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 into the Pacific Northwest from the Southwest. The graphic for days 3-7 shows a break from frontal storms until between Sunday 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 15 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 WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT ABOVE 5,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• 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 showers and a slight (20%) chance of thunderstorms this evening, a good (50%) chance of showers late tonight (0.25 in. of rain possible, more in storms),
• Mostly cloudy with AM showers likely (70%), showers and a bit cooler with a slight (20%) chance of thunderstorms Thursday afternoon (0.25 in. of rain possible, more in storms) showers likely (70%) at night (0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with showers Friday, a good (50%) 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.
• lows 42-36 warming to 38 Saturday night highs 54-52 warming to 58 Saturday.
• A mix of clouds and sun with a slight (20%) chance of AM showers, a (30%) chance of showers and a bit warmer Sunday afternoon (Easter), mostly cloudy with a good (50%) chance of showers Sunday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Monday and at night,
• Then mostly cloudy with showers likely (70%) Tuesday through Wednesday.
• highs 59-57 lows 43-46 cooling back to 43 Tuesday 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 evening rain, scattered showers late tonight (0.25 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late tonight),
• Mostly cloudy with AM rain and snow showers, showers and a bit cooler Thursday afternoon (0.25 in. of rain possible, snow level 3,000 ft.), cloudy with evening showers likely (70%), a good (50%) chance of rain and snow showers late Thursday night (under 0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft. at night),
• A good (50%) chance of AM rain and snow showers, rain and showers likely (70%) and a bit warmer Friday afternoon (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.
• lows 42-34 warming to 40 Saturday night highs 53-59.
• Mostly cloudy and a bit warmer with a (40%) chance of showers Sunday (Easter), showers Sunday night,
• Mostly cloudy with showers likely (70%) Monday, showers at night,
• Showers likely (70%) Tuesday and Tuesday night,
• Then cloudy and a bit cooler with a (40%) chance of showers Wednesday.
• highs 59-57 lows near 45. (seasonal averages high 61 low 41)

 

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

• Mostly cloudy with evening coastal rain and a slight (20%) chance of thunderstorms with coastal showers and a slight (20%) chance of thunderstorms late tonight while evening inland rain inland showers late tonight (0.25 in. of rain possible),
• Mostly cloudy with showers and a bit cooler Thursday (0.25 in. of rain possible) and at night,
• Mostly cloudy with AM coastal showers while inland AM showers likely (70%), a good (50%) of showers and a bit warmer Friday afternoon, a slight (20%) chance of evening showers, just mostly cloudy at night,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday, then partly cloudy at night.
• lows 44-37 warming to 42 highs 52-57.
• Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday (Easter), showers Sunday night,
• Then showers Monday through 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 tonight (0.25 in. of rain possible, 1-4 in. of snow possible),
• Rain and snow showers and a bit cooler Thursday (0.25 in. of rain possible, 1-3 in. of snow possible) and at night (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, just mostly cloudy late Friday night,
• Then partly cloudy and a bit warmer Saturday and at night.
• snow level 5,000 ft. falling to 3,500 ft. late tonight, 3,500 ft. Thursday, 3,000 ft. Thursday night through Friday night, free air freezing level 4,500 ft. Saturday, then 6,500 ft. Saturday night.
• lows 28-22 warming to 30 Saturday night highs 39-36 warming to 45 Saturday.
• A mix of clouds and sun and a bit cooler with a good (50%) chance rain and snow showers Sunday (Easter), cloudy with a rain and snow showers likely (70%) Sunday night,
• Mostly cloudy with rain and snow showers likely (70%) and a bit cooler Monday through 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, 4,500 ft. Tuesday, 5,000 ft. Tuesday night, then 4,000 ft. Wednesday.
• highs 44-40 lows 32-30.

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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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