Here is my weekly weather quiz question. What is “ Astronomical Dawn?”   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) returns the clouds and chances for rain through week. The graphic for days 3-7 shows more frontal systems to bring us more rain Thursday through 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 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 16 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 cloudy with rain this evening, showers late tonight (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, just partly cloudy at night,
• A slight (20%) chance of rain Wednesday AM, a mix of clouds and sun and a bit warmer with a good (50%) chance of rain in the afternoon, evening rain likely (70%), showers likely (70%) Wednesday night.
• Mostly cloudy and a bit cooler with showers likely (70%) and a slight (20%) chance of thunderstorms Thursday, then just mostly cloudy at night.
• lows 44-40 warming back to 44 Thursday night highs 62-60.
• Partly cloudy and a bit warmer Friday and at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Saturday, partly cloudy with a slight (20%) chance of showers Saturday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of rain at night,
• Then mostly cloudy with a (40%) chance of rain Monday.
• highs 56-68 cooling to 62 Saturday and  Sunday lows 39-44 cooling to 42 Saturday night. (seasonal averages high 61 low 40)

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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:

• Cloudy with a good (50%) chance of showers this AM, rain likely (70%) and a bit cooler this afternoon and evening (under 0.10 in. of rain possible), rain late tonight (0.25 in. of rain possible),
• Mostly cloudy and a bit warmer with a (30%) chance of showers Tuesday, becoming mostly clear at night,
• Mostly cloudy and a bit warmer with showers likely (70%) Wednesday and in the evening, then just mostly cloudy late Wednesday night.
• highs 60-63 lows 47-44 warming back to 47 Wednesday night.
• Mostly cloudy and a bit cooler with showers likely (70%) Thursday, just mostly cloudy Thursday night,
• Partly cloudy and warmer Friday and at night,
• Mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday, partly cloudy Saturday night,
• Then sunny Sunday.
• highs 60-70 cooling to 68 Saturday and Sunday lows 40-47 cooling to 42 Saturday night. (seasonal averages high 63 low 42)

 

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

• A good (50%) chance of AM showers, rain this afternoon (0.10 in. of rain possible), evening rain likely (70%), rain late tonight (0.25 in. of rain possible),
• Mostly cloudy and a bit warmer with a (30%) chance of showers Tuesday (0.10 in. of rain possible), mostly clear in the evening at the shore and partly cloudy with a slight (20%) chance of rain late at night while mostly clear inland Tuesday night,
• Mostly cloudy with a (40%) chance of rain Wednesday, evening rain likely (70%), then rain late at night.
• highs near 58 lows 49-47.
• Mostly cloudy and a bit cooler with showers likely (70%) Thursday, just partly cloudy Thursday night through Friday night (a bit warmer Friday),
• Mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday, partly cloudy at night,
• Then sunny and a bit warmer Sunday.
• highs 58-63 cooling back to 58 Saturday warming to 64 Sunday lows 43-48 cooling back to 43 Saturday night. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a (40%) chance of AM rain and snow showers, rain and snow and a bit cooler this afternoon (0.25 in. of rain possible, now snow accumulation expected), rain tonight (0.25 in. of rain possible),
• AM rain and snow, mostly cloudy with rain and snow showers likely (70%) Tuesday afternoon, just partly cloudy Tuesday night,
• A mix of clouds and sun and a bit warmer with a (30%) chance of rain and a slight (20%) chance of snow Wednesday afternoon, then rain and snow at night.
• snow level 5,000 ft. today, 6,000 ft. tonight, 5,500 ft. Tuesday, free air freezing level 6,500 ft. Tuesday night, snow level 5,000 ft. Wednesday, then 5,500 ft. Wednesday night.
• highs 45-47 lows 34-30 warming to 32 Wednesday night.
• Mostly cloudy with rain and snow showers and a bit cooler Thursday, a slight (20%) chance of rain and snow showers Thursday night,
• Mostly sunny and a bit warmer Friday, partly cloudy at night,
• Partly cloudy with a slight (20%) chance of rain Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night,
• Partly cloudy with a slight (20%) chance of rain Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night,
• Then partly cloudy and a bit warmer Sunday.
• snow level 4,500 ft. Thursday, 5,000 ft. Thursday night, free air freezing level 7,000 ft. Friday, 9,000 ft. Friday night, snow level 7,500 ft. Saturday, 6,500 ft. at night, then free air freezing level 7,500 ft. Sunday.
• highs 42-52 cooling to 48 Saturday and Sunday lows 26-32.

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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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