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Here is my new weekly weather quiz question. What is the first rule when driving in fog?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 FREEZING FOG ADVISORY IS IN EFFECT UNTIL NOON TUESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A Blue-Green Algae warning  has been cancelled for Tenmile Lakes in Coos County, but continues for Fern Ridge Reservoir, Lost Creek Lake, and Willow Creek Reservoir (NE Oregon). 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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The upper airflow has become a ridge of high pressure that will keep us milder for a while.   The snow is just about gone on the valley floor except where it was piled up. In the hills it is melting away slowly.

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Air Quality Index:

Eugene-Springfield: The Pollution Index is 35 in the Good category measuring Particulate Matter at Springfield City Hall. Data courtesy of Lane Regional Air Protection Agency (LRAPA)

Oakridge: The Pollution Index is 52 in the Moderate category measuring Particulate Matter at Willamette Activity Center, Oakridge.  Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

Eugene/Springfield: (YELLOW) Burning Cautioned Against.

Oakridge: (YELLOW) Burning Cautioned Against.

Pellet stoves are always allowed.

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

• Partly cloudy this evening with patchy fog, areas of dense fog late tonight,
• Areas of dense AM fog, mostly cloudy with patchy fog Tuesday afternoon, mostly cloudy with patchy fog and a (30%) chance of light rain or drizzle late Tuesday night (under 0.10 in. of rain possible),
• Cloudy with a (40%) chance of rain or drizzle Wednesday AM, a good (50%) chance of rain in the afternoon (0.10 in. of rain possible), a good (50%) chance of rain and snow showers Wednesday night (under 0.10 in. of rain possible),
• A mix of clouds and sun with areas of fog Thursday, then just mostly cloudy at night.
• lows 32-35 cooling to near 29 Thursday night highs 44-38.
• Cloudy with a good (50%) chance of rain Friday, rain likely (60%) Friday night,
• Mostly cloudy with a good (50%) chance of rain Saturday, a (40%) chance of rain Saturday night,
• Mostly cloudy with a (30%) chance of rain Sunday, cloudy with a (30%) chance of rain at night,
• Then mostly cloudy with a (40%) chance of rain Monday.
• highs 43-52 lows 36-40. (seasonal averages high 45 low 34).

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

• Partly cloudy with areas of coastal fog late tonight,
• Areas of AM coastal fog, partly cloudy Tuesday and Tuesday evening, mostly cloudy with a slight (20%) chance of rain late Tuesday night (under 0.10 in.(0.10 in. of rain possible),
• Coastal rain likely (60%) Wednesday (under 0.10 in. of rain possible) while a good (50%) chance of inland AM rain, rain likely (60%) at night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, partly cloudy Thursday afternoon, then just mostly cloudy at night.
• lows 35-40 cooling to near 35 Wednesday night highs 52-46.
• Mostly cloudy with a (40%) chance of rain and snow showers Friday AM, a (40%) chance of showers in the afternoon, mostly cloudy with a good (50%) chance of rain Friday night, a (40%) chance of rain Saturday, then mostly cloudy with a slight (20%) chance of rain Saturday night and Sunday.
• highs 49-54 lows 44-40 warming to 43 Sunday night. (seasonal averages high 51 low 39)

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Forecast for the Cascades of Lane County:

• Partly cloudy tonight through Tuesday evening, mostly cloudy with a slight (20%) chance of rain in the evening, mostly cloudy with a slight (20%) chance of rain or drizzle late Tuesday night,
• Mostly cloudy with rain and snow likely (60%) and colder Wednesday, evening snow showers likely (60%), a good (50%) chance of snow showers and colder Wednesday night,
• A mix of clouds and sun with a slight (20%) chance of snow showers Thursday, then just partly cloudy at night.
• free air freezing level 10,000 ft. tonight, 9,000 ft. Tuesday, snow level 7,500 ft. Tuesday night, 4,000 ft. Wednesday, at the surface Wednesday night and Thursday, then free air freezing level at the surface Thursday night.
• lows 38-19 highs 48-26.
• Mostly cloudy with a (40%) chance of AM snow, a good (50%) chance of afternoon rain and snow Friday, rain likely (60%) Friday night,
• A (40%) chance  of rain Saturday, a (30%) chance of rain and snow Saturday night,
• Mostly cloudy with a slight (20%) chance of rain Sunday and Sunday night,
• Then mostly cloudy with a (30%) chance of rain Monday.
• snow level at the surface Friday, 6,000 ft. at night, 7,000 ft. Saturday, 6,000 ft. Saturday night,  7,500 ft. Sunday and Sunday night, then 7,000 ft. Monday.
• highs 34-42 lows 28-32.