Here is my weekly weather quiz question. What is  “Rime Ice?” 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 (Shaded “Arch” shape with blue arrows) is moving away as low pressure (Shaded “U” shape with blue arrows) moves in. A frontal system is heading our way bringing showers and possible thunderstorms with it. Looks like a frontal system will make landfall early Friday at the Oregon/California border area. Another frontal system will moving down from the Northwest Monday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 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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Eugene-Springfield Pollen Count:

Grass………. Moderate (14)

Trees………. Very High (773)

Last Counted: 4/19/16

Data Courtesy of Oregon Allergy Associates.

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

• Partly cloudy with a slight (20%) chance of showers and thunderstorms late tonight (under 0.10 in. of rain possible),
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of AM showers and thunderstorms, a (40%) chance of showers and a slight (20%) chance of thunderstorms Wednesday afternoon (under 0.10 in. of rain possible, more in storms), mostly cloudy with a slight (20%) chance of showers in the evening, just mostly cloudy late at night,
• A mix of clouds and sun and a bit cooler Thursday, showers Thursday night,
• Mostly cloudy with showers likely (70%) and a bit cooler Friday, then a good (50%) chance of showers Friday night.
• lows 50-47 warming to 52 Thursday night cooling back to 47 Friday night highs 74-63.
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, showers likely (70%) Saturday night,
• A good (50%) chance of showers and a bit cooler Sunday, a (40%) chance of showers Sunday night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers at night,
• Then a mix of clouds and sun and a bit warmer with a (30%) chance of showers Tuesday.
• highs 62-58 warming to 62 Tuesday lows 44-42 warming back to 44 Monday night. (seasonal averages high 62 low 40).

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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.

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

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Forecast for Roseburg:

• Partly cloudy with a slight (20%) chance of thunderstorms this evening, mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Wednesday (under 0.10 in. of rain possible), a slight (20%) chance of evening thunderstorms, just mostly cloudy late Wednesday night,
• Mostly cloudy and a bit cooler with a (30%) chance of showers Thursday, showers Thursday night and Friday AM, showers likely (70%) and a bit cooler in the afternoon, then mostly cloudy with a good (50%) chance of showers Friday night.
• lows 54-49 warming to 55 Thursday night cooling to 45 Friday night highs 78-65.
• Cloudy with a good (50%) chance of showers a bit cooler Saturday, showers likely (70%) at night,
• Mostly cloudy and a bit cooler with showers likely (60%) Sunday, a (30%) chance of showers Sunday night,
• Then mostly cloudy with a slight (20%) chance of showers and a bit warmer Monday through Tuesday.
• highs 63-60 warming to 64 Tuesday lows 46-44. (seasonal averages high 63 low 42).

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

• Partly cloudy with a slight (20%) chance of evening coastal showers and a slight (20%) chance of thunderstorms late tonight while a slight (20%) chance of inland thunderstorms this evening and a (30%) chance of showers and a slight (20%) chance of thunderstorms inland late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of thunderstorms and a bit cooler Wednesday, a slight (20%) chance of evening showers, just mostly cloudy late Wednesday night,
• Mostly cloudy with a (30%) chance of showers Thursday, evening coastal showers and showers likely (70%) late at night while inland showers Thursday night,
• Mostly cloudy with AM showers, showers and a bit cooler Friday afternoon, then mostly cloudy with a (40%) chance of showers at night.
• lows 52-50 warming to 53 cooling back to 50 Friday night highs 63-60.
• Mostly cloudy with a (40%) chance of showers and a bit cooler Saturday, showers likely (70%) Saturday night and Sunday, mostly cloudy with a (30%) chance of showers Sunday night,
• Then mostly cloudy with a slight (20%) chance of showers Monday through Tuesday.
• highs 57-55 warming to 58 Tuesday lows 48-45. (seasonal averages high 56 low 43).

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Forecast for the Cascades in Lane County:

• Partly cloudy with a slight (20%) chance of showers this evening, mostly cloudy with a slight (20%) chance of showers and thunderstorms late tonight (0.10 in. of rain possible, more in storms),
• A mix of clouds and sun and a bit cooler Wednesday with slight (20%) chance of AM showers and thunderstorms, showers likely (70%) with a slight (20%) chance of thunderstorms in the afternoon (under 0.10 in. of rain possible, more in storms), mostly cloudy with a (40%) chance of evening showers and a slight (20%) chance of thunderstorms, partly cloudy with a slight (20%) chance of showers late Wednesday night,
• A mix of clouds and sun with a (40%) chance of showers and a bit cooler Thursday afternoon, showers Thursday night,
• Mostly cloudy with showers likely (60%) Friday AM, showers with a slight (20%) chance of thunderstorms and a bit cooler in the afternoon, then cloudy with a good (50%) chance of showers Friday night.
• snow level above 8,000 ft. tonight through Thursday night, then 7,000 ft. Friday and Friday night.
• lows 40-35 highs 65-50.
• Mostly cloudy with rain and snow showers likely (70%) Saturday through Sunday, a good (50%) chance of rain and snow showers Sunday night,
• A mix of clouds and sun with a slight (20%) chance of rain and snow showers Monday, partly cloudy with a (30%) chance of rain and snow showers at night,
• Then a mix of clouds and sun with a (30%) chance of rain and snow showers Tuesday.
• snow level 5,500 ft. Saturday and Saturday night, 4,000 ft. Sunday, 3,500 ft. Sunday night, 3,000 ft. Monday, 4,000 ft. Monday night, then 3,500 ft. Tuesday.
• highs 45-40 warming to 43 Tuesday lows 32-28 warming back to 32 Monday night.

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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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