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 toward Oregon. The graphic for days 3-7 shows a frontal system headed for us middle to late next week. 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 7 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 2 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 WINTER WEATHER ADVISORY IS IN EFFECT FOR TONIGHT FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM SATURDAY UNTIL 10 AM SUNDAY ABOVE 2,000 FT. FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM SATURDAY UNTIL 10 AM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER STORM WATCH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• 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 rain this evening, showers likely (70%) late tonight (0.25 in. of rain possible),
• Mostly cloudy and a bit cooler with showers Saturday and a slight (20%) chance of  thunderstorms in the afternoon and evening (0.25 in. of rain possible, small hail possible afternoon and evening), showers at night (0.25 in. of rain possible),
• A bit cooler with showers Sunday (snow level 1,000 ft.), showers at night (snow level 1,000 ft.),
• Mostly cloudy and a bit warmer with showers Monday (snow level 1,000 ft.) and in the evening, then rain Monday night.
• lows 39-33 warming back to 39 Monday night highs 46-44 warming back to 46 Monday.
• Mostly cloudy with rain and a bit warmer Tuesday, showers Tuesday night,
• A bit warmer with rain likely (70%) Wednesday and at night,
• Mostly cloudy with rain and a bit warmer Thursday, a good (50%) chance of showers Thursday night,
• Then a bit cooler with a (30%) chance of showers Friday.
• highs near 53 lows 43-36. (seasonal averages high 54 low 36)

 

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Forecast for Roseburg:

• Mostly cloudy with evening rain, rain and snow likely (70%) late tonight (0.50 in. of rain possible, 1 in. of snow possible, snow level 3,500 ft. falling to 2,000 ft. late tonight),
• Rain and snow showers and a bit cooler Saturday (1-2 in. of snow possible, snow level 2,000 ft. falling to 1,500 ft. in the afternoon), showers, snow showers, and a slight (20%) chance of thunderstorms in the evening, rain and snow showers late Saturday night (2-4 in. of snow possible, snow level 2,000 ft. falling to 900 ft. late at night),
• Cloudy with AM rain and snow showers, showers and snow showers with a slight (20%) chance of thunderstorms and a bit cooler Sunday afternoon and evening, rain and snow showers late Sunday night (snow level 900 ft.),
• Rain and snow showers and a bit cooler Monday and in the evening, then rain and snow Monday night.
• lows 38-32 warming back to 38 Monday night highs 47-42.
• Mostly cloudy and a bit warmer with rain likely (70%) Tuesday, showers likely (70%) at night
• A bit warmer with a (40%) chance of showers Wednesday and Wednesday night,
• Mostly cloudy with a (40%) chance of rain Thursday, a (30%) chance of showers at night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday.
• highs 50-54 cooling back to 50 Friday lows 44-46 cooling to 42 Thursday night. (seasonal averages high 56 low 38)

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

• Cloudy with a rain this evening, a good (50%) chance of rain late tonight (0.75 in. of rain possible) and breezy (Wind: SW 15-25 mph decreasing and shifting W 10-15 mph late tonight),
• Mostly cloudy with coastal showers while inland rain and snow showers and a bit cooler Saturday (0.25 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft., no snow accumulation expected), coastal showers with a slight (20%) chance of thunderstorms at night while inland showers, snow showers and a slight (20%) chance of thunderstorms Saturday night (snow level 1,500 ft. falling to 1,000 ft. late at night),
• Mostly cloudy with coastal showers, snow showers and a slight (20%) chance of thunderstorms Sunday AM with showers and a slight (20%) chance of coastal thunderstorm and a bit warmer in the afternoon and evening while inland showers, snow showers and a slight (20%) chance of thunderstorms Sunday and in the evening (snow level 300 ft. rising to 800 ft. in the afternoon), coastal showers late at night while inland rain and snow showers late Sunday night (snow level 1,000 ft. rising to 1,500 ft. late at night),
• Mostly cloudy with rain and snow showers and a bit cooler Monday, evening showers, then cloudy with rain late Monday night.
• lows 40-36 warming to 42 Monday night highs 45-47 cooling back to 45 Monday.
• Mostly cloudy and a bit warmer with rain and breezy Tuesday, showers likely (70%) and a bit warmer Tuesday night and Wednesday, cloudy with a good (50%) chance of showers Wednesday night,
• Mostly cloudy with a good (50%) chance of rain Thursday, then a (30%) chance of showers and a bit cooler Thursday night and Friday.
• highs 50-54 cooling back to 50 Friday lows 49-44. (seasonal averages high 54 low 41)

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain or snow this evening, showers late tonight (0.50 in. of rain possible, 4-8 in. of snow possible),
• Cloudy with showers and a bit cooler Saturday (0.50 in. of rain possible, 3-6 in. of snow possible), snow showers and a bit cooler Saturday night (2-5 in. of snow possible),
• Snow showers and a bit cooler Sunday through Monday evening (a bit warmer Monday), then rain or snow late at night.
• snow level 4,500 ft. falling to 3,000 ft. late tonight, 3,000 ft. Saturday, 2,000 ft. Saturday night, at there surface Sunday through Monday, then 3,000 ft. Monday night.
• lows near 28-18 warming to 24 Monday night highs 34-28 warming to 30 Monday.
• Cloudy with rain or snow and a bit warmer Tuesday, showers at night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain Wednesday, cloudy with a good (50%) chance of rain Wednesday night,
• Cloudy with rain likely (70%) and a bit warmer Thursday, then mostly cloudy with a good (50%) chance of showers at night and Friday (a bit cooler).
• snow level 3,500 ft. Tuesday, 5,000 ft. Tuesday night, 6,000 ft. Wednesday, 7,000 ft. Wednesday night and Thursday, 4,500 ft. Thursday night, then 3,500 ft. Friday.
• highs 34-42 cooling to 35 Friday lows 28-30 cooling to 27 Thursday 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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