Here is my new weekly weather quiz question. What is  a “Parapet Wall?” (No it’s not surrounding a castle.) 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) has taken over keeping the week dry and warmer. By Friday this frontal system will be approaching the Pacific Northwest. And, of course, a new frontal system will be located behind that one.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 32 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 6 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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, mostly cloudy tonight and Wednesday (a bit warmer), mostly cloudy with patchy fog late Wednesday night,
• Patchy AM fog, a mix of clouds and sun and a bit warmer Thursday afternoon, partly cloudy with patchy fog late Thursday night,
• Patchy AM fog, a mix of clouds and sun with a slight (20%) chance of rain Friday afternoon, then becoming mostly cloudy with rain Friday night.
• lows 38-47 highs 58-62.
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Saturday and Sunday, a slight (20%) chance of showers at night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Monday, a (40%) chance of rain Monday night,
• Then mostly cloudy and warmer with a slight (20%) chance of rain Tuesday.
• high 56-62 lows 45-43 warming back to 45 Monday night. (seasonal averages high 53 low 35).

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Home Wood Heating Advisory:

Eugene-Springfield: Yellow – Caution is advised.

Oakridge: Yellow – Caution is advised.

*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 tonight and Wednesday AM, partly cloudy in the afternoon, mostly cloudy with patchy fog late Wednesday night,
• Then patchy AM and late night fog, partly cloudy and a bit warmer Thursday and Thursday night,
• Patchy AM fog, mostly cloudy and a bit cooler with a (30%) chance of rain Friday afternoon, rain in the evening, then rain likely (70%) late Friday night.
• lows 42-47 cooling to 45 Friday night highs 62-67 cooling to 60 Friday.
• Mostly cloudy with a (40%) chance of showers and cooler Saturday, just mostly cloudy at night,
• Mostly cloudy with a (40%) chance of rain and a bit warmer Sunday, rain likely (60%) Sunday night,
• A (30%) chance of rain Monday, mostly cloudy with a slight (20%) chance of rain at night,
• Then just mostly cloudy and warmer Tuesday.
• highs 59-64 lows near 43. (seasonal averages high 55 low 38).

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

• Mostly cloudy tonight and Wednesday with a slight (20%) chance of coastal rain Wednesday afternoon, mostly cloudy in the evening, just mostly cloudy late Wednesday night,
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Partly cloudy and a bit cooler with a slight (20%) chance  of rain Friday AM, mostly cloudy with rain likely (70%) in the afternoon, rain in the evening, then rain likely (70%) Friday night.
• lows 46-49 cooling to 47 Friday night highs 58-64 cooling to 59 Friday.
• Mostly cloudy with a (40%) chance of rain and a bit cooler Saturday, just mostly cloudy at night,
• Mostly cloudy and a bit cooler with rain likely (70%) Sunday and Sunday night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain Monday, a slight (20%) chance of rain at night,
• Then just mostly cloudy and a bit warmer Tuesday.
• highs 60-57 warming to 63 Tuesday lows near 46. (seasonal averages high 53 low 41).

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Forecast for the Cascades in Lane County:

• Partly cloudy this evening, mostly cloudy tonight,
• A mix of clouds and sun and slightly warmer Wednesday, mostly cloudy in the evening,  just partly cloudy late Wednesday night,
• Partly cloudy and a bit warmer Thursday and at night,
• Partly cloudy with a slight (20%) chance of rain Friday afternoon, then rain Friday night.
• free air freezing level 10,000 ft. tonight, 8,000 ft. Wednesday and Wednesday night, 10,000 ft. Thursday, 11,000 ft. Thursday night, snow level above 8,000 ft. Friday, then 7,500 ft. falling to 5,000 ft. late Friday night.
• lows 32-35 cooling back to 32 Friday night highs 48-52.
• Mostly cloudy with rain and snow showers likely (70%) and a bit cooler Saturday, a slight (20%) chance of rain and snow showers at night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain Sunday, rain and snow Sunday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Monday, a good (50%) chance of rain and snow at night,
• Then mostly cloudy and warmer with a (30%) chance of rain Tuesday.
• snow level  4,000 ft. Saturday, 5,500 ft. Saturday night, 7,000 ft. Sunday, 5,000 ft. Sunday night, 4,000 ft. Monday, 5,500 ft. Monday night, then 7,000 ft. Tuesday.
• highs 42-44  cooling to 40 Monday warming to 50 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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