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Check out my latest Eugene Daily News Weather Or Not Column They Don’t Always Obey The Rules.

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And don’t forget my latest feature story in the continuing series on service club organizations called This Moose Isn’t Named Bullwinkle.

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And my feature article about Contractors Electric called Is The Ground Wire The White One Or The Black One?

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Here is my weekly weather quiz question. What is a “temperature inversion?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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An upper level low pressure trough has been controlling our weather and will continue to do so for a while longer even though it is weakening. Another upper level low will follow however continuing the chance of rain that we need so much.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 19 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 18 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A HEALTH ADVISORY HAS BEEN CANCELLED FOR DETROIT LAKE LOCATED 46 MILES SOUTHEAST OF SALEM ON THE NORTH SANTIAM RIVER IN LINN AND MARION COUNTIES. WATER MONITORING ON MAY 18, 2015 HAS CONFIRMED THE TOXIN CONCENTRATIONS HAVE DROPPED TO A SAFE LEVEL.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with scattered showers and areas of drizzle ending, just mostly cloudy this afternoon, becoming partly cloudy tonight,
• Cloudy with a slight (20%) chance of drizzle Saturday AM, a mix of clouds and sun in the afternoon, partly cloudy in the evening, mostly cloudy late Saturday night and Sunday AM, a mix of clouds and sun in the afternoon, then partly cloudy Sunday night.
• highs 66-73 lows 49-47.
• Partly cloudy Monday (Memorial Day) through Thursday.
• highs 74-72 warming to 76 Wednesday, cooling to 73 Thursday  lows near 48. (seasonal averages high 68 low 44)
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Eugene-Springfield Pollen Count

Trees: Moderate- 36

Grass: High- 28

Reading as of: 5/22/15

Data courtesy of Oregon Allergy Associates.

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Forecast for the Umpqua Basin including Roseburg:

• Cloudy with a slight (20%) chance of showers this afternoon, mostly cloudy this evening, just partly cloudy late tonight through Saturday evening, mostly cloudy late Saturday night, and Sunday AM, partly cloudy in the afternoon and Sunday night.
• highs 68-76 lows 48-52.
• Partly cloudy Monday (Memorial Day) through Tuesday night,
• Mostly cloudy Wednesday through Thursday AM, then partly cloudy Thursday afternoon.
• highs 79-76 lows 48-44. (seasonal averages high 71 low 48)
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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy this afternoon, partly cloudy tonight through Saturday evening, mostly cloudy Saturday night,
• Mostly cloudy Sunday, then partly cloudy Sunday night.
• highs near 58 lows 52-49 warming back to 52 Sunday night.
• Partly cloudy Monday (Memorial Day) and Monday night,
• Mostly cloudy Tuesday through Thursday AM, then partly cloudy Thursday afternoon.
• highs 62-58 lows 50-47. (seasonal averages high 60 low 48)

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Forecast for the Cascades in Lane County:

• Cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms early this afternoon, mostly cloudy with a slight (20%) chance of showers this evening, partly cloudy and colder late tonight,
• A mix of clouds and sun Saturday, partly cloudy in the evening, mostly cloudy at night,
• Then partly cloudy Sunday and Sunday night.
• snow level above 8,000 ft. today and tonight, free air freezing level 10,000 ft. Saturday and Saturday night, then 11,000 ft. Sunday and Sunday night.
• highs 52-62 lows near 37.
• Partly cloudy Monday (Memorial Day) through Tuesday night,
• partly cloudy with a slight (20%) chance of showers Monday night, a slight (20%) chance of showers Tuesday evening,
• Partly cloudy with a slight (20%) chance of showers Wednesday afternoon and evening,
• Then partly cloudy with a slight (20%) chance of Thursday afternoon.
• Free air freezing level 11,000 ft. Monday through Tuesday night, then snow level above 8,000 ft. Wednesday through Thursday.
• highs 58-62 cooling to 56 Thursday lows near 38.

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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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