Here is my weekly weather quiz question. What is the “ Automated Surface Observing System (ASOS)?” 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 High Pressure Ridge (Shaded “Arch” shape with blue arrows) took over and will keep warming us up for a while. The graphics for days 1-3 shows the next warm front that is  approaching the Pacific Northwest. The cold front will follow between Wednesday night and Thursday. The graphics for days 3-7 show more fronts that will push into our area one Saturday and one approaching between next Tuesday and Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 30 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:

• Cloudy with AM rain likely (70%), mostly cloudy with a (40%) chance of rain and a bit warmer this afternoon and evening (0.10 in. of rain possible), a (30%) chance of evening rain, a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible),
• Partly cloudy  in the AM, mostly sunny and warmer Wednesday afternoon, clear at night,
• Partly cloudy with a slight (20%) chance of showers Thursday afternoon, a good (50%) chance of showers and a slight (20%) chance of thunderstorms in the evening, then mostly cloudy with a good (50%) chance of showers Thursday night.
• highs 63-80 cooling to 78 Thursday lows 52-54.
• Mostly cloudy with a good (50%) chance of showers and much cooler Friday, a (40%) chance of showers at night,
• Partly cloudy with a (30%) chance of showers Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night,
• A mix of clouds and sun and a bit warmer Sunday, then partly cloudy Sunday night and Monday.
• highs 59-65 lows 45-42. (seasonal averages high 64 low 41)

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Eugene-Springfield Pollen Count:

Grass………. Low (3)

Trees………. High (428)

Last Counted: 4/27/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Cloudy with a (30%) chance of showers and a bit warmer today (under 0.10 in. of rain possible), mostly cloudy a with a slight (20%) of evening showers, partly cloudy late tonight,
• Sunny and warmer Wednesday, mostly clear Wednesday night,
• Mostly cloudy and a bit cooler with a (30%) chance of thunderstorms Thursday and at night.
• highs 72-87 cooling to 84 Thursday lows 52-56.
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Friday, a (40%) chance of showers at night,
• Mostly cloudy and a bit cooler with a (30%) chance of showers Saturday, a slight (20%) chance of showers Saturday night,
• Just mostly cloudy and warmer Sunday, then partly cloudy and a bit warmer Sunday night and Monday.
• highs 68-57 warming to 67 Monday lows 46-43. (seasonal averages high 67 low 45)

 

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

• Cloudy with a (30%) chance of showers and a bit warmer today (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening coastal showers, just partly cloudy tonight,
• Sunny and warmer Wednesday, mostly clear at night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Thursday afternoon and at night.
• highs 62-70 cooling to 66 Thursday lows 52-47.
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Friday, a (30%) chance of showers Friday night and Saturday, just mostly cloudy Saturday night,
• Partly cloudy and a bit warmer Sunday and Sunday night,
• Then sunny Monday.
• highs 58-54 warming to 60 Sunday and Monday lows near 46. (seasonal averages high 57 low 45)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with AM rain likely (70%), a bit warmer with a good (50%) chance of rain this afternoon, a slight (20%) chance of evening rain, just mostly cloudy late tonight,
• Mostly sunny and warmer Wednesday, mostly clear at night,
• A slight (20%) chance of AM showers, a mix of clouds and sun with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Thursday afternoon, mostly cloudy with a showers likely (70%) and a slight (20%) chance of thunderstorms in the evening, showers likely (70%) late Thursday night.
• snow level above 8,000 ft. this afternoon and tonight, free air freezing level 12,000 ft. Wednesday, 12,000 ft. rising to 13,000 ft. Wednesday night, 13,000 ft. Wednesday night, then snow level above 8,000 ft. Thursday and Thursday night.
• highs 52-72 lows 40-45.
• Mostly cloudy with showers likely (70%) and much cooler Friday, a good (50%) chance of showers Friday night,
• A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit cooler Saturday, mostly cloudy with a (40%) chance of rain and snow showers at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow showers Sunday, then partly cloudy Sunday night and Monday.
• snow level above 8,000 ft. Friday, 6,000 ft. Friday night, 4,000 ft. Saturday, 5,000 ft. Saturday night and Sunday, free air freezing level 9,000 ft. Sunday night, then 11,000 ft. Monday.
• highs 52-44 warming to 53 Monday lows near 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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