Here is my new 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. It looks like a parade of storms. Here is a  frontal system following on the heels of the last one 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 5 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 39 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 6 PM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON, AND 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 8PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND FOR WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A WIND ADVISORY IS IN EFFECT UNTIL 8 PM TODAY FOR THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, AND THE SOUTH WILLAMETTE VALLEY.
• A COASTAL FLOOD ADVISORY IS IN EFFECT FROM 8 AM UNTIL 1 PM TUESDAY AND WEDNESDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A COASTAL FLOOD WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING FOR THE NORTH OREGON COAST AND THE SOUTH OREGON COAST.
• A HIGH WIND WATCH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY 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:

• Cloudy with rain (0.50 in. of rain possible) tonight and breezy (Wind: S 15-25 mph gusts to 35 mph this evening, decreasing to S 10-15 mph gusts to 25 mph late tonight),
• Mostly cloudy with rain likely (70%) and a bit warmer Tuesday afternoon (0.50 in. of rain possible) and windy (Wind: S 15-20 mph increasing to S 20-30 mph gusts to 45 mph), rain (possibly heavy at times, 1.5 in. of rain possible) and windy (Wind: S 20-30 mph gusts to 45 mph late) late Tuesday night,
• Mostly cloudy Wednesday with AM showers, a bit cooler with a good (50%) chance of afternoon showers (0.40 in. of rain possible) and windy (Wind: SW 20-30 mph gusts to 40 mph decreasing to SW 10-15 mph in the afternoon), rain (possibly heavy at times, 0.85 in. of rain possible) and colder Wednesday night,
• Mostly cloudy and a bit cooler with showers and breezy Thursday, then showers likely (70%) Thursday night.
• lows 54-39 highs 62-48.
• Mostly cloudy with showers likely (70%) Friday, cloudy with a good (50%) of showers Friday night,
• Rain likely (70%) Saturday and Saturday night,
• Cloudy with a good (50%) chance of showers Sunday, then mostly cloudy with a good (50%) chance of showers Sunday night and Monday.
• highs near 48 lows 40-36. (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 rain tonight (0.40 in. of rain possible),
• Cloudy and just a bit warmer with a good (50%) chance of rain Tuesday, (under 0.10 in. of rain possible) rain likely (70%) in the evening, rain late Tuesday night (0.50 in. of rain possible) and breezy (Wind: S 15-25 mph),
• Cloudy with AM rain, a good (50%) chance of rain and a bit cooler Wednesday afternoon (0.35 in. of rain possible) and breezy (Wind: S 15-25 mph gusts to 40 mph shifting to SW 10-15 mph in the afternoon), rain (possibly heavy at times, 0.70 in. of rain possible) late Wednesday night,
• Then mostly cloudy with showers, breezy and cooler Thursday and Thursday night.
• lows 55-40 highs 62-50.
• Showers likely (70%) and a bit cooler Friday and at night,
• Mostly cloudy with rain likely (70%) Saturday, rain at night,
• Mostly cloudy with rain and snow likely (70%) Sunday, a good (50%) chance of rain and snow showers Sunday night,
• Then cloudy with a good (50%) chance of showers Monday.
• 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:

• Mostly cloudy with rain tonight (0.85 in. of rain possible) and breezy (Wind: SW 15-25 mph),
• Cloudy with coastal rain likely (60%) Tuesday while AM inland rain likely (70%) and a good (50%) chance of inland rain in the afternoon (0.20 in. of rain possible) and windy (Wind: S 25-35 mph at the shore while S 15-25 mph inland), rain likely (70%) in the evening, rain (possibly heavy at times, 0.95 in. of rain possible) late Tuesday night and windy (Wind: SW 25-35 mph at the shore while S 15-25 mph inland),
• Cloudy with rain Wednesday AM, a good (50%) chance of rain and a bit cooler in the afternoon (0.35 in. of rain possible) and windy (Wind: SW 25-35 mph gusts to 50 mph decreasing to SW 10-15 mph in the afternoon), then rain Wednesday night (0.90 in. of rain possible) and breezy (Wind: SE 10-15 mph increasing to S 20-30 mph late at night at the shore while SE 5-10 mph inland shifting S 10-20 mph late),
• Mostly cloudy and just a bit cooler with AM rain, showers and a slight (20%) chance of thunderstorms and breezy Thursday afternoon and windy, then showers and a slight (20%) chance of thunderstormsThursday night.
• lows 56-44 highs 62-52.
• Showers and a slight (20%) chance of thunderstorms Friday, showers likely (70%) Friday night,
• Rain likely (70%) Saturday, rain at night,
• Rain likely (70%) Sunday, then  cloudy with a good (50%) chance of showers Sunday night and Monday.
• 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 (1 in. of rain possible) tonight,
• Rain (0.25 in. of rain possible) likely (70%) and a bit warmer Tuesday and breezy (S 15-20 mph gusts to 40 mph), rain (1.00 in. of rain possible) and windy (Wind: S 20-30 mph gusts to 50 mph) Tuesday night,
• Mostly cloudy with AM showers, rain and snow showers likely (70%) and cooler in the afternoon and windy (Wind: SW 20-30 mph gusts to 50 mph decreasing to SW 10-15 mph guests to 25 mph in the afternoon), rain and colder Wednesday night,
• Rain and snow showers, breezy and cooler Thursday, then rain and snow showers at night.
• snow level above 8,000 ft. tonight, 8,000 ft. Tuesday, 8,000 ft. falling to 7,500 ft. Tuesday night, 6,000 ft. falling to  4,500 ft. Wednesday afternoon, 6,500 ft. Wednesday night, 4,000 ft. Thursday, then 3,000 ft. Thursday night.
• lows 42-24 highs 48-36.
• Mostly cloudy with snow showers and cooler Friday, rain and snow showers likely (70%) Friday night and Saturday (a bit warmer), rain and snow Saturday night,
• Snow showers likely (70%) Sunday and at night,
• Then rain and snow showers likely (70%) Monday.
• snow level 2,500 ft. Friday, 3,000 ft. Friday night and Saturday, 4,000 ft. Saturday night, then 2,500 ft. Sunday through Monday.
• 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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