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 Low Pressure Trough (Shaded “U” shape with blue arrows) has moved in. Then high pressure should give us a mostly dry Easter weekend. The graphic for days 1-3 shows the frontal system that moved through the Pacific Northwest. The graphic for days 3-7 shows a break from frontal storms until between Sunday night and Monday. 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 5 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 6 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 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 sun breaks and showers and a bit cooler with a slight (20%) chance of thunderstorms this afternoon and evening (0.10 in. of rain possible, more in storms), a good (50%) chance of showers late tonight (0.10 in. of rain possible) and Friday AM, mostly cloudy and a bit cooler with showers Friday afternoon, a slight (20%) chance of evening showers, just mostly cloudy with patchy fog late Friday night,
• Patchy AM fog, partly cloudy and a bit warmer Saturday afternoon and at night.
• highs 53-58 lows 40-36 warming to 38 Saturday night.
• Patchy AM fog, a mix of clouds and sun and a bit warmer Sunday afternoon (Easter), becoming mostly cloudy with a slight (20%) chance of showers Sunday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Monday, showers at night,
• Then mostly cloudy with showers likely (70%) Tuesday and Wednesday, cloudy with a (40%) chance of showers Tuesday night.
• highs 59-56 lows near 44. (seasonal averages high 60 low 39)

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. Moderate (58)

Last Counted: 4/11/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with showers and a bit cooler this afternoon (0.25 in. of rain possible, snow level 3,000 ft.), evening showers likely (70%), a good (50%) chance of rain and snow showers late tonight (under 0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft. at night),
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, rain and showers likely (70%) and a bit warmer Friday afternoon (under 0.10 in. of rain possible, snow level 2,500 ft. rising to 3,000 ft. in the afternoon), mostly cloudy with a slight (20%) chance of evening showers,  just mostly cloudy Friday night,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday afternoon, then partly cloudy at night.
• highs 53-62 lows 36-30 warming to 38 Saturday night.
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Sunday (Easter), becoming cloudy with a (30%) chance of showers Sunday night,
• Mostly cloudy with showers likely (70%) Monday, showers at night,
• Then cloudy with a (40%) chance of showers Tuesday through Wednesday.
• highs 59-57 lows near 45. (seasonal averages high 62 low 42)

 

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

• Mostly cloudy with showers and a bit cooler this afternoon (0.25 in. of rain possible), coastal showers  tonight while evening inland showers and inland showers likely late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM coastal showers while showers likely (70%) and a bit warmer Friday afternoon (0.10 in. of rain possible), a slight (20%) chance of evening coastal showers and just mostly cloudy late at night while mostly cloudy inland at night,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday afternoon, partly cloudy in the evening, becoming mostly clear late at night.
• highs 52-59 lows 40-37 warming to 42 Saturday night.
• Mostly cloudy and a bit cooler with a (30%) chance of showers Sunday (Easter), cloudy with a (30%) chance of showers Sunday night,
• Showers likely (70%) Monday, showers at night,
• Cloudy with a good (50%) chance of showers Tuesday and Tuesday night.
• Then cloudy with showers likely (70%) Wednesday.
• highs near 56 lows near 48. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• mostly cloudy with rain and snow showers and a bit cooler this afternoon (0.25 in. of rain possible, 2 in. of snow possible) and tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with snow showers Friday, a (40%) chance of evening rain and snow showers, just mostly cloudy late Friday night,
• Then partly cloudy and a bit warmer Saturday and at night.
• snow level 3,500 ft. today, 3,000 ft. tonight through Friday night, free air freezing level 4,500 ft. Saturday, then 6,500 ft. Saturday night.
• highs 38-45 lows 25-20 warming to 30 Saturday night.
• A mix of clouds and sun and a bit cooler with a slight (50%) chance rain and snow showers Sunday (Easter), increasing clouds to cloudy with a good (50%) chance of rain and snow showers Sunday night,
• Mostly cloudy with rain and snow showers likely (70%) and a bit cooler Monday, rain and snow showers at night,
• Mostly cloudy with rain and snow showers likely (70%) Tuesday and Tuesday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Wednesday.
•  snow level 5,500 ft. Sunday and Sunday night, 5,000 ft. Monday, 5,500 ft. Monday night, 5,000 ft. Tuesday and Tuesday night, then 4,000 ft. Wednesday.
• highs 44-40 lows near 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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