Here is my weekly weather quiz question. What is a “Hodograph“?   The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs. Good luck.

_________________

An Upper Level High Pressure Ridge (Shaded “Arch” shape with arrows) is still controlling our weather with northwest airflow, but a disturbance tries to slip through. The graphics for days 1-3 show a frontal system moving through the Pacific Northwest today. The graphics for days 3-7  show a frontal system just offshore Thursday that will push through Oregon next Friday.

Note: The Leonid Meteor Shower peaks this weekend. Best viewing out in the country away from the city lights.

________________

Air Quality Index:

Eugene/Springfield: The Air Quality Index is 83 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 92 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 58 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

Advisories:

• AN AIR STAGNATION ADVISORY IS IN EFFECT FROM 7 AM SUNDAY UNTIL 1 PM NEXT WEDNESDAY FOR THE EASTERN COLUMBIA RIVER GORGE, THE LOWER COLUMBIA BASIN OF OREGON, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM TUESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, THEN WESTERN, CENTRAL AND EASTERN LAKE COUNTY.

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

• Mostly cloudy with patchy fog this AM, sunny and a bit warmer in the afternoon, just clear Saturday night,
• Mostly sunny and a bit cooler Sunday and Monday, mostly clear both nights.
• highs 57-55 low 32-34.
• A mix of clouds and sun and a bit cooler Tuesday, becoming mostly cloudy with a (40%) chance of rain Tuesday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, rain likely (70%) Wednesday night,
• Mostly cloudy with rain likely (70%) Thursday (Thanksgiving Day) and at night,
• Then rain likely (70%) Friday.
• highs near 52 lows 38-40. (seasonal averages high 52 low 38)

_____

Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: YELLOW– Caution is Advised.

Oakridge: YELLOW– Caution is Advised.

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

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

_____

Your College Football Forecast    

Today:

Ducks vs Arizona State at  Autzen Stadium – Kickoff: 7:30 PM- PST – Mostly clear 54, cooling as the game progresses.

Beavers vs Washington at Husky Stadium, Seattle, Washington – Kickoff: 1:30 PM- PST  – Sunny 52, cooling as the game progresses.

_________________

Forecast for Roseburg:

• Partly cloudy this AM, sunny and warmer this afternoon, clear tonight,
• Patchy AM fog, sunny and hazy and a bit cooler Sunday and Monday, clear and hazy both nights,
• highs 60-58 lows near 38.
• AM haze, partly cloudy Tuesday, becoming mostly cloudy with a slight (20%) of rain Tuesday night,
• Mostly cloudy and slightly cooler with a good (50%) chance of rain Wednesday and at night,
• Mostly cloudy and a bit cooler with rain likely (70%) Thursday (Thanksgiving Day) and Thursday night,
• Then rain and a bit cooler Friday.
• highs 58-50 lows near 44. (seasonal averages high 53 low 40)

_____________________

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

• Sunny and slightly warmer today, clear tonight,
• Sunny Sunday with inland haze, mostly clear with coastal haze late at night while inland haze Sunday night,
• Mostly sunny Monday, mostly clear Monday night,
• highs near 62-60 lows 45-42.
• Mostly cloudy and a bit cooler Tuesday, mostly cloudy with a (40%) chance of rain Tuesday night,
• Mostly cloudy with rain likely (70%) and cooler Wednesday and at night,
• Mostly cloudy with rain and a bit cooler Thursday (Thanksgiving Day) and Thursday night,
• Then mostly cloudy with rain Friday.
• highs 58-55 lows near 48. (seasonal averages high 55 low 43)

________________

Forecast for the Cascades in Lane County:

• Mostly sunny and a bit cooler today, clear tonight,
• Mostly sunny and a bit warmer Sunday, clear Sunday night,
• Mostly sunny Monday, then mostly clear at night.
• free air freezing level 11,000 ft. today and tonight, 12,000 ft. Sunday, 11,000 ft. Sunday night, then 10,000 ft. Monday and Monday night.
• highs 46-50 lows 29-32.
• A mix of clouds and sun and a bit cooler Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• Mostly cloudy with a (40%) chance of rain or snow and a bit cooler Wednesday, rain or snow likely (70%) Wednesday night,
• Rain or snow likely (70%) and a bit cooler Thursday (Thanksgiving Day) and at night,
• Then rain or snow and a bit cooler Friday.
• free air freezing level 9,000 ft. Tuesday, snow level 6,000 ft. Tuesday night, 5,500 ft. Wednesday, 5,000 ft. Wednesday night, 4,500 ft. Thursday, 5,000 ft. Thursday night, then 5,000 ft. Friday.
• highs 48-36 lows 32-30.

________________