Here is my new weekly weather quiz question. What is “Active Conservation Storage?” 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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Another upper level low is moving through the Pacific Northwest. A powerful frontal system slammed into Oregon Monday bringing rain and high winds. There was significant tree and power line damage in scattered areas. The next frontal system is moving through now, but it isn’t as strong. Local skiers are still celebrating. The mountains have a lot of new snow and Willamette Pass, Hoodoo and Mt. Ashland are all open, with night skiing starting today at Hoodoo. Check their websites for updates.

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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 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A COASTAL FLOOD WARNING IS IN EFFECT FROM 8AM UNTIL 4 PM WEDNESDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WINTER STORM WARNING IS IN EFFECT FROM 6 PM TONIGHT THROUGH 4 AM THURSDAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF RANGE OF NORTHWEST OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN OREGON CASCADES, AND THE CASCADES OF LANE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TONIGHT THROUGH 10 PM WEDNESDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM THURSDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• A WINTER STORM WATCH IS IN EFFECT  FROM WEDNESDAY EVENING THROUGH THURSDAY MORNING FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY,
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 PM TONIGHT THROUGH 5 PM WEDNESDAY.
• A HIGH SURF ADVISORY IS IN EFFECT FROM 6 PM TONIGHT UNTIL 8 AM WEDNESDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A HIGH SURF ADVISORY IS IN EFFECT UNTIL 4 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A FLOOD WARNING CONTINUES FOR THE PUDDING RIVER AT AURORA AND THE TUALATIN RIVER AT FARMINGTON.
• A FLOOD WARNING CONTINUES FOR  THE SOUTH FORK OF THE COQUILLE RIVER AT COQUILLE IN COOS COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM WEDNESDAY FOR CENTRAL DOUGLAS COUNTY, THE DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON THURSDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM WEDNESDAY UNTIL NOON THURSDAY FOR CENTRAL AND EASTERN OREGON.
• 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 this evening, showers late tonight (0.25 in. of rain possible) and breezy (Wind: SW 15-25 mph),
• AM showers, mostly cloudy rain and a bit cooler Wednesday afternoon (0.50 in. of rain possible), showers Wednesday night (0.50 in. of rain possible),
• Cloudy and a bit cooler with a showers likely (70%) Thursday, a good (50%) chance of rain and snow showers (snow level 1,000 ft.) Thursday night (Christmas Eve),
• Mostly cloudy with a slight (20%) chance of rain and snow showers (snow level 1,000 ft.) Friday (Christmas Day), partly cloudy with patchy fog late at night.
• lows 37-32 highs 45-40.
• Patchy AM fog, partly cloudy Saturday and Saturday night,
• Mostly cloudy and a bit warmer with a (40%) chance of rain Sunday, rain at night,
• Mostly cloudy with a (40%) chance of showers Monday, cloudy with a slight (20%) chance of showers Monday night,
• Then mostly cloudy with a (40%) chance of rain Tuesday.
• highs 40-44 lows 29-35. (seasonal averages high 45 low 33)

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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 showers, rain and snow showers late tonight (0.20 in. of rain possible, 1-2 in. of snow possible, snow level 3,000 ft. falling to 2,500 ft. late at night),
• Rain and snow showers and a bit cooler Wednesday (3-4 in. of snow possible, snow level 2,000 ft.), rain and snow showers Wednesday night (0.25 in. of rain possible, 3-5 in. of snow possible above 1,500 ft. 2-3 in. of snow possible below 1,500 ft, snow level 1,500 ft. falling to 800 ft. late at night),
• Mostly cloudy with AM rain and snow showers, rain and snow showers showers a bit cooler Thursday with a slight (20%) chance of thunderstorms in the afternoon (snow level 1,000 ft.), rain and snow showers likely (70%) Thursday night (Christmas Eve),
• Mostly cloudy with a (30%) chance of rain and snow showers Friday (Christmas Day), mostly cloudy in the evening, partly cloudy with patchy fog and freezing fog late Friday night.
• lows 39-32 highs 48-42.
• Partly cloudy with areas of fog and freezing fog Saturday AM, mostly cloudy in the afternoon and evening, partly cloudy with a slight (20%) chance of rain Saturday night,
• Mostly cloudy and a bit warmer with a (40%) chance of AM rain and snow, a (%) chance of rain Sunday afternoon, evening rain likely (70%), rain and snow likely (70%) late Sunday night,
• Cloudy with a (%) chance of rain and snow Monday, a slight (20%) chance of evening showers,  a slight (20%) chance of rain late Monday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow, then a slight (20%) chance of rain Tuesday afternoon.
• highs 42-38 warming to 44 Sunday and Monday lows 30-37. (seasonal averages high 47 low 36)

