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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Another upper level trough of low pressure (Shaded “U” shape with blue arrows) will move in increasing the marine airflow for more clouds and cooler temperatures and showers with possible thunderstorms today.  A frontal system is heading our way bringing more showers and possible thunderstorms with it. By the middle of next week a frontal system approaches the West Coast. By next weekend it looks like a frontal system will be heading our way from the Northwest.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 17 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 (11)

Trees………. Very High (529)

Last Counted: 4/21/16

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:

• A good (50%) chance of showers and a bit cooler today (0.10 in. of rain possible), showers tonight (0.50 in. of rain possible),
• Mostly cloudy with showers likely (70%) Sunday AM, showers likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler in the afternoon, mostly cloudy with a good (50%) chance of showers and a slight (20%) chance of thunderstorms in the evening, a (30%) chance of showers and colder Sunday night,
• Mostly cloudy with a (30%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, then just partly cloudy at night.
• highs 60-56 lows 46-38.
• A mix of clouds and sun and a bit warmer Tuesday, becoming mostly cloudy with a slight (20%) chance of showers Tuesday night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday, a slight (20%) chance of showers at night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of showers Thursday night,
• Then a mix of clouds and sun Friday.
• highs 60-65 lows near 43. (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:

• Mostly cloudy with a (30%) chance of AM showers, showers likely (70%) and a bit cooler this afternoon and evening (under 0.10 in. of rain possible), showers late tonight (0.15 in. of rain possible),
• Showers likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler Sunday (snow level 3,000 ft.), a (40%) chance of evening showers, a (30%) chance of rain and snow showers late Sunday night (snow level 3,000 ft.),
• Mostly cloudy with a (30%) chance of AM rain and snow showers, a (30%) chance of showers and a bit warmer  Monday afternoon, then just mostly cloudy Monday night.
• highs 62-55 lows 45-39.
• Just mostly cloudy and a bit warmer Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night,
• Cloudy with a good (50%) chance of showers Wednesday, mostly cloudy with a (30%) chance of showers at night,
• Then mostly cloudy with a slight (20%) chance of showers and a bit warmer Thursday through Friday.
• highs 63-68 lows near 45. (seasonal averages high 64 low 43).

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

• Cloudy with coastal showers likely (60%) and a bit cooler today and this evening while a (30%) chance of inland AM showers and inland showers likely (70%) this afternoon (0.25 in. of rain possible), evening showers likely (70%), showers late tonight (0.15 in. of rain possible),
• Mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms Sunday AM, showers likely (70%) and a bit cooler in the afternoon, then mostly cloudy with a good (50%) chance of showers Sunday night,
• Mostly cloudy with a (40%) chance of showers and a bit warmer Monday, then just mostly cloudy Monday night.
• highs 58-55 lows 48-42.
• Mostly cloudy and a bit warmer Tuesday, a (40%) chance of showers Tuesday night,
• Cloudy with a good (50%) chance of showers Wednesday, then mostly cloudy with a slight (20%) chance of showers  Wednesday night through Friday.
• highs 62-58 warming to 60 Friday lows near 48. (seasonal averages high 56 low 44).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of rain and snow showers today (0.10 in. of rain possible), rain and snow showers tonight (0.50 in. of rain possible, 1-4 in. of snow possible),
• Mostly cloudy with rain and snow showers and a bit cooler Sunday, rain and snow showers likely (70%) in the evening, a good (50%) chance of rain and snow showers and colder Sunday night,
• Mostly cloudy with a (30%) chance of rain and snow showers Monday AM, a slight (20%) chance of rain and snow showers and a bit warmer in the afternoon, then a (30%) chance of rain and snow showers at night.
• snow level 4,500 ft. today, 5,000 ft.falling to 4,500 ft. tonight, 4,000 ft. Sunday, 3,000 ft. Sunday night, 2,500 ft. Monday, then 4,000 ft. Monday night.
• highs 48-38 lows 32-24 warming to 27 Monday night.
• A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy Tuesday night,
• Mostly cloudy and a bit warmer with a (40%) chance of rain and snow showers Wednesday, a (30%) chance of showers Wednesday night and Thursday, a slight (20%) chance of rain and snow showers at night,
• Then a mix of clouds and sun and a bit warmer with a (30%) chance of showers Friday.
• free air freezing level 4,500 ft. Tuesday, 5,500 ft. Tuesday night, snow level 4,500 ft. Wednesday, 6,000 ft. Wednesday night, 6,500 ft. Thursday, then 7,500 ft. Thursday night and Friday.
• highs 45-52 lows 29-32.

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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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