Here is my weekly weather quiz question. What is  an“ Ashfall Advisory?” 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.

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An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) is taking over for a very short time through early today, then another Upper Level Low (Shaded “U” shape with blue arrows) moves in. The graphic for days 1-3 shows the next frontal system that’s moving into the Pacific Northwest. The graphic for days 3-7 shows the next complex frontal system that will be moving into Oregon next weekend. 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 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 10 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: 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)

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Advisories:

• A HIGH WIND WATCH IS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING FOR CENTRAL AND EASTERN LAKE COUNTY.
• 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 and frost this AM,  mostly cloudy and a bit warmer with a good (50%) chance of rain this afternoon (under 0.10 in. of rain possible), rain tonight (0.25 in. of rain possible),
• Rain and breezy (Wind: S 15-25 mph) Wednesday, evening rain likely (70%), then showers likely (70%) late Wednesday night,
• Mostly cloudy with showers and a bit cooler Thursday, then cloudy with a good (50%) chance of showers at night.
• highs 57-55 lows 44-38.
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, a slight (20%) chance of showers Friday night,
• A mix of clouds and sun and a bit warmer Saturday, partly cloudy at night,
• A mix of clouds and sun and a bit cooler Sunday, becoming mostly cloudy with a good (50%) chance of rain Sunday night,
• Then mostly cloudy with showers likely (70%) Monday.
• highs 54-60 cooling to 58 Sunday lows 37-42. (seasonal averages high 60 low 39)

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. High (160)

Last Counted: 4/4/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of AM rain, rain likely (70%) and a bit warmer this afternoon (under 0.10 in. of rain possible), cloudy with evening rain, a (40%) chance of rain late tonight (0.25 in. of rain possible),
• A good (50%) chance of rain Wednesday AM, rain and a bit warmer in the afternoon, cloudy with evening rain likely (70%), a good (50%) chance of rain late Wednesday night,
• Mostly cloudy with AM rain and snow showers, showers and a bit cooler Thursday afternoon, evening showers likely (70%), then rain and snow showers late Thursday night.
• highs 56-60 lows 47-39.
• AM rain and snow showers, showers and a bit warmer Friday afternoon, mostly cloudy with a slight (20%) chance of showers Friday night,
• Just mostly cloudy and a bit warmer Saturday and at night,
• Mostly cloudy with a slight (20%) chance of rain Sunday, a (40%) chance of showers Sunday night,
• Then mostly cloudy with showers Monday.
• highs 56-62 cooling to 58 Monday lows 38-52. (seasonal averages high 61 low 41)

 

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

• Cloudy with a good (50%) chance of AM rain, rain and a bit warmer this afternoon (0.10 in. of rain possible), evening coastal rain while inland evening rain and rain likely (70%) late tonight and breezy (Wind: NE 5-shifting and increasing to SE 15-25 mph gusts to 40 mph),
• Mostly cloudy with AM coastal rain and a slight (20%) chance of  thunderstorms while AM inland rain likely (7o%) and rain and a bit cooler inland Wednesday afternoon and breezy (Wind: S 15-25 mph AM gusts to 40 mph), evening rain likely (70%), a good (50%) chance of rain late Wednesday night,
• Mostly cloudy with showers and a bit cooler Thursday and Thursday night.
• highs 56-52 lows 48-42.
• Mostly cloudy with showers Friday, just mostly cloudy at night through Saturday night,
• Cloudy with a (40%) chance of showers and a bit warmer Friday, a slight (20%) chance of showers Friday night and Saturday (a bit warmer), just mostly cloudy at night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of rain Sunday, a (40%) chance of showers Sunday night,
• Then mostly cloudy with showers Monday.
• highs 56-60 cooling to 55 Monday lows 42-45. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy and a bit warmer today with afternoon rain and snow likely (70%) and a bit warmer (under 0.10 in. of rain possible), cloudy with evening rain and snow likely (70%), rain and snow likely (70%) late tonight (0.10 in. of rain possible, 1 in. of snow possible) and breezy (Wind: E 5-10 mph increasing and shifting S 10-20 mph gusts to 30 mph late at night),
• Mostly cloudy with rain and snow and a bit warmer Wednesday and breezy (Wind: S 15-25 mph gusts to 35 mph decreasing to S 10-15 mph gusts to 25 mph in the afternoon), evening rain and snow, rain and snow showers late at night and Thursday and a bit cooler, then rain and snow showers likely (70%) Thursday night.
• snow level 5,000 ft. today, 5,500 ft. tonight and Wednesday, 4,000 ft. Wednesday night, then 3,500 ft. Thursday and Thursday night.
• highs 43-45 cooling to 40 Thursday lows 33-24.
• Cloudy with a good (50%) chance of snow showers Friday, mostly cloudy with a slight (20%) chance of rain and snow showers Friday night,
• A mix of clouds and sun and a bit warmer Saturday, partly cloudy at night,
• Mostly cloudy and a bit cooler Sunday, mostly cloudy with a good (50%) chance of rain and snow Sunday night,
• Then rain and snow showers Monday.
• snow level 2,500 ft. Friday, 3,000 ft. Friday night, free air freezing level 4,500 ft. Saturday, 6,500 ft. Saturday night and Sunday, snow level 5,500 ft. Sunday night, then 5,000 ft. Monday.
• highs 39-48 cooling to 45 Sunday lows 24-30.

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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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