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

• Mostly cloudy with showers tonight (0.20 in. of rain possible) and windy (Wind: W 20-30 mph decreasing to W 10-20 mph at night),
• Mostly cloudy with showers and a bit cooler Wednesday afternoon (0.35 in. of rain possible), coastal showers with a slight (20%) chance of thunderstorms while evening inland evening showers and rain and snow showers likely with a slight (20%) chance of thunderstorms inland late at night (1 in. of snow possible, snow level 2,000 ft. falling to 1,500 ft. late at night),
• Mostly cloudy with showers and a slight (20%) chance of thunderstorms Thursday AM, showers likely (70%) and a bit cooler Thursday afternoon with a slight (20%) chance of coastal showers and thunderstorms while showers and snow showers likely (70%) inland with a slight (20%) chance of thunderstorms in the AM and showers and snow showers likely (70%) with a slight (20%) chance of inland thunderstorms in the afternoon (snow level 1,500 ft.), coastal showers likely (60%) with inland rain and snow showers likely (70%) late at night (Christmas Eve),
• Mostly cloudy with a (40%) chance of showers and a bit warmer Friday (Christmas Day),partly cloudy in the evening, then mostly cloudy with patchy fog and freezing fog late Friday night.
• lows 42-37 highs 50-46.
• Areas of AM fog and freezing fog, mostly cloudy Saturday, a slight (20%) chance of rain Saturday night,
• Mostly cloudy with rain likely (70%) Sunday and at night,
• Cloudy with a (%) chance of showers Monday, mostly cloudy with a (%) chance of evening showers, a slight (20%) chance of rain late Monday night,
• Then mostly cloudy with a (%) chance of showers Tuesday.
• highs near 48 lows 37-42. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Cloudy with rain and snow this evening, snow showers late tonight (1.00 in. of rain possible, 6-10 in. of snow possible) and breezy (Wind: W 15-25 mph gusts to 40 mph),
• Cloudy with AM snow showers, a bit cooler with snow Wednesday afternoon (5-9 in. of snow possible), snow showers and cold Wednesday night (4-7 in. of snow possible),
• Mostly cloudy and a bit cooler with snow showers likely (70%) Thursday, snow showers and cold Thursday night (Christmas Eve),
• A (%) chance of AM snow showers, a slight (20%) chance of snow showers Friday afternoon (Christmas Day), partly cloudy with a slight (20%) chance of isolated evening snow showers, then just partly cloudy Friday night.
• snow level at the surface tonight through Friday night.
• lows 22-20 warming back to 22 Friday night highs 29-25.
• Just partly cloudy and a bit warmer Saturday and Saturday night,
• Mostly cloudy and a bit warmer with a (30%) chance of snow Sunday, rain and snow likely (70%) at night,
• Then cloudy and just a bit cooler with a (40%) chance of snow showers Monday, cloudy with a slight (20%) chance of snow showers Monday night,
• Then mostly cloudy with a (30%) chance of rain and snow Tuesday.
• free air freezing level at the surface Saturday, 4,000 ft. Saturday night, snow level 2,500 ft. Sunday, 3,000 ft. Sunday night, 2,500 ft. Monday, at the surface Monday night, then 3,000 ft. Tuesday.
• highs 24-32 cooling to 30 Monday lows 26-18.

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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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