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 10 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 3 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:

• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers and thunderstorms this afternoon (0.10 in. of rain possible, more in storms), just partly cloudy tonight,
• A slight (20%) chance of rain Wednesday AM, mostly cloudy with possible sun peeks and a bit warmer with rain likely (70%) in the afternoon (under 0.10 in. of rain possible), evening rain, showers late Wednesday night (0.10 in. of rain possible).
• Mostly cloudy and a bit cooler with showers likely (70%) and a slight (20%) chance of thunderstorms Thursday, then just partly cloudy at night.
• highs 62-57 lows 40-44 cooling back to 40 Thursday night.
• Partly cloudy and a bit warmer Friday and at night,
• Mostly cloudy with possible sun peeks and a bit cooler with a (40%) chance of rain Saturday, mostly cloudy with a (30%) 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 and a bit warmer with a (40%) chance of rain Monday.
• highs 69-62 lows 45-43. (seasonal averages high 61 low 40)

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. Moderate (87)

Last Counted: 4/15/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Partly cloudy and a bit warmer with a good (50%) chance of showers this afternoon (0.10 in. of rain possible), becoming mostly clear tonight,
• Mostly cloudy with a slight (20%) chance of AM rain, rain and a bit cooler Wednesday afternoon (under 0.10 in. of rain possible), evening showers, showers likely (70%) late Wednesday night (0.10 in. of rain possible),
• Mostly cloudy with showers likely (70%) Thursday AM, a bit cooler with a good (50%) chance of afternoon showers, partly cloudy in the evening, then just mostly cloudy late Thursday night.
• highs 63-59 lows 42-46 cooling to 38 Thursday night.
• Patchy AM fog, partly cloudy and a bit warmer Friday and at night,
• Mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night and Sunday, partly cloudy Sunday night,
• Then mostly cloudy and a bit cooler with a (30%) chance of rain Monday.
• highs 70-60 lows 44-42. (seasonal averages high 63 low 42)

 

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

• Partly cloudy with a bit warmer with a slight (20%) chance of showers this afternoon (0.10 in. of rain possible), mostly clear this evening, mostly cloudy late tonight,
• A (40%) chance of of AM rain Wednesday, rain in the afternoon, evening showers, showers with and a slight (20%) chance of isolated thunderstorms late Wednesday night (0.10 in. of rain possible).
• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers and a bit cooler Thursday afternoon, then mostly cloudy late Thursday night.
• highs 59-56 lows 48-43.
• Patchy AM fog, mostly cloudy and a bit warmer Friday, just partly cloudy Friday night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Saturday, partly cloudy at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers and a bit cooler Sunday, mostly cloudy Sunday night,
• Then mostly cloudy and a bit cooler with a (30%) chance of rain Monday.
• highs 66-57 lows near 45. (seasonal averages high 55 low 43)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain and snow showers and a bit warmer this afternoon (0.25 in. of rain possible, 1 in. of snow possible), just partly cloudy tonight and Wednesday AM, mostly cloudy and a bit warmer with a good (50%) chance of rain and snow in the afternoon, evening rain and snow, rain and snow showers late at night,
• Mostly cloudy with rain and snow showers and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of evening rain and snow showers, then partly cloudy with a slight (20%) chance of rain and snow showers late Thursday night.
• snow level 5,000 ft. today, free air freezing level 7,000 ft. falling to 6,500 ft. late tonight, snow level 5,000 ft. Wednesday and Wednesday night, then 4,000 ft. Thursday, then 4,500 ft. Thursday night.
• highs 46-44 lows 28-32 cooling to 26 Thursday night.
• Partly cloudy and a bit warmer Friday and Friday night,
• A mix of clouds and sun with a slight (20%) chance of rain Saturday, partly cloudy with a slight (20%) chance of rain Saturday night,
• A mix of clouds and sun with a slight (30%) chance of rain Saturday, mostly cloudy with a (30%) chance of showers Saturday night,
• Partly cloudy and a bit cooler Sunday with a slight (20%) chance of showers, a slight (20%) chance of rain at night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain Monday.
•  free air freezing level 6,000 ft. Friday, 10,000 ft. Friday night, snow level 7,500 ft. Saturday, 6,500 ft. Saturday night, 6,000 ft. Sunday, then 6,000 ft. Sunday night and Monday.
• highs 52-50 warming back to 52 Monday lows 33-30.

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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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