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 50 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 15 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 FROM 9 PM TONIGHT UNTIL 5 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HIGH WIND WARNING IS IN EFFECT FROM 11 PM THIS EVENING UNTIL 4 AM THURSDAY FOR THE SOUTH CENTRAL OREGON CASCADES.
• A HIGH WIND WARNING IS IN EFFECT FROM 10 PM THIS EVENING THROUGH  2 PM THURSDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM THIS EVENING UNTIL 4 PM THURSDAY ABOVE 4,500 FT. FOR THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM THURSDAY UNTIL 4 AM FRIDAY ABOVE 4,000 FT. FOR THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS,
• A HIGH SURF WARNING IS IN EFFECT FROM 2 AM THURSDAY THROUGH 2 AM SATURDAY FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A COASTAL FLOOD WARNING IS IN EFFECT FROM 9 AM THURSDAY UNTIL 4 PM FRIDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A COASTAL FLOOD ADVISORY IS IN EFFECT UNTIL 1 PM TODAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM THURSDAY UNTIL 4 AM FRIDAY ABOVE 4,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WIND ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 AM THURSDAY FOR JACKSON COUNTY.
• 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 FLASH FLOOD WATCH IS IN EFFECT FROM 10 PM THIS EVENING THROUGH THURSDAY MORNING FOR CENTRAL DOUGLAS COUNTY,
• A COASTAL FLOOD WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• 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 a good (50%) chance of evening rain, rain and colder late tonight (0.50 in. of rain possible),
• Mostly cloudy Thursday and a bit cooler with rain (0.50 in. of rain possible) and breezy (Wind: SW 15-25 mph gusts to 35 mph late), cloudy with evening showers, a good (50%) of showers late Thursday night (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), evening showers likely (70%), a good (50%) chance of showers late Friday night (0.10 in. of rain possible),
• Then mostly cloudy with rain Saturday and Saturday night.
• lows 47-42 highs 50-46.
• Mostly cloudy with showers likely (70%) and a bit cooler Sunday and Sunday night,
• A (40%) chance of showers Monday, a (30%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers 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 evening rain likely (70%), rain (possibly heavy at times, 0.70 in. of rain possible) late tonight,
• Mostly cloudy with rain Thursday (0.45 in. of rain possible), showers Thursday night (0.30 in. of rain possible, snow level 3,500 ft.),
• Rain and snow showers Friday (0.35 in. of rain possible, snow level 3,000 ft.rising to 35 mph), evening showers likely (70%), a good (50%) chance of showers late Friday night (0.10 in. of rain possible).
• Then mostly cloudy with rain Saturday and Saturday night.
• lows 44-47 highs 50-53.
• Mostly cloudy with rain and a bit cooler Sunday, rain and snow showers likely (70%) 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 46-44 warming to 48 Wednesday 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:

• Cloudy with evening coastal rain likely (70%) with a slight (20%) chance of thunderstorms while evening rain likely (70%) inland, rain late (possibly heavy at times) tonight (0.75 in. of rain possible) and windy (Wind:SE 5-10 mph increasing to S 20-30 mph gusts to 45 mph late tonight),
• Mostly cloudy and just a bit cooler with AM coastal rain Thursday AM, rain (0.60 in. of rain possible) with a slight (20%) chance of thunderstorms in the afternoon and at night while showers inland Thursday night (0.45 in. of rain possible),
• Showers (0.20 in. of rain possible) with a slight (20%) chance of thunderstorms at the shore Friday while inland afternoon showers, showers likely (70%) Friday night,
• Then mostly cloudy with rain Saturday and Saturday night.
• lows 46-48 highs 53-55.
• Mostly cloudy with rain Sunday, showers likely (70%) and colder Sunday night,
• Cloudy with showers likely (70%) Monday, mostly cloudy with a slight (20%) chance of showers Monday night,
• Then mostly cloudy with a (%) 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 a good (50%) chance of evening rain and snow, rain and snow and colder tonight (1.00 in. of rain possible, 2 in. of snow possible) and breezy (Wind: S 10-15 mph shifting SW 15-25 mph late, gusts to 50 mph),
• Rain and snow Thursday (0.75 in. of rain possible, 4-7 in. of snow possible) and windy and cooler (SW 20-30 mph gusts to 50 mph), rain and snow showers at night,
• Rain and snow showers Friday and at night,
• Then mostly cloudy with rain and snow Saturday and Saturday night.
• snow level 5,000 ft. tonight, 4,000 ft. Thursday, 3,500 ft. Thursday night, 3,000 ft. Friday, 3,500 ft. Friday night, 3,000 ft. Saturday, then 4,500 ft. Saturday night.
• lows 32-27 highs near 35.
• Rain and snow showers 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,
• Then 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 and Monday, 2,500 ft. Monday night, then at the surface Tuesday through Wednesday.
• highs 3-28 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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