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:

• Mostly cloudy with areas of fog this AM, partly cloudy and a bit cooler in the afternoon and evening, mostly cloudy with areas of fog late tonight 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.
• highs 47-54 lows 32-43.
• 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:

• Mostly cloudy with patchy fog and freezing fog this  AM, just mostly sunny and a bit warmer this afternoon, partly cloudy with patchy fog late tonight,
• 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.
• highs 54-60 lows 37-45.
• 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:

• Mostly cloudy with patchy AM fog, mostly sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy with patchy fog late tonight 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.
• highs 55-59 lows 42-53.
• 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:

• Mostly sunny and a bit warmer today, partly cloudy tonight,
• 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 7,000 ft. rising to 9,000 ft. this afternoon, 9,000 ft. tonight and Monday, 11,00o ft. Monday night, 9,000 ft. Tuesday, then  snow level above 8,000 ft. Tuesday night.
• highs near 42 lows 20-33.
• 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,
• Rain and snow showers likely (70%) Friday and 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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