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 moisture from Hawaii, known as the Pineapple Express, which gives us the potential of very heavy rainfall amounts in the Valley and rising snow levels due to rain in the mountains. This could melt what little snow cover is currently in the mountains which would be a blow to the anticipated ski season, but snow levels will drop back down and more snow will fall. It looks like a parade of storms. Here is a  frontal system that pushed in today bringing more rain. Here is the continuing parade with another frontal system moving in Thursday and 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 4 AM WEDNESDAY FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.
• A HIGH WIND WARNING IS IN EFFECT  UNTIL 7 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
•  A HIGH WIND WARNING IS IN EFFECT UNTIL 1 PM WEDNESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH  THROUGH THURSDAY MORNING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY FOR THE GREATER PORTLAND METRO AREA, AND THE CENTRAL WILLAMETTE VALLEY.
• A COASTAL FLOOD WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WIND ADVISORY IS IN EFFECT UNTIL 1 PM WEDNESDAY FOR THE KLAMATH BASIN.
• A FLOOD WATCH IS IN EFFECT FROM 1 AM WEDNESDAY THROUGH FRIDAY MORNING FOR THE SOUTH CENTRAL  OREGON COAST AND THE CURRY COUNTY COAST, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM WEDNESDAY EVENING THROUGH LATE WEDNESDAY NIGHT FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL AND EASTERN LAKE 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 rain likely (70%) this evening, rain (possibly heavy at times late, 0.75 in. of rain possible) and windy (Wind: SW 20-30 mph gusts to 40 mph late) late tonight,
• Mostly cloudy Wednesday with AM showers, a good (50%) chance of afternoon showers (0.25 in. of rain possible), a (%) chance of evening rain, rain (possibly heavy at times late, 0.85 in. of rain possible) and colder Wednesday night,
• Mostly cloudy with AM rain, a bit cooler with showers and breezy (Wind: S 15-25 mph) Thursday afternoon, then showers likely (70%) Thursday night through Friday night.
• lows 52-42 highs 53-48.
• Mostly cloudy with rain likely (70%) Saturday and 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 rain likely (70%) this evening, rain late tonight (0.50 in. of rain possible) and breezy (Wind: SW 15-25 mph gusts to 40 mph),
• Cloudy with AM rain, showers likely (70%) and a bit cooler Wednesday afternoon (0.35 in. of rain possible), evening rain likely (70%), rain (possibly heavy at times, 0.70 in. of rain possible) late Wednesday night,
• Mostly cloudy with rain Thursday AM, showers in the afternoon and Thursday night,
• Then showers likely (70%) Friday and Friday night.
• lows 53-40 highs 62-50.
• Mostly cloudy with rain likely (70%) Saturday, rain at night and Sunday, evening rain likely (70%), rain and snow likely (70%) Sunday night,
• Cloudy with a good (50%) chance of rain and snow Monday, then cloudy with a (%) chance of showers Monday night and Tuesday.
• highs 48-46 lows 40-38. (seasonal averages high 48 low 37)

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

• Cloudy with coastal rain tonight while inland evening rain likely (70%) and rain late tonight (possibly heavy at times) and very windy (Wind: SW 30-45 mph at the shore while SW 15-25 mph inland),
• Cloudy with rain Wednesday AM, showers likely (70%) and a bit cooler in the afternoon (0.35 in. of rain possible) and breezy (Wind: SW 15-25 mph gusts to 40 mph decreasing to S 10-15 mph late AM and in the afternoon), evening coastal rain likely (70%) and rain late at night while inland rain Wednesday night (possibly heavy at times late, 0.90 in. of rain possible) Wednesday night, (coastal Wind:SE 5-10 mph increasing to SE 15-20 mph then SW 25-35 mph late at night),
• Mostly cloudy and just a bit cooler with rain Thursday AM, showers in the afternoon and evening, showers with a slight (20%) chance of thunderstorms late Thursday night and Friday, then showers likely (70%) Friday night.
• lows 54-44 highs 62-52.
• Mostly cloudy with rain likely (70%) Saturday, rain at night and Sunday,rain likely (70%) Sunday night,
• Then cloudy with a (%) chance of showers Monday through Tuesday.
• highs near 52 lows 44-42. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Cloudy with rain tonight (1.00 in. of rain possible) and windy (Wind: SW 35-50 mph gusts to 75 mph),
• Mostly cloudy with showers Wednesday AM, rain and snow showers and cooler in the afternoon (0.50 in. of rain possible, 1-4 in. of snow possible) and breezy (Wind: W 15-25 mph gusts to 50 mph decreasing to SW 5-15 mph gusts to 30 mph in the afternoon), a (%) chance of evening rain and snow, rain and snow and colder Wednesday night (0.75 in. of rain possible, 4-8 in. of snow possible) and breezy (Wind:S 10-15 mph gusts to 35 mph, increasing S 15-25 mph gusts to 45 mph late),
• AM rain and snow, rain and snow showers Thursday afternoon and breezy and cooler (SW 15-25 mph gusts to 45 mph), rain and snow showers at night,
• Snow showers Friday, then rain and snow showers likely (70%) at night.
• snow level above 8,000 ft. today and tonight, 6,500 ft. falling to  4,500 ft. Wednesday afternoon, 5,500 ft. Wednesday night, 4,500 ft. Thursday, 3,500 ft. Thursday night, 2,500 ft. Friday, then 3,000 ft. Friday night.
• lows 38-26 highs 39-33.
• Mostly cloudy with rain and snow likely (70%) Saturday, rain and snow Saturday night,
• Rain and snow showers Sunday, snow showers likely (70%) at night,
• Mostly cloudy with snow showers likely (70%) Monday and Monday night,
• Then mostly cloudy with a good (50%) chance of rain and snow showers Tuesday.
• snow level 3,000 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 32-36 cooling to 34 Sunday and Monday lows near 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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