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 7 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 9 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 1 PM THIS AFTERNOON FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• A HIGH WIND WARNING IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 6 PM THURSDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH  THROUGH THURSDAY MORNING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A HIGH SURF WARNING IS IN EFFECT FROM 2 AM THURSDAY THROUGH 2 AM SATURDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A COASTAL FLOOD WARNING IS IN EFFECT FROM 9 AM THURSDAY UNTIL 3 AM 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 WIND ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 6 PM THURSDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A WIND ADVISORY IS IN EFFECT UNTIL 1 PM TODAY FOR THE KLAMATH BASIN.
• 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 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 showers this AM, a good (50%) chance of afternoon showers and a slight (20%) chance of thunderstorms (0.25 in. of rain possible), a good (50%) chance of evening rain, rain (possibly heavy at times) and colder late tonight (0.50 in. of rain possible),
• Mostly cloudy with AM rain, a bit cooler with showers Thursday afternoon (0.50 in. of rain possible), then showers likely (70%) Thursday night (0.15 in. of rain possible) through Friday night.
• highs 55-48 lows 44-42.
• Mostly cloudy with rain Saturday, rain likely (70%) Saturday night,
• Cloudy with showers likely (70%) Sunday, then mostly cloudy with a good (50%) chance of showers Sunday night through Tuesday.
• highs 49-46 lows 38-36. (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:

• Cloudy with AM rain, isolated showers and a bit cooler this afternoon (0.45 in. of rain possible, snow level 3,500 ft.), evening rain likely (70%), rain (possibly heavy at times, 0.70 in. of rain possible) late tonight,
• Mostly cloudy with rain Thursday AM, showers in the afternoon (0.35 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft. in the afternoon), showers Thursday night (0.30 in. of rain possible, snow level 3,000 ft.),
• Rain and snow showers Friday (snow level 3,000 ft.), evening showers, then a good (50%) chance of showers late Friday night.
• highs 58-50 lows 46-43.
• Mostly cloudy with AM showers, rain, heavy at times, Saturday afternoon and Saturday night,
• Mostly cloudy with rain Sunday, evening rain likely (70%), rain and snow likely (70%) Sunday night,
• Cloudy with a good (50%) chance of rain and snow showers Monday, then cloudy with a (30%) chance of showers Monday night and Tuesday.
• highs 51-47 warming to near 50 Tuesday lows 40-36. (seasonal averages high 48 low 37)

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

• Cloudy with rain this AM, isolated showers and a bit cooler this afternoon (0.35 in. of rain possible), evening coastal rain likely (70%) and rain late tonight while inland rain tonight (possibly heavy at times late, 0.65 in. of rain possible) tonight, windy (Wind:SE 5-10 mph increasing to S 20-30 mph gusts to 45 mph late at night),
• Mostly cloudy and just a bit cooler with rain Thursday AM, rain (0.50 in. of rain possible) with a slight (20%) chance of thunderstorms in the afternoon and evening, coastal showers with a slight (20%) chance of thunderstorms late Thursday night while showers inland (0,65 in. of rain possible) and Friday, evening showers, then showers likely (70%) late Friday night.
• highs 59-54 lows 49-45.
• Mostly cloudy with rain, possibly heavy at times, Saturday and Saturday night,
• Rain Sunday, rain likely (70%) Sunday night,
• Then cloudy with a good (50%) chance of showers Monday through Tuesday.
• highs 54-50 warming to 53 Tuesday lows 44-42. (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 AM, rain and snow showers likely (70%) with a slight (20%) chance of thunderstorms and cooler this afternoon (0.50 in. of rain possible, 1 in. of snow possible) and breezy (Wind: SW 10-20 mph gusts to 40 mph decreasing 25 mph this afternoon), partly cloudy with a good (50%) chance of evening rain and snow, rain and snow and colder tonight (1.00 in. of rain possible, 3-7 in. of snow possible) and breezy (Wind: S 10-15 mph shifting SW 15-25 mph late),
• AM rain and snow, rain and snow showers Thursday afternoon (0.75 in. of rain possible, 3-7 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, then rain and snow showers and breezy at night.
• snow level 4,500 ft. this afternoon, 5,000 ft. tonight, 4,000 ft. Thursday, 3,500 ft. Thursday night, 3,000 ft. Friday, then 3,500 ft. Friday night.
• highs 42-33 lows 30-24.
• Mostly cloudy with rain and snow Saturday and Saturday night,
• Rain and snow showers Sunday, snow showers likely (70%) Sunday night through Monday night,
• Then mostly cloudy with a good (50%) chance of rain and snow showers Tuesday.
• snow level 3,500 ft. Saturday, 5,000 ft. Saturday night, 4,000 ft. Sunday, at the surface Sunday night and Monday, 2,500 ft. Monday night, then 3,000 ft. Tuesday.
• highs 37-34 lows 25-23.

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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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