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 7 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 FRIDAY NIGHT 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 scattered showers with a slight (20%) chance of thunderstorms this evening, small hail possible, a good (50%) chance of showers late tonight (0.10 in. of rain possible, more in storms),
• A good (50%) chance of showers Friday AM, mostly cloudy  with showers likely (70%) Friday afternoon (0.10 in. of rain possible), a slight (20%) chance of evening showers, just mostly cloudy with patchy fog late Friday night (under 0.10 in. of rain possible),
• Patchy AM fog, a mix of clouds and sun and a bit warmer Saturday afternoon, partly cloudy with patchy fog at night and Sunday AM,  a mostly sunny and a bit warmer Sunday afternoon (Easter), then becoming mostly cloudy with a slight (20%) chance of showers Sunday night.
• lows 40-37 warming to 42 Sunday night highs 53-62.
• Mostly cloudy and a bit cooler with showers likely (70%) Monday and Tuesday, showers Monday night, cloudy with a (40%) chance of showers Tuesday night,
• Mostly cloudy with showers Wednesday and Wednesday night,
• Then cloudy with a good (50%) chance of showers Thursday.
• highs 5near 57 lows 46-40 warming to 43 Wednesday night. (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 scattered evening showers likely (70%), rain and snow showers likely (70%) late tonight (under 0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft. late tonight),
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, rain and showers likely (70%) and a bit cooler 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, partly cloudy in the evening, mostly clear late at night,
• Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain Sunday afternoon (Easter), then becoming cloudy with a (30%) chance of showers Sunday night.
• lows 39-34 warming back to 39 Saturday night warming to 43 Sunday night highs 53-62 cooling to 60 Sunday.
• Mostly cloudy with showers likely (70%) Monday, showers at night,
• Mostly cloudy with showers likely (70%) Tuesday, cloudy with a slight (20%) chance of showers Tuesday night,
• Then showers likely (70%) Wednesday through Thursday (a bit cooler).
• highs 59-56 lows 45-53. (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 increasing showers  tonight (0.25 in. of rain possible),
• Mostly cloudy with AM coastal showers and showers likely (70%) and a bit cooler Friday afternoon while inland showers likely (70%) Friday (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late at night,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday afternoon and evening, becoming mostly clear late at night,
• Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain Sunday afternoon (Easter), then mostly cloudy with a (30%) chance of showers Sunday night.
• lows 43-39 warming to 47 Sunday night highs 52-58.
• Mostly cloudy with showers Monday and at night,
• Cloudy with showers likely (70%) Tuesday, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with showers Wednesday, then showers likely (70%) Wednesday night and Thursday (a bit cooler).
• highs 57-55 lows 48-45. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Mostly cloudy and a bit cooler with snow showers likely (70%) Friday, a good (50%) chance of evening rain and snow showers, a slight (20%) chance of snow showers late Friday night,
• Partly cloudy and a bit warmer Saturday, becoming mostly cloudy in the evening, partly cloudy late at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance rain and snow showers Sunday afternoon (Easter), then increasing clouds to mostly cloudy with a (40%) chance of rain and snow showers Sunday night.
• snow level 3,500 ft. tonight, 3,000 ft. Friday and Friday night, free air freezing level 4,000 ft. Saturday, 6,000 ft. Saturday night, snow level 5,500 ft. Sunday, then 6,500 ft. Sunday night.
• lows 26-20 warming to 30 Saturday night and Sunday night highs 37-45 cooling to 43 Sunday.
• Mostly cloudy with rain and snow showers likely (70%) a Monday through Tuesday, cloudy with a good (50%) 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 5,000 ft. Monday, 5,500 ft. Monday night, 5,000 ft. Tuesday and Tuesday night, then 4,000 ft. Wednesday,
• highs 44-42 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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