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Check out my latest Eugene Daily News Weather Or Not Column Can Satellites Really Find Contaminated Water?

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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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No winner this week. Here is my weekly weather quiz question for the last time. What is a “Geosynchronous Satellite?” Here is the correct answer. Geosynchronous is the term applied to any equatorial satellite with an orbital velocity equal to the rotational velocity of the earth. The net effect is that the satellite is virtually motionless with respect to an observer on the ground. I’ll have a new 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 ridge of high pressure (Shaded “Arch” shape with blue arrows)  will continue the sunshine and dry weather for Monday. Expect temperatures rising from the low 70s to near 80 which puts us 10 degrees or more above normal.  However, next week an upper level low (Shaded “U” shape with blue arrows on previous graphic) and a cold front (position shown is past us on Wednesday) will approach the coast Tuesday and bring back much colder temperatures and the chance of rain.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 73 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 53 in the Moderate 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 clear tonight,
• Mostly sunny Monday, mostly clear in the evening, mostly cloudy Monday night,
• Cloudy Tuesday AM, a mix of clouds and sun and cooler with a slight (20%) of afternoon showers, mostly cloudy with a slight (20%) chance of showers Tuesday night and Wednesday, partly cloudy with a slight (20%) chance of showers at night.
• lows 43-46 cooling back to 38 Wednesday night highs 76-63.
• A mix of clouds and sun with a slight (20%) chance of showers Thursday, mostly cloudy a (30%) chance of showers at night,
• A mix of clouds and sun with a (30%) chance of showers Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
• Mostly cloudy with a (30%) chance of showers Saturday, a (40%) chance of showers at night,
• Then mostly cloudy with a good (50%) chance of rain Sunday.
• highs 62-60 warming to 63 Sunday lows near 42. (seasonal averages high 62 low 40)
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Eugene-Springfield Pollen Count:

Trees: High- 171

Grass: High- 0

Reading as of: 4/14/15

Data courtesy of Oregon Allergy Associates

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Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny Monday, clear in the evening, clouds increasing to mostly cloudy late Monday night,
• Mostly cloudy and cooler Tuesday with a slight (20%) chance of showers  in the afternoon, cloudy with a slight (20%) chance of showers Tuesday night and Wednesday, then partly cloudy with a slight (20%) chance of showers at night.
• lows 46-40 highs 82-65.
• Partly cloudy with a slight (20%) chance of showers Thursday and Thursday night,
• Mostly cloudy with a (30%) chance of showers Friday, a slight (20%) chance of showers at night,
• Mostly cloudy with a (30%) chance of showers Saturday and Saturday night,
• Then mostly cloudy with a (30%) chance of rain Sunday.
• highs 60-63 cooling back to 60 Friday warning to 64 Saturday lows near 40. (seasonal averages high 63 low 42)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Clear with patchy coastal fog late tonight and Monday AM, sunny in the afternoon, mostly cloudy with patchy coastal fog while mostly clear inland in the evening, increasing clouds to mostly cloudy late Monday night,
• Mostly cloudy Tuesday with patchy AM coastal fog while a slight (20%) chance of inland showers in the afternoon, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday and in the evening, then just mostly cloudy Wednesday night.
• lows 49-44 highs 62-56.
• Partly cloudy with a slight (20%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers Friday through Saturday night,
• Then mostly cloudy with a (40%) chance of rain Sunday.
• highs 56-62 lows 44-47. (seasonal averages high 56 low 43)

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and warmer Monday, mostly clear Monday night,
• Partly cloudy with patchy drizzle in the lower elevations Tuesday AM, mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms Tuesday afternoon and evening, a (40%) chance of showers late Tuesday night and Wednesday morning, then partly cloudy with a slight (20%) chance of showers Wednesday night.
• free air freezing level 12,000 ft. tonight, 11,000 ft. Monday and Monday night, snow level 8,000 ft. Tuesday and Tuesday night, then 6,500 ft. Wednesday and Wednesday night.
• lows 33-38 cooling back to 30 Wednesday night highs 68-50.
• A mix of clouds and sun Thursday with a (30%) chance of rain and snow showers at night,
• A (30%) chance of rain and snow showers Friday, a (40%) chance of rain and snow showers at night,
• Mostly cloudy with a (30%) chance of showers Saturday, a (40%) chance of rain and snow showers Saturday night,
• Then mostly cloudy with a good (50%) chance of rain Sunday.
• snow level 6,000 ft. Thursday, 5,000 ft. Thursday night, 4,500 ft. Friday, 5,000 ft. Friday night, 4,500 ft. Saturday, then 6,000 ft. Saturday night and Sunday.
• highs 50-46 warming to 52 Sunday lows near 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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