Here is my new weekly weather quiz question. What is “Alluvium?”  Please remember to post your answer at the bottom of this page. An email will not suffice. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

________________

An upper level low pressure trough (Shaded “U” shape area with blue arrows) is sending more storms our way.  A frontal system will push into the Pacific Northwest today as you can see on the days 1,2 & 3 graphic with the warm front first followed by a cold front. The graphic for days 3-7 shows the typical parade of storms that bring our Autumn rain. There will be continued snow on the Cascade Passes but snow levels will continue to rise and fall. Willamette Pass has indicated they are open starting today. Hoodoo ski area plans to open Saturday December 3rd. Mt. Ashland announced Wednesday that they are starting their ski season early- this Sunday December 4th. It looks like the ski season has a good chance of starting reasonably early this year. For mountain snow conditions check out their websites or give them a call.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

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

________________

Home Wood Heating Advisory:

Eugene-Springfield: YELLOW – Caution is Advised

Oakridge: YELLOW – Caution is Advised

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

Advisories:

• A BEACH HAZARD STATEMENT IS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST. THAT MEANS LARGE BREAKERS ARE EXPECTED MOST OF THE DAY ON SATURDAY WITH HIGHEST POTENTIAL FOR DANGEROUS WAVE RUNUP ON BEACHES LATE SATURDAY AFTERNOON. JETTIES AND SURF ZONES WILL BE ESPECIALLY DANGEROUS.
• A Permanent Health Advisory remains for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.
• A Blue-Green Algae Health Advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.

________________

 

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a good (50%) chance of rain late this afternoon (under 0.10 in. of rain possible), evening rain likely (70%), a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Saturday (under 0.10 in. of rain possible), cloudy with a slight (20%) chance of evening rain, rain likely (70%) late Saturday night (0.10 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Sunday, evening showers likely (70%), then rain or snow showers likely (70%) Sunday night.
• highs 48-52 cooling back to 48 Sunday lows 43-45 cooling to 36 Sunday night.
• Cloudy and much cooler with rain or snow Monday (snow level 1,000 ft.), rain or snow showers likely (70%) at night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain or snow showers Tuesday and Tuesday night,
• A (40%) chance of snow and rain and a bit warmer Wednesday, then mostly cloudy with rain likely (70%) Wednesday night and Thursday (a bit warmer).
• highs 40-45 lows 32-29 warming to 40 Tuesday night. (seasonal averages high 47 low 35)

 

_____________________

 

Forecast for Roseburg:

• Mostly cloudy and a bit cooler with a slight (20%) chance of rain this afternoon, cloudy with a (40%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers and a bit warmer Saturday, a good (50%) chance of rain Saturday night,
• Cloudy with rain and a bit cooler Sunday, then rain and snow showers likely (70%) and colder at night.
• highs 47-55 cooling to 49 Sunday lows 43-45 cooling to 36 Sunday night.
• Mostly cloudy with rain and snow showers and a bit cooler Monday and at night,
• Mostly cloudy and a bit cooler with a (40%) chance of rain and snow showers Tuesday a slight (20%) chance of rain and snow showers at night,
• A (40%) chance of rain and snow Wednesday AM, a (30%) chance of rain and a bit warmer Wednesday afternoon, evening rain and snow likely (70%), then rain likely (70%) late Wednesday night and Thursday (a bit warmer).
• highs 44-40 warming to 49 Thursday lows 35-28 warming to 43 Wednesday night (seasonal averages high 49 low 38)

 

________________

 

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy and a bit warmer with a slight (20%) chance of rain this afternoon (under 0.10 in. of rain possible), cloudy with a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with a slight (20%) chance of coastal showers while a slight (20%) chance of inland AM showers Saturday (under 0.10 in. of rain possible), a slight (20%) chance of evening coastal rain and coastal rain likely (70%) late at night while a good (50%) chance of inland rain Saturday night (under 0.10 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Sunday, evening showers likely (70%), then showers likely (70%) late Sunday night.
• highs 55-52 lows 46-40.
• Mostly cloudy with rain and snow showers and a bit cooler Monday and Monday night,
• Mostly cloudy and a bit cooler with a (40%) chance of showers Tuesday, a slight (20%) chance of evening showers, a slight (20%) chance of rain and snow showers late Tuesday night,
• Mostly cloudy and a bit warmer with a (30%) chance of AM rain and snow, a good (50%) chance of rain Wednesday afternoon, rain likely (70%) at night,
• Then cloudy and a bit warmer with rain Thursday.
• highs 49-55 lows 38-47. (seasonal averages high 52 low 40)

 

________________

 

Forecast for the Cascades in Lane County:

• Cloudy and a bit warmer with a good (50%) chance of rain and snow this afternoon (under 0.10 in. of rain possible), evening rain likely (70%), rain or snow likely (70%) late Friday night (under 0.10 in. of rain possible),
• A good (40%) chance of rain and snow showers Saturday (under 0.10 in. of rain possible), cloudy with a slight (20%) chance of evening rain or snow, good (50%) chance of rain or snow late at night,
• Mostly cloudy with rain and snow and a bit cooler Sunday, then snow showers likely (70%) Sunday night.
• snow level 3,000 ft. today, 6,000 ft. tonight, 4,500 ft. Saturday and  Saturday night, 5,500 ft. falling to 4,500 ft. Sunday, then at the surface Sunday night.
• highs 35-38 cooling back to 35 Sunday night lows 34-20.
• Mostly cloudy with snow Monday, cloudy with snow showers at night,
• Mostly cloudy and a bit cooler with a (30%) chance of snow showers Tuesday, a slight (20%) chance of snow showers Tuesday night,
• A bit warmer with a (40%) chance of snow Wednesday, snow likely (70%) at night,
• Then snow and rain likely (70%) Thursday.
• snow level at the surface Monday through Wednesday night, then 3,000 ft. Thursday.
• highs 26-24 warming to 33 Thursday lows 14-27.

________________

**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.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

__________