Here is my weekly weather quiz question for the last time. What is the “Aleutian Low?” Here is the correct answer. The Aleutian Low is a semi-permanent, subpolar area of low pressure located in the Gulf of Alaska near the Aleutian Islands. It is a generating area for storms and migratory lows often reach maximum instensity in this area. It is most active during the late fall to late spring. During the summer, it is weaker, retreating towards the North Pole and becoming almost nonexistent. During this time, the North Pacific High pressure system dominates. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer at the bottom of this page. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper level High Pressure Ridge (Shaded “Arch” shape with blue arrows) takes over to dry us out and keep us in sunshine. The graphic for days 1-3 shows no surface frontal systems moving into the Pacific Northwest. The graphic for days 3-7 shows the next fronts to approach us Thursday through next Sunday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 61 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 56 in the Moderate category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

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)

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Advisories:

• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• FLOOD WARNINGS ARE IN EFFECT FOR THE TUALATIN RIVER AT FARMINGTON.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

 

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

• Partly cloudy this evening, mostly cloudy with areas of fog late tonight and Monday AM, partly cloudy in the afternoon and evening, mostly cloudy with patchy fog late Monday night,
• Patchy AM fog, partly cloudy and a bit warmer Tuesday, a good (50%) chance of rain late Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with rain Wednesday and at night.
• lows 30-45 highs 48-56.
• Mostly cloudy with rain likely (70%) and a bit cooler Thursday, cloudy with a good (50%) chance of rain Thursday night,
• Cloudy and a bit cooler with a (30%) chance of showers Friday and at night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Saturday, a (40%) chance of showers Saturday night,
• Then mostly cloudy with a good (50%) chance of showers Sunday.
• highs 53-50 lows near 38. (seasonal averages high 51 low 35)

 

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Forecast for Roseburg:

• Partly cloudy with patchy fog late tonight,
• Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Monday afternoon, mostly cloudy at night and Tuesday, a (30%) chance of rain Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy with rain likely (70%) Wednesday, then rain at night.
• lows 36-46 highs 56-59.
• Mostly cloudy with rain likely (70%) and a bit cooler Thursday, cloudy with a slight (20%) chance of showers Thursday night,
• Cloudy with a slight (20%) chance of rain and snow showers and a bit cooler Friday, a (30%) chance of showers at night,
• Mostly cloudy with a (40%) chance of AM rain and snow showers Saturday, a (40%) chance of showers in the afternoon, a slight (20%) chance of evening showers, a slight (20%) chance of rain and snow late Saturday night and Sunday AM, then a (40%) chance of rain in the Sunday afternoon.
• highs 57-54 lows 40-38. (seasonal averages high 53 low 37)

 

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

• Partly cloudy this evening, mostly cloudy with patchy fog late tonight and Monday AM, partly cloudy and a bit warmer Monday afternoon, just mostly cloudy at night,
• Mostly cloudy Tuesday with a slight (20%) chance of coastal rain and a bit warmer in the afternoon, mostly cloudy with a (40%) chance of rain Tuesday night (0.10 in. of rain possible),
• Then mostly cloudy with rain and a bit cooler Wednesday and Wednesday night.
• lows 42-52 cooling to 49 Wednesday night highs 55-59.
• Mostly cloudy with rain Thursday and a bit cooler, cloudy with a slight (20%) chance of showers Thursday and at night,
• Cloudy and a bit cooler with a slight (20%) chance of showers Friday, a good (50%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers Saturday, a slight (20%) chance of evening showers, a slight (20%) chance of rain late at night,
• Then mostly cloudy with a (40%) chance of rain Sunday.
• highs 56-54 lows 49-40. (seasonal averages high 53 low 40)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• Mostly sunny Monday, partly cloudy at night,
• Partly cloudy and a bit warmer Tuesday, and in the evening, mostly cloudy with a slight (20%) chance of rain late Tuesday nigh,
• Cloudy and a bit cooler with rain likely (70%) Wednesday, then rain at night.
• free air freezing level 9,000 ft. tonight, 9,000 ft. rising to 10,000 ft. Monday afternoon, 10,00o ft. falling to 9,000 ft. late Monday night, 8,000 ft. rising to 10,000 ft. Tuesday, then snow level above 8,000 ft. Tuesday night through Wednesday night.
• lows 22-33 highs 44-42.
• Cloudy and a bit cooler with rain and snow Thursday, cloudy with a good (50%) chance of rain and snow Thursday night,
• A slight (20%) chance of rain and and snow showers Friday and a bit cooler, a (40%) chance of rain and snow showers at night,
• Mostly cloudy and a bit cooler with a (40%) chance of rain and snow showers Saturday, then mostly cloudy with a good (50%) chance of rain and snow showers Saturday night and Sunday (a bit cooler).
• Snow level 5,500 ft. Thursday, 3,500 ft. Thursday night and Friday, 4,000 ft. Friday night, 3,500 ft. Saturday, 4,000 ft. Saturday night, then 3,500 ft. Sunday.
• highs 39-35 lows near 25.

 

 

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

 

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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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