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 an Upper Air High Pressure Ridge (Shaded “Arch” shape with blue arrows) should take over giving 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 6 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 1 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 FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• 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 showers likely (70%) and possible sun breaks this afternoon (0.10 in. of rain possible, small hail possible), a slight (20%) chance of evening showers, partly cloudy with patchy fog late tonight (under 0.10 in. of rain possible),
• Patchy AM fog, a mix of clouds and sun and a bit warmer Saturday afternoon, partly cloudy n the evening, clear with patchy fog late at night and Sunday AM, mostly sunny and a bit warmer Sunday afternoon (Easter), becoming mostly cloudy in the evening, then partly cloudy with a slight (20%) chance of showers late Sunday night.
• highs 52-62 lows 38-43.
• Mostly cloudy and a bit cooler with rain likely (70%) Monday, rain at night,
• Mostly cloudy with showers likely (70%) Tuesday and Wednesday,  a slight (20%) chance of showers Tuesday night, showers likely (70%) Wednesday night,
• Then cloudy with a good (50%) chance of showers Thursday.
• highs near 57 lows 46-42. (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 a good (50%) chance of rain and showers and a bit cooler this afternoon (under 0.10 in. of rain possible, snow level 2,500 ft.), mostly cloudy with a slight (20%) chance of evening showers,  just mostly cloudy late tonight,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday afternoon, partly cloudy in the evening, mostly clear late at night,
• Mostly cloudy with a slight (20%) chance of rain Sunday afternoon (Easter), then becoming cloudy with a (40%) chance of showers Sunday night.
• highs 53-62 lows 33-44.
• Mostly cloudy with a (40%) of showers Monday, a good (50%) chance of evening rain, rain likely (70%) Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday, just partly cloudy Tuesday night,
• Mostly cloudy with a (40%) Wednesday, rain likely (70%) at night,
• Then mostly cloudy and a bit cooler with a (30%) chance of showers Thursday.
• highs near 58 lows near 44. (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 and a bit cooler with a good (50%) chance of coastal showers this afternoon while a (30%) chance of inland showers, mostly cloudy with a slight (20%) chance of coastal showers tonight while slight (20%) chance of evening inland showers and just mostly cloudy late tonight inland,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday afternoon, partly cloudy in the evening, becoming mostly clear late at night,
• Partly cloudy at the shore in the AM and mostly cloudy with a slight (20%) chance of  rain Sunday afternoon (Easter) while mostly cloudy with a slight (20%) chance of inland showers Sunday afternoon, then cloudy with a (30%) chance of showers at night.
• highs 52-58 lows 39-47.
• Mostly cloudy with a (40%) chance of AM showers, showers likely (70%) Monday, cloudy with a good (50%) chance of evening rain, rain likely (70%) at night,
• Cloudy with a slight (20%) chance of showers Tuesday, just partly cloudy Tuesday night,
• Mostly cloudy with a good (50%) chance of rain Wednesday, cloudy with a good (50%) chance of rain Wednesday night,
• Then mostly cloudy and a bit cooler with a (30%) chance of showers Thursday.
• highs near 56 lows 48-44. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy and a bit cooler with rain and snow showers likely (70%) this afternoon (0.10 in. of rain possible, 2 in. of snow possible), a good (50%) chance of evening rain and snow showers, just mostly cloudy late tonight (under 0.10 in. of rain possible),
• 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 afternoon (Easter), then increasing clouds to mostly cloudy with a (40%) chance of showers Sunday night.
• snow level 3,000 ft. today and tonight, free air freezing level 4,500 ft. Saturday, 7,000 ft. Saturday night and Sunday, then snow level 6,000 ft. Sunday night.
• highs 36-45 cooling to 43 Sunday lows 20-30.
• Mostly cloudy with rain and snow  likely (70%) Monday and at night,
• Mostly cloudy with rain and snow showers likely (70%) Tuesday, a slight (20%) chance of rain and snow showers Tuesday night,
• Mostly cloudy with a rain and snow showers likely (70%) Wednesday and Wednesday night,
• Then cloudy with a good (50%) chance of rain and snow showers Thursday.
•  snow level 5,500 ft. Monday and Monday night, 5,000 ft. Tuesday and Tuesday night, 4,500 ft. Wednesday, 5,000 ft. Wednesday night, then 4,000 ft. Thursday.
• highs 44-38 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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