Here is my weekly weather quiz question. What is  “Aphelion?”  Please remember to post your answer at the bottom of this page. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level High Pressure Ridge  (Shaded “Arch” with blue arrows) is being replaced by an upper level low pressure trough (Shaded “U” shape with blue arrows). The graphic for days 1-3 shows the front moving southward to Oregon. The graphic for days 3-7 shows a frontal system headed for us next Tuesday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 44 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 60 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 44 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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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.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

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

• Mostly cloudy with a (40%) chance of rain and a bit cooler this afternoon (under 0.10 in. of rain possible), a good (50%) chance of rain at night (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM rain, rain and a bit cooler Friday afternoon (0.25 in. of rain possible) and evening, showers late Friday night (0.50 in. of rain possible),
• Mostly cloudy and a bit cooler with showers Saturday (0.10 in. of rain possible)and at night.
• highs 52-49 lows 40-35.
• Mostly cloudy and a bit cooler with showers likely (70%)  Sunday and Sunday night,
• Mostly cloudy and a bit warmer with showers Monday, showers likely (70%) and a bit warmer Monday night through Tuesday night,
• Then cloudy with a good (50%) chance of rain and a bit warmer Wednesday.
• highs 44-52 lows 36-40. (seasonal averages high 54 low 36)

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Forecast for Roseburg:

• Mostly cloudy and a bit cooler this afternoon, a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of rain Friday (0.25 in. of rain possible), rain Friday night (0.50 in. of rain possible, snow level 3,000 ft. late at night),
• Then rain and snow and a bit cooler Saturday (0.25 in. of rain possible) and Saturday night.
• highs 55-48 lows 39-35.
• Cloudy and a bit cooler with rain and snow likely (70%) Sunday, rain and snow showers Sunday night,
• Rain and snow showers and a bit warmer Monday, rain and snow showers likely (70%) Monday night,
• Cloudy and a bit warmer with a good (50%) chance of showers Tuesday, rain and snow showers likely (70%) at night,
• Then cloudy and a bit warmer with a (30%) chance of rain Wednesday.
• highs 44-52 lows 35-38. (seasonal averages high 56 low 38)

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

• Mostly cloudy this afternoon, a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible),
• Cloudy with AM rain, coastal rain and a bit warmer in the afternoon while a bit warmer with afternoon inland rain likely (70%) Friday (0.50 in. of rain possible), rain and a bit cooler at night(0.75 in. of rain possible) and Saturday (0.25 in. of rain possible, snow level 2,000 ft.), evening showers with a slight (20%) chance of thunderstorms, then showers late Saturday night.
• highs 52-48 lows 44-40.
• Mostly cloudy and a bit cooler with showers Sunday, rain and snow showers Sunday night and Monday (warmer), showers likely (70%) and a bit warmer Monday night through Tuesday night,
• Then cloudy with a good (50%) chance of rain and a bit warmer Wednesday.
• highs 46-53 lows 38-42. (seasonal averages high 54 low 41)

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit cooler today, becoming mostly cloudy with a (30%) chance of rain and snow tonight,
• Mostly cloudy with a (30%) chance of AM rain and snow, rain and snow likely (70%) Friday afternoon (0.25 in. of rain possible, 2 in. of snow possible), rain and snow Friday night and Saturday (a bit cooler), then snow showers Saturday night.
• freer freezing level 6,000 ft. this afternoon, snow level 4,500 ft. tonight and Friday, 4,000 ft. Friday night, 3,000 ft. Saturday, then 2,500 ft. Saturday night,
• highs 38-34 lows near 26-28 cooling to 20 Saturday night.
• Mostly cloudy and a bit cooler with snow showers Sunday through Monday, rain and snow showers likely (70%) Monday night,
• Snow showers likely (70%) and  a bit warmer Tuesday and at night,
• Cloudy with a good (50%) chance of rain and snow Wednesday.
• snow level at the surface Sunday through Monday, 3,000 ft. Monday night, at the surface Tuesday, 3,500 ft. Tuesday night, then 4,500 ft. Wednesday.
• highs 28-37 lows 22-26.

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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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