Here is my weekly weather quiz question for the last time. What is  an“ Ashfall Advisory?”  Here is the correct answer. An Ashfall Advisory is an advisory issued for conditions associated with airborne ash plume resulting in ongoing deposition at the surface. Ashfall may originate directly from a volcanic eruption, or indirectly by wind suspending the ash. I’ll have a new weekly weather quiz question for you starting Monday. 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 Air High Pressure Ridge (Shaded “Arch” shape with blue arrows) has taken over giving us bright sunshine for today and slowly decreasing amounts of sunshine as your Sunday progresses. An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) returns the clouds and chances for rain late Sunday into next week. The graphic for days 1-3 shows no frontal systems. The graphic for days 3-7 shows more frontal systems to bring back moisture Tuesday and again Saturday of next week. 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 20 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 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:

• 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 clear with patchy fog late tonight and Sunday AM, slowly increasing clouds to mostly cloudy and a bit warmer with a slight (20%) chance of showers by late Sunday afternoon (Easter), evening showers likely (70%), a good (50%) chance of showers late at night (0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM rain, a good (50%) of rain and a bit cooler Monday afternoon (0.10 in. of rain possible), rain likely (70%) Monday night (0.25 in. of rain possible),
• AM showers likely (70%), a mix of clouds and sun and a bit warmer with a good (50%) chance of showers Tuesday afternoon, then just partly cloudy Tuesday night.
• lows 38-46 cooling to 42 Tuesday night highs 62-58 warming back to 62 Tuesday.
• A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Wednesday, rain likely (70%) Wednesday night,
• Mostly cloudy with a good (50%) chance of showers Thursday, partly cloudy with a slight (20%) chance of showers at night,
• Partly cloudy and a bit warmer Friday and Friday night,
• Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday.
• highs 57-66 cooling to 62 Saturday lows 44-38 warming back to 44 Friday night. (seasonal averages high 61 low 39)

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Eugene-Springfield Pollen Count:

Grass………. Low (2)

Trees………. Moderate (15)

Last Counted: 4/12/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly clear late tonight,
• Increasing clouds to mostly cloudy with a (40%) chance of rain (under 0.10 in. of rain possible) and a bit warmer Sunday afternoon (Easter), evening showers likely (60%), a good (50%) chance of showers Sunday night (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of rain Monday AM, rain and a bit cooler in the afternoon (under 0.10 in. of rain possible), evening rain likely (70%), rain late at night (0.25 in. of rain possible),
• Mostly cloudy with AM showers likely (70%), partly cloudy and a bit warmer with a good (50%) chance of showers Tuesday afternoon, then becoming mostly clear at night.
• lows 42-48 cooling to 44 Tuesday night highs 64-62.
• Mostly cloudy and a bit cooler with showers likely (70%) Wednesday through Thursday, a slight (20%) chance of showers Thursday night,
• Partly cloudy and warmer Friday and Friday night,
• Then mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday.
• highs 60-58 warming to 69 Friday cooling to 64 Saturday lows 45-40 warming back to 45 Friday night. (seasonal averages high 62 low 42)

 

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

• Mostly clear late tonight,
• Increasing clouds to mostly cloudy and a bit warmer with a (40%) chance of rain (under 0.10 in. of rain possible) Sunday (Easter), a good (50%) chance of showers at night (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM rain, rain Monday afternoon (0.10 in. of rain possible), evening rain likely (70%), rain late at night (0.25 in. of rain possible),
• AM showers likely (70%), partly cloudy with a slight (20%) chance of showers Tuesday afternoon, mostly clear in the evening, then partly cloudy Tuesday night.
• lows 45-50 cooling back to 45 Tuesday night highs near 58.
• Mostly cloudy and a bit cooler with showers likely (70%) Wednesday through Thursday, just mostly cloudy Thursday night,
• Partly cloudy and warmer Friday and at night,
• Then mostly cloudy with a (40%) chance of showers and a bit cooler Saturday.
• highs 57-64 cooling back to 57 Saturday lows 47-43. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow showers Sunday afternoon (Easter), evening rain or snow showers, a good (50%) chance of rain and snow showers Sunday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, rain and snow likely (70%) and a bit cooler Monday afternoon, rain likely (70%) at night,
• AM rain and snow showers, a mix of clouds and sun with a good (50%) chance of rain and snow showers Tuesday afternoon, then just partly cloudy Tuesday night.
• free air freezing level 6,500 ft. tonight, snow level 5,500 ft. Sunday through Monday, 6,000 ft. Monday night, then 5,500 ft. Tuesday, then free air freezing level 6,500 ft. Tuesday night.
• lows 30-33 cooling back to 30 Tuesday night highs 48-44.
• Partly cloudy and a bit warmer with a (40%) chance of rain and snow showers Wednesday, rain and snow showers likely (70%) at night and Thursday (a bit cooler), partly cloudy with a slight (20%) chance of rain and snow showers Thursday night,
• Then just partly cloudy and a bit warmer Friday through Saturday.
• snow level 5,000 ft. Wednesday and Wednesday night, 4,500 ft. Thursday, 5,000 ft. Thursday night, free air freezing level 6,500 ft. Friday, then 9,000 ft. Friday night and Saturday.
• highs 45-40 warming to 50 Friday lows 32-26 warming back to 32 Friday night.

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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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