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 moves through, 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 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 47 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 12 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 UNTIL 4 PM TODAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WINTER STORM WARNING IS IN EFFECT 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, THE CASCADES IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.
• A WINTER STORM WARNING IS IN EFFECT FROM 4 PM THIS AFTERNOON THROUGH 4 PM THURSDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, .
• 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 WEATHER ADVISORY IS IN EFFECT FROM 4 PM THIS AFTERNOON UNTIL 4 PM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM THURSDAY ABOVE 2,000 FT.  FOR CENTRAL DOUGLAS COUNTY, THE DOUGLAS COUNTY FOOTHILLS,  JACKSON COUNTY, AND THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE 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 TONIGHT UNTIL NOON THURSDAY FOR CENTRAL AND EASTERN OREGON.
• 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.
• A FLOOD WARNING CONTINUES FOR  THE SOUTH FORK OF THE COQUILLE RIVER AT COQUILLE IN COOS 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 showers and a bit cooler this afternoon (0.50 in. of rain possible), showers tonight (0.50 in. of rain possible, snow level 1,000 ft. no accumulation expected),
• Cloudy and a bit cooler with morning showers Thursday (0.25 in. of rain possible, snow level 1,000 ft. no accumulation expected), a good (50%) chance of showers (0.10 in. of rain possible) Thursday night (Christmas Eve),
• A mix of clouds and sun with a slight (20%) chance of showers Friday (Christmas Day), partly cloudy with patchy fog and freezing fog late at night.
• highs 45-40 lows 34-27.
• Areas of AM fog and freezing fog, partly cloudy and a bit cooler Saturday and Saturday night,
• Mostly cloudy and a bit warmer Sunday, cloudy with rain becoming likely (70%) 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 showers Tuesday.
• highs 40-42 lows 30-35. (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:

• Rain and snow showers with a slight (20%) chance of rain and snow showers and a bit cooler this afternoon and evening (0.30 in. of rain possible 1-2 in. of snow possible, snow level 1,000 ft. rising to 1,500 ft.), rain and snow showers tonight (0.35 in. of rain possible, 3-5 in. of snow possible 1,500 ft. falling to 1,000 ft., 2-3 in. of snow possible, 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 with a slight (20%) chance of thunderstorms and a bit cooler Thursday (0.15 in. of rain possible, snow level 1,000 ft.), a (40%) chance of rain and snow showers (0.15 in. of rain possible, snow level 800 ft. falling to 3o0 ft. late) Thursday night (Christmas Eve),
• Mostly cloudy with a (30%) chance of rain and snow showers (snow level 300 ft. rising to 1,000 ft.) Friday (Christmas Day), mostly cloudy in the evening, partly cloudy with patchy fog and freezing fog late Friday night.
• highs 46-42 lows 35-30.
• Partly cloudy with areas of fog and freezing fog Saturday AM, mostly cloudy and a bit cooler 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 (40%) chance of rain Sunday afternoon, evening rain likely (70%), rain and snow likely (70%) late Sunday night,
• Cloudy and a bit warmer with a (40%) 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 rain and snow Tuesday.
• 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 coastal showers and a bit cooler with a slight (20%) chance of thunderstorms this afternoon while inland showers and snow showers with a slight (20%) chance of morning thunderstorms, showers and a slight (20%) chance of thunderstorms this afternoon (0.35 in. of rain possible), coastal showers with a slight (20%) chance of thunderstorms while evening inland evening rain with a slight (20%) chance of thunderstorms, showers and snow showers likely with a slight (20%) chance of thunderstorms inland late tonight (0.55 in. of rain possible, 1 in. of snow possible, snow level 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 (0.20 in. of rain possible) 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 an just a bit warmer in the afternoon (snow level 1,500 ft.), coastal showers likely (60%) with inland rain and snow showers (0.25 in. of rain possible) likely (70%) late at night (Christmas Eve),
• Mostly cloudy with a good (50%) 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.
• highs 50-46 warming to 48 Friday lows 42-35.
• Areas of AM fog and freezing fog, mostly cloudy Saturday afternoon, a slight (20%) chance of rain late Saturday night,
• Mostly cloudy with a good (50%) chance of rain Sunday and at night,
• Cloudy with a good (50%) chance of showers Monday, mostly cloudy with a (30%) chance of evening showers, a slight (20%) chance of showers late Monday night,
• Then mostly cloudy with a (40%) chance of rain Tuesday.
• highs 48-52 lows 37-42. (seasonal averages high 51 low 40).

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Forecast for the Cascades in Lane County:

• Cloudy with AM snow showers, a bit cooler with snow this afternoon (4-8 in. of snow possible), snow showers and cold tonight (3-6 in. of snow possible),
• Mostly cloudy and a bit cooler with snow showers Thursday (1-3 in. of snow possible), a good (50%) chance of snow showers and cold Thursday night (Christmas Eve),
• A (40%) chance of snow showers Friday (Christmas Day), partly cloudy with a slight (20%) chance of isolated evening snow flurries, then just partly cloudy Friday night.
• snow level at the surface today through Friday night.
• highs 29-25 lows 20-22 cooling to 13 Friday night.
• Mostly sunny Saturday, partly cloudy Saturday night,
• A mix of clouds and sun and a bit warmer with a slight (20%) 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 showers 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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