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 Low Pressure Trough (Shaded “U” shape with blue arrows) is losing control over our weather and High Pressure (Shaded “Arch” shape with blue arrows) starts to take over to dry us out and return the 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 on Wednesday through next Saturday. 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 51 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 9 in the Good 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 PUDDING RIVER NEAR AURORA AND THE TUALATIN RIVER AT FARMINGTON,  AND THE COQUILLE RIVER AT COQUILLE.
• 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 with patchy fog this evening, mostly cloudy with areas of fog late tonight and Sunday AM, partly cloudy and a bit cooler in the afternoon and evening, mostly cloudy with areas of fog late Sunday night and Monday AM, partly cloudy in the afternoon and evening, then mostly cloudy with patchy fog late Monday night,
• Mostly cloudy with patchy AM fog, mostly cloudy and a bit warmer Tuesday, then a (30%) chance of rain Tuesday night.
• lows 30-43 highs 47-54.
• Mostly cloudy and a bit warmer with rain likely (70%) Wednesday, rain at night,
• Rain likely (70%) and a bit cooler Thursday and Thursday night,
• Cloudy and a bit cooler with a good (50%) chance of showers Friday and Friday night,
• Then mostly cloudy with a (40%) chance of showers Saturday.
• highs 57-50 lows 45-37. (seasonal averages high 51 low 35)

 

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Forecast for Roseburg:

• Partly cloudy tonight, mostly cloudy with patchy fog and freezing fog late tonight and Sunday AM, just mostly sunny and a bit warmer in the afternoon, partly cloudy with patchy fog late Sunday night,
• Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Monday afternoon, mostly cloudy with a slight (20%) chance of rain late at night,
• Mostly cloudy and a bit warmer Tuesday with a slight (20%) chance of afternoon rain, then mostly cloudy with a (40%) chance of rain Tuesday night.
• lows 34-45 highs 54-60.
• Cloudy and a bit warmer with a good (50%) chance of rain Wednesday, rain at night,
• Rain likely (70%) and a bit cooler Thursday and Thursday night,
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Friday and at night,
• Mostly cloudy with a (40%) chance of AM rain and snow showers Saturday, then a (40%) chance of showers in the afternoon.
• highs 62-54 lows 47-40. (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 with patchy fog late tonight,
• Mostly cloudy with patchy AM fog, mostly sunny and a bit warmer Sunday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Sunday night and Monday AM, partly cloudy and a bit warmer Monday afternoon, mostly cloudy with a slight (20%) chance of rain late Monday night,
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Tuesday, then mostly cloudy with a good (50%) chance of rain Tuesday night.
• lows 38-53 highs 55-59.
• Mostly cloudy with rain likely (70%) and a bit warmer Wednesday, rain at night and Thursday (a bit cooler), rain likely (70%) Thursday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, cloudy with a good (50%) chance of showers at night,
• Then mostly cloudy with a (40%) chance of showers Saturday.
• highs 62-55 lows 49-43. (seasonal averages high 53 low 40)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• Mostly sunny and a bit warmer Sunday, partly cloudy Sunday night,
• AM sun, then partly cloudy Monday and at night,
• A mix of clouds and sun Tuesday, then partly cloudy with a slight (20%) chance of rain Tuesday night.
• free air freezing level 5,500 ft. rising to 6,000 ft. late tonight, 7,000 ft. rising to 9,000 ft. Sunday afternoon, 9,000 ft. Sunday night and Monday, 11,00o ft. Monday night, 9,000 ft. Tuesday, then  snow level above 8,000 ft. Tuesday night.
• lows 19-33 highs near 42.
• Cloudy and a bit warmer with a good (50%) chance of rain Wednesday, rain at night and Thursday (a bit cooler), rain and snow likely (70%) Thursday night and Friday (a bit cooler), cloudy with a good (50%) chance of rain and snow showers Friday night,
• Then mostly cloudy (a bit cooler) with a (40%) chance of rain and snow showers Saturday.
• free air freezing level above 8,000 ft. Wednesday and Wednesday night, 6,000 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday and Friday night, then 3,000 ft. Saturday.
• highs 44-35 lows 34-23.

 

 

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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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