Here is my new weekly weather quiz question. What is “Shear?” 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 is moving down from Canada to return the chance of rain today.  A frontal system moves in with cooler temperatures and the chance of showers. By the end of the week another frontal system moves in to our South continuing the rain chances, small though they may be.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Ozone.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Ozone.

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

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Advisories:

• A RED FLAG WARNING IS IN EFFECT FROM 2 PM THIS AFTERNOON UNTIL 8 PM TONIGHT FOR GUSTY WINDS AND LOW HUMIDITY.

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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 bit cooler this afternoon (under 0.10 in. of rain possible), a good (50%) chance of showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy with showers and a slight (20%) chance of isolated thunderstorms Tuesday afternoon (0.25 in. of rain possible, small hail possible) and evening, a (30%) chance of showers late Tuesday night (small hail possible),
• Mostly cloudy with a (30%) chance of showers Wednesday and Wednesday night.
• highs 65-63 warming to 68 Wednesday lows 48-45.
• Mostly cloudy with a (40%) chance of showers Thursday through Friday, a (30%) chance of showers Friday night,
• Partly cloudy with a slight (20%) chance of showers Saturday and in the evening, mostly cloudy late at night and Sunday AM, then mostly sunny in the afternoon.
• highs 65-72 lows near 46. (seasonal averages high 72 low 47).

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Eugene-Springfield Pollen Count:

Grass………. Very High (246)

Trees………. Low (10)

Last Counted: 6/13/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy and a bit cooler with a (30%) chance  of showers this afternoon and tonight,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Tuesday, a (30%) chance of showers at night,
• Mostly cloudy and a bit warmer with a (30%) chance of showers Wednesday, a (30%) chance of showers and a slight (20%) chance of thunderstorms in the evening, then a (30%) chance of showers late Wednesday night.
• highs 68-64 warming back to 68 Wednesday lows 49-46.
• Mostly cloudy with a good (50%) chance of showers and a bit warmer Thursday through Friday night, then  partly cloudy and a bit warmer with slight (20%) chance of showers Saturday through Sunday.
• highs 67-78 lows 49-52. (seasonal averages high 75 low 51).

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

• Mostly cloudy with a (30%) chance of showers and a bit cooler this afternoon, a (30%) chance of evening showers, showers likely (60%) late tonight,
• Mostly cloudy and a bit cooler with AM coastal showers likely (60%) while a (40%) chance of inland showers Tuesday, a (30%) chance of showers at night,
• Mostly cloudy with a (30%) chance of showers Wednesday, a slight (20%) chance of thunderstorms in the evening, then a (40%) chance of showers late Wednesday night.
• highs near 60 lows 50-48 warming back to 50 Wednesday night.
• Mostly cloudy and a bit warmer with a good (50%) chance of showers Thursday through Friday night,
• Partly cloudy with a slight (20%) chance of showers and a bit warmer Saturday and Saturday night,
• Then just partly cloudy Sunday.
• highs 60-64 lows 50-52. (seasonal averages high 61 low 50)

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Forecast for the Cascades in Lane County:

• Mostly cloudy and a bit cooler this afternoon with a good (50%) chance of showers (under 0,10 in. of rain possible), a good (50%) chance of evening showers, rain and snow showers likely (70%) late tonight (0.10 in. of rain possible, 1 in. of snow possible),
• Mostly cloudy with rain and snow showers and a bit cooler Tuesday with small hail possible (0.25 in. of rain possible, 1-3 in. of snow possible), rain and snow showers Tuesday night with small hail possible,
• A mix of clouds and sun with a (40%) chance of rain and snow showers and a bit warmer Wednesday, then mostly cloudy with a good (50%) chance of rain and snow showers at night.
• snow level above 8,000 ft. today, 7,000 ft. falling to 5,000 ft. late tonight, 4,500 ft. Tuesday and Tuesday night, 5,000 ft. Wednesday, then 6,000 ft. Wednesday night.
• highs 56-45 warming to 53 Wednesday lows 35-33.
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Thursday through Friday, a (30%) chance of showers Friday night,
• Then partly cloudy and a bit warmer with a slight (20%) chance of showers Saturday through Sunday.
• snow level 6,000 ft. Thursday through Friday, 6,500 ft. Friday night and Saturday, 8,000 ft. Saturday night, then above 8,000 ft. Sunday.
• highs 47-59 lows 34-38.

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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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