 in. of rain possible, snow level 2,000 ft. falling to 100 ft. late at night),
• Sunny and a bit cooler Sunday, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear in the evening, then mostly cloudy late Monday night.
• lows 36-19 warming to 25 Monday night highs 46-39 warming to 43 Monday.
• Partly cloudy and a bit warmer Tuesday and Tuesday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, a bit warmer with a slight (20%) chance of showers Wednesday afternoon, a slight (20%) chance of rain and snow at night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, a (30%) chance of rain Thursday afternoon, a (40%) chance of rain Thursday night,
• Then mostly cloudy with a (40%) chance of rain Friday.
• highs 48-52 lows 30-36. (seasonal averages high 51 low 37)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM coastal rain with coastal rain likely (70%) Saturday afternoon while a (30%) chance of inland rain Saturday (under 0.10 in. of rain possible), a (40%) chance of coastal rain at night while a good (50%) chance of inland evening rain and a good (50%) chance of inland rain and snow late Saturday night (0.10 in. of rain possible),,
• Sunny and a bit cooler Sunday, clear Sunday night,
• Sunny and a bit warmer Monday, mostly clear in the evening, then mostly cloudy Monday night.
• lows 39-23 warming to 28 Monday night highs 49-43 warming to 46 Monday.
• Mostly cloudy and a bit warmer Tuesday, a slight (20%) chance of showers late Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Wednesday, mostly cloudy with a slight (20%) chance of rain at night,
• Mostly cloudy with a (30%) chance of rain and a bit warmer Thursday, a good (50%) chance of rain Thursday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Friday.
• highs 52-54 cooling back to 52 Friday lows 32-38. (seasonal averages high 54 low 41)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of showers tonight (under 0.10 in. of rain possible, 1 in. of snow possible),
• Mostly cloudy with showers and a bit cooler Saturday (2 in. of snow possible), evening snow showers, a slight (20%) chance of snow showers and colder late Saturday night,
• Mostly sunny and cooler Sunday, mostly clear at night,
• Sunny and warmer Monday, then partly cloudy Monday night.
• snow level 3,000 ft. tonight, 2,500 ft. Saturday, at the surface Saturday night, free air freezing level at the surface Sunday and Monday, then 2,500 ft. Monday night,
• lows 24-4 warming to 14 Monday night highs 29-18 warming to 30 Monday.
• A mix of clouds and sun and a bit warmer Tuesday, partly cloudy Tuesday night,
• A mix of clouds and sun and a bit warmer Wednesday,becoming mostly cloudy late at night,
• Mostly cloudy with a (30%) chance of rain or snow and a bit cooler Thursday, a (40%) chance of rain or snow Thursday night,
• Then mostly cloudy with a (40%) chance of rain or snow Friday.
• free air freezing level 4,000 ft. Tuesday, 5,500 ft. Tuesday night, 7,000 ft. Wednesday, 7,000 ft. rising to 8,000 ft. Wednesday night, snow level 4,000 ft. Thursday, 3,500 ft. Thursday night, then 2,500 ft. Friday.
• highs 36-42 cooling to 38 Friday lows 20-25.

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