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Check out my latest Eugene Daily News Weather Or Not Column It’s That Time Again And I Have Too Many Digital Clocks To Change.

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Here is my new weekly weather quiz question. What determines if a tropical storm becomes a hurricane? 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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ADVISORIES:

A NEW Blue-Green Algae warning has been issued for Tenmile Lakes in Coos County. A Blue-Green Algae warning has been lifted for Walterville Pond, Dorena Reservoir and Dexter Reservoir,  but continues for Fern Ridge Reservoir and  at Devils Lake. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

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An upper level low will be moving over us bringing back the chance of showers. A frontal system has pushed through the Pacific Northwest bringing cooler air and enhancing the chance of showers. Another frontal system will approach Oregon late in the week

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

• Mostly cloudy with AM showers likely (60%), a good (50%) chance of showers and cooler this afternoon (0.10 in. of rain possible), partly cloudy with a (40%) chance of evening showers, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers Tuesday AM, showers likely (60%) in the afternoon (0.10 in. of rain possible), partly cloudy with patchy fog and a slight (20%) chance of showers late Tuesday night (under 0.10 in. of rain possible),
• Partly cloudy with patchy fog Wednesday AM, mostly sunny in the afternoon, then pertly cloudy Wednesday night,
• highs 62-56 warming to 62 Wednesday lows 44-35 warming to 42 Wednesday.
• Partly cloudy with a slight (20%) chance of showers Thursday, partly cloudy at night,
• A mix of clouds and sun with a slight (20%) chance of showers Friday, Saturday and Sunday while partly cloudy with a slight (20% ) chance of showers Friday night and Saturday night.
• highs near 60 lows 45-42. (seasonal averages high 69 low 43)

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

• Mostly cloudy today with coastal rain likely (60%) while a good (50%) chance of rain inland, a (40%) chance of showers this evening (under 0.10 in. of rain possible).
• Mostly cloudy with a (40%) chance of showers Tuesday (under 0.10 in. of rain possible), a (40%) chance of showers Tuesday night (under 0.10 in. of rain possible).
• Just partly cloudy Wednesday and Wednesday night.
• highs 62-59 lows 48-44 warming to 47 Wednesday night.
• Partly cloudy Thursday through Friday night,
• Partly cloudy with a slight (20%) chance of showers Saturday and Saturday night,
• Then mostly cloudy with a slight (20%) chance of showers Sunday.
• highs 60-65 lows near 48. (seasonal averages high 62 low 47)

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Forecast for the Cascades of Lane County: