Here is my weekly weather quiz question. What is a “Warm Core Low ?” 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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The jet stream is sending us more moisture giving us the potential of very heavy rainfall amounts in the Valley and falling snow levels in the mountains. This could good news for the anticipated ski season. Here is a  frontal system that pushed in Tuesday and overnight bringing more rain. Now we are in back of the frontal system staying wet.  Yet another frontal system approaches the coast Saturday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• *A HIGH WIND WARNING IS IN EFFECT UNTIL 4 PM THIS AFTERNOON FOR THE NORTH OREGON COAST,  THE CENTRAL OREGON COAST, THE COAST RANGE OF NORTHWEST OREGON, AND THE CENTRAL COAST RANGE OF NORTHWEST OREGON.
• *A HIGH WIND WARNING IS IN EFFECT UNTIL 2 PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• *A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM FRIDAY ABOVE 4,000 FT. FOR THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS,
• *A HIGH SURF WARNING IS IN EFFECT THROUGH 2 AM SATURDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• *A COASTAL FLOOD WARNING IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• *A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 AM FRIDAY ABOVE 4,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• *A FLOOD WATCH IS IN EFFECT THROUGH FRIDAY MORNING FOR THE SOUTH CENTRAL  OREGON COAST AND THE CURRY COUNTY COAST, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

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

• Mostly cloudy with showers and a slight (20%) chance of thunderstorms this afternoon (0.50 in. of rain possible, more in storms) and breezy (Wind: SW 15-25 mph gusts to 35 mph), evening showers, a good (50%) of showers and colder late tonight (0.25 in. of rain possible),
• Showers Friday (0.50 in. of rain possible) and breezy (Wind: S 10-15 mph increasing to S 15-25 mph in the afternoon), a good (50%) chance of showers late Friday night (0.10 in. of rain possible),
• Then mostly cloudy with rain Saturday and Saturday night.
• highs near 50 lows near 43.
• Mostly cloudy with rain and a bit cooler Sunday, mostly cloudy with a good (50%) chance of showers Sunday night and Monday, a (40%) chance of showers at night and Tuesday, then cloudy with a good (50%) chance of showers Tuesday night and Wednesday.
• highs near 45 lows near 36. (seasonal averages high 46 low 34)

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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.

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

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Forecast for Roseburg:

• Mostly cloudy with widespread showers with a slight (20%) chance of thunderstorms today and this evening (0.45 in. of rain possible, AM snow level 3,500 ft), showers late tonight (0.30 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late),
• Mostly cloudy with showers Friday (0.35 in. of rain possible, snow level 3,000 ft.rising to 3,500 ft. in the afternoon), evening showers, showers likely (70%) late Friday night (0.10 in. of rain possible).
• Then mostly cloudy with rain Saturday and Saturday night (may be heavy at times at night).
• highs 50-53 lows 43-47.
• Mostly cloudy with rain (heavy at times) and a bit cooler Sunday, evening showers likely (70%), rain and snow showers likely (70%) late Sunday night and Monday, a (30%) chance of rain and snow showers Monday night and Tuesday, a (40%) chance of showers Tuesday night,
• Then mostly cloudy with a (30%) chance of rain and snow showers Wednesday.
• highs 45-48 lows near 36. (seasonal averages high 48 low 37)

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

• Mostly cloudy and just a bit cooler with showers (0.60 in. of rain possible) with a slight (20%) chance of scattered thunderstorms this afternoon and breezy (Wind: SW 15-25 mph), widespread showers (0.20 in. of rain possible) with a slight (20%) chance of thunderstorms at the shore tonight while widespread evening showers (0.20 in. of rain possible) with a slight (20%) chance of thunderstorms inland this evening and widespread showers late tonight (0.45 in. of rain possible),
• Showers Friday (0.20 in. of rain possible) and Friday night,
• Then mostly cloudy with rain Saturday and breezy (Wind: SW 10mph increasing to S 20-30 mph in the afternoon at the shore while S 10-15 mph inland), then rain (possibly heavy at times) Saturday night.
• highs 53-55 lows 45-48.
• Mostly cloudy with rain (possibly heavy at times) Sunday, showers likely (70%) with a slight (20%) chance of thunderstorms and colder Sunday night,
• Cloudy with showers likely (70%) Monday, a slight (20%) chance of showers Monday night,
• Then mostly cloudy with a (40%) chance of showers Tuesday through Wednesday.
• highs 50-52 lows 44-40. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers this afternoon (0.50 in. of rain possible, 2-5 in. of snow possible) and breezy and cooler (SW 15-25 mph gusts 45 mph), rain and snow showers tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Rain and snow showers Friday (0.50 in. of rain possible, 3-7 in. of snow possible), rain and snow showers at night,
• Mostly cloudy with rain and snow Saturday, then rain and snow (possibly heavy) Saturday night.
• snow level 4,000 ft. today, 3,500 ft. tonight, 3,000 ft. Friday, 3,500 ft. Friday night, 3,000 ft. Saturday, then 5,500 ft. Saturday night.
• highs near 35 lows near 28.
• Rain and snow and a bit cooler Sunday, snow showers likely (70%) Sunday night,
• Mostly cloudy with a good (50%) chance of snow showers and a bit cooler Monday, cloudy with a (40%) chance of snow showers at night,
• Mostly cloudy with a good (50%) chance of snow showers Tuesday, then cloudy with a good (50%) chance of snow showers Tuesday night and Wednesday.
• snow level 4,000 ft. Sunday, then at the surface Sunday night through Wednesday.
• highs 30-28 warming to 34 Wednesday lows near 22.

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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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