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. 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 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 79 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 24 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%) and a bit warmer this afternoon (0.25 in. of rain possible) and windy (Wind: S 20-30 mph gusts to 40 mph), rain likely (70%) this evening, rain (possibly heavy at times, 1.5 in. of rain possible) and windy (Wind: SW 20-30 mph gusts to 45 mph late) late tonight,
• Mostly cloudy Wednesday with AM showers, a mix of clouds and sun and a bit cooler with a good (50%) chance of afternoon showers (0.25 in. of rain possible), rain (possibly heavy at times, 0.85 in. of rain possible) and colder Wednesday night,
• Mostly cloudy with AM rain, a bit cooler with showers and breezy (Wind: SW 15-20 mph gusts to 30 mph)Thursday afternoon, then showers likely (70%) Thursday night.
• highs 62-48 lows 52-39.
• 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:

• Cloudy and just a bit warmer with a good (50%) chance of rain today (under 0.10 in. of rain possible), a good (50%) chance of rain this evening, rain late tonight (0.50 in. of rain possible) and breezy (Wind: SW 15-25 mph),
• Cloudy with AM rain, a good (50%) chance of showers and a bit cooler Wednesday afternoon (0.35 in. of rain possible) and breezy (Wind: SW 10-20 mph gusts to 35 mph decreasing to SW 5-10 mph in the afternoon), rain (possibly heavy at times, 0.70 in. of rain possible) late Wednesday night,
• Then mostly cloudy with rain (snow level 3,500 ft.), breezy and cooler Thursday (SW 15-20 mph gusts to 35 mph), evening rain, then showers late Thursday night.
• highs 62-50 lows 53-40.
• Showers likely (70%) in the AM, showers likely and a slight (20%) chance of thunderstorms and a bit cooler Friday afternoon, showers likely (70%) 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:

• Cloudy with coastal rain today while AM inland rain likely (70%) and inland rain this afternoon (0.20 in. of rain possible) and breezy (Wind: S 15-25 mph gusts to 40 mph inland), rain likely (70%) this evening, rain (possibly heavy at times, 0.95 in. of rain possible) late tonight and very windy (Wind: SW 30-45 mph at the shore while S 15-25 mph inland),
• Cloudy with rain Wednesday AM, a slight (20%) chance of rain and a bit cooler in the afternoon (0.35 in. of rain possible) and breezy (Wind: SW 15-25 mph decreasing to SW 10-15 mph late AM and in the afternoon), then rain (possibly heavy at times late) Wednesday night (0.90 in. of rain possible),
• Mostly cloudy and just a bit cooler with AM coastal rain and rain with a slight (20%) chance of afternoon thunderstorms while rain inland, and breezy (Wind: SW 15-25 mph AM gusts to 40 mph), rain and a slight (20%) chance of evening thunderstorms, then showers and a slight (20%) chance of thunderstorms late Thursday night.
• highs 62-52 lows 54-44.
• Showers and a slight (20%) chance of thunderstorms Friday, showers likely (70%) Friday night,
• Mostly cloudy with 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:

• Rain (0.10 in. of rain possible) and a bit warmer today and breezy (SW 20-30 mph gusts to 40 mph increasing to 55 mph), rain (0.25 in. of rain possible) and windy (Wind: SW 35-45 mph gusts to 75 mph) tonight (1.00 in. of rain possible),
• Mostly cloudy with showers Wednesday AM, rain and snow showers and cooler in the afternoon (0.75 in. of rain possible. 1 in. of snow possible) and breezy (Wind: SW 15-25 mph gusts to 50 mph decreasing to SW 10-15 mph gusts to 30 mph in the afternoon), rain and snow and colder Wednesday night,
• Rain and snow in the AM, rain and snow showers, breezy and cooler Thursday afternoon (SW 15-25 mph gusts to 40 mph), then rain and snow showers 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, then 3,500 ft. Thursday night.
• highs 48-36 lows 38-24.
• 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 mostly cloudy with 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,3,000 ft. Sunday and Sunday night, then 2,500 ft. 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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