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Check out my latest Eugene Daily News Weather Or Not Column Some Anniversaries Aren’t To Be Cheerfully Celebrated.

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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 for the last time. What is a “lysimeter?”  Here is the correct answer. A Lysimeter In hydrologic terms, a device to measure the quantity or rate of downward water movement through a block of soil usually undisturbed, or to collect such percolated water for analysis as to quality. I’ll have a new weekly weather quiz question for you starting Monday. 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 high pressure ridge (“Arch” shape with blue arrows offshore) took over to keep us warmer than normal. Now an upper level low (Shaded “U” shape with blue arrows of the same graphic) will swing in through California returning the clouds and the chance of showers and at the same time cooling us down.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 40 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 27 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 36 in the Good category measuring Particulate Matter.

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

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Advisories: None At This Time.

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

• Mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible, more in storms),
• Cloudy and cooler with showers likely (60%) with a slight (20%) chance of thunderstorms Monday AM, showers likely (60%) in the afternoon (0.10 in. of rain possible), a good (50%) chance of showers Monday night (under 0,10 in. of rain possible),
• A good (50%) chance of showers Tuesday AM, showers likely (60%) in the afternoon and cooler (under 0,10 in. of rain possible), a (40%) chance of evening showers, a slight (20%) chance of showers late at night (under 0,10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers and warmer Wednesday and in the evening, then just mostly cloudy late Wednesday night.
• lows 54-49 highs 65-62 warming to 67 Wednesday.
• Mostly cloudy Thursday AM, partly cloudy and warmer in the afternoon and at night,
• Mostly sunny and warmer Friday and Saturday, mostly clear both nights,
• Then sunny Sunday.
• highs 71-83 lows 46-52. (seasonal averages high 70 low 46)
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Eugene-Springfield Pollen Count

Trees: Moderate- 16

Grass: Very High- 245

Reading as of: 5/29/15

Data courtesy of Oregon Allergy Associates.

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Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy scattered thunderstorms this evening,  a (40%) chance of scattered showers and isolated thunderstorms late tonight (under 0.10 in. of rain possible),
• Cloudy with a (40%) chance of scattered AM showers, increasing afternoon showers likely (60%) and much colder (0.15 in. of rain possible), a (40%) chance of showers Monday night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers Tuesday (under 0.10 in. of rain possible), a slight (20%) chance of showers Tuesday night,
• Then mostly cloudy and a bit warmer Wednesday and Wednesday at night.
• lows 54-49 highs 82-68.
• Mostly cloudy Thursday AM, partly cloudy in the afternoon and evening with a slight (20%) chance of thunderstorms, just partly cloudy late Thursday night,
• Mostly sunny and warmer Friday, mostly clear at night,
• Then sunny and even warmer Saturday, clear Saturday night,
• Then sunny with a slight (20%) chance of thunderstorms Sunday.
• highs 70-80 lows 50-53. (seasonal averages high 73 low 50)
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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of isolated coastal showers this evening and a (30%) chance of scattered coastal showers late tonight while a (30%) chance of inland showers tonight (under 0.10 in. of rain possible),
• Cloudy with scattered coastal showers likely (60%) Monday while increasing AM inland showers and scattered inland showers likely (60%)  in the afternoon (0.15 in. of rain possible), a (40%) chance of showers Monday night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers Tuesday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Tuesday night,
• Then just mostly cloudy Wednesday and Wednesday night.
• lows 50-52 highs 58-60 cooling back to 58 Wednesday.
• Mostly cloudy Thursday, partly cloudy at night,
• Then mostly sunny Friday, Saturday and Sunday with mostly clear nights.
• highs 60-65 lows 50-52. (seasonal averages high 60 low 49)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms this evening, showers likely (60%) and a slight (20%) chance of thunderstorms late tonight through Monday, showers likely (70%) Monday night,
• Cloudy with showers likely (70%) and cooler Tuesday, mostly cloudy with a good (50%) chance of evening showers Tuesday night,
• Then mostly cloudy and warmer with a slight (20%) chance of showers Wednesday and Wednesday night.
• snow level above 8,000 ft. tonight and Monday, 8,000 ft. late Monday night, 7,500 ft. Tuesday, 7,000 ft. Tuesday night and Wednesday, then 7,500 ft. Wednesday.
• lows 43-38 highs 53-48 warming back to 53 Wednesday.
• A mix of clouds and sun with a slight (20%) chance of showers Thursday,  partly cloudy with a slight (20%) chance of evening showers,  just partly cloudy late Thursday night,
• Mostly sunny and warmer Friday and Saturday, mostly clear Friday night, clear Saturday night,
• Then sunny Sunday.
• snow level 7,500 ft. rising to above 8,000 ft. Thursday through the evening, free air freezing level 11,000 ft. late Thursday night, 11,000 ft. rising to 12,000 ft. Friday afternoon, 12,000 ft. rising to 13,000 ft. late Friday night, 13,000 ft. rising to 14,000 ft. Saturday afternoon through Sunday.
• highs 57-73 lows 38-46.

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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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