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

_________________

An Upper Level High Pressure Ridge  (“Arch” shape) is slowly warming up the Pacific Northwest. Frontal activity returned today, but not of the bitter cold airflow nature. The graphics for days 1-3 show our the frontal system moving in. The graphics for days 3-7 show more frontal activity moving our way Monday through Friday.

________________

Air Quality Index:

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

Oakridge: The Air Quality Index is 44 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)

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

________________

ADVISORIES:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SUNDAY UNTIL 4 PM MONDAY ABOVE 3,500 FT. FOR THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SUNDAY UNTIL 4 AM MONDAY ABOVE 3,500 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON, THE EAST SLOPES OF THE OREGON CASCADES, AND THE NORTHWEST BLUE MOUNTAINS.

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

• Mostly cloudy with a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
• Cloudy with a good (50%) chance of AM rain, mostly cloudy with rain likely (70%) and slightly warmer Saturday afternoon, rain Saturday night (0.25 in. of rain possible),
• Mostly cloudy with showers and cooler Sunday, a good (50%) chance of showers late Sunday night,
• Mostly cloudy with a slight (20%) chance of showers Monday and in the evening, then a (40%) chance of rain late Monday night.
• lows 42-35 highs 56-48.
• Mostly cloudy and a bit warmer with a good (50%) chance of rain Tuesday and Tuesday night,
• Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with a good (50%) chance of showers Wednesday afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late at night,
• Mostly cloudy with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of showers Thursday night,
• Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Friday.
• highs 52-47 lows 37-30. (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 with a (30%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain Saturday, evening rain, showers late Saturday night (under 0.10 in. of rain possible, snow level 3,500 ft. late at night),
• Mostly cloudy with showers and a bit cooler Sunday (snow level 3,500 ft.), evening rain and snow showers likely (70%), a slight (20%) chance of rain and snow showers late Sunday night (snow level 3,000 ft. falling to 2,500 ft. late at night),
• Mostly cloudy with a slight (20%) chance of AM showers, just mostly cloudy and a bit warmer Monday afternoon, then mostly cloudy with a slight (20%) chance of rain late Monday night.
• lows 42-36 highs 55-49 warming to 52 Monday night.
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Tuesday, a (30%) chance of showers late Tuesday night,
• Mostly cloudy with a (40%) showers and a bit cooler Wednesday afternoon, a slight (20%) chance of evening showers, just mostly cloudy late Wednesday night,
• Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
• Then just mostly cloudy and a bit warmer Friday.
• highs 55-49 warming to 53 Friday lows 39-34. (seasonal averages high 52 low 37)

___________

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

• Mostly cloudy with a (30%) chance of rain tonight (under 0.10 in. of rain possible) and breezy (Wind: S 10-20 mph),
• Mostly cloudy with a slight (20%) chance of AM rain, rain and a bit warmer Saturday afternoon and evening, showers late Saturday night (0.25 in. of rain possible),
• Mostly cloudy and cooler with showers Sunday, a good (50%) chance of coastal showers at night while evening inland showers likely (70%) and a slight (20%) chance  of inland showers late at night,
• Mostly cloudy with a slight (20%) chance of AM showers, just mostly cloudy and a bit warmer Monday afternoon, then a slight (20%) of rain late Monday night.
• lows 43-38 highs 60-52 warming to 54 Monday.
• Mostly cloudy and a bit warmer with a (30%) chance of rain Tuesday, a good (50%) chance of showers Tuesday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of evening showers,  just mostly cloudy late at night,
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Then mostly cloudy Friday.
• highs 55-52 warming to 54 Friday lows 38-34 warming to 36 Thursday  night. (seasonal averages high 54 low 41)

__________

Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain or snow tonight (0.25 in. of rain possible, 2 in. of snow possible),
• Mostly cloudy with a good (50%) chance of AM rain and snow, slightly warmer with rain and snow Saturday  afternoon (0.10 in. of rain possible, 1 in. of snow possible), rain and snow Saturday night (0.25 in. of rain possible, 1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with showers and snow showers Sunday (snow may be heavy at times in the afternoon with blowing snow), evening snow and rain showers (snow possibly heavy at times, patchy blowing snow), a good (50%) chance of snow showers late at night,
• Mostly cloudy with a good (50%) chance of AM snow showers, mostly cloudy and a bit warmer Monday afternoon and evening, then partly cloudy with a (40%) chance of snow and rain Monday night.
• snow level 4,000 ft. tonight, 4,000 ft. rising to 5,000 ft. Saturday afternoon, 4,500 ft. Saturday night, 3,500 ft. Sunday, 2,500 ft. Sunday night,  3,000 ft. Monday, then 3,500 ft. Monday night.
• lows 28-23 highs 39-32 warming to 34 Monday.
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain or snow Tuesday, a good (50%) chance of rain and snow Tuesday night,
• Mostly cloudy with a good (50%) chance of AM snow and rain, a bit cooler with a good (50%) chance of snow and rain showers Wednesday afternoon, a slight (20%) chance of evening showers, a slight (20%) chance of snow showers late Wednesday night,
• Partly cloudy and a bit warmer with a slight (20%) chance of snow showers Thursday and again late Thursday night,
• Then a mix of clouds and sun and a bit warmer with a slight (20%) chance of snow and rain showers Friday.
• snow level 4,000 ft. Tuesday and Tuesday night, 3,000 ft. Wednesday through Thursday night, then 3,500 ft. Friday.
• highs 42-34 warming to 37 Friday lows 26-19.

__________