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.  The Days 1,2 & 3 graphic shows the frontal system will move through the Pacific Northwest Wednesday. The graphic for days 3-7 more frontal systems will march toward us on Friday and late Sunday. There will be continued snow on the Cascade Passes but snow levels will continue to rise and fall. So far Willamette Pass and Hoodoo ski areas are not open. I’d say they need two good snow storms to produce the approximately 30 inches of snow they need to open. Drive carefully! If you need to travel the passes remember to be prepared to chain-up if necessary.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

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

Cottage Grove: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

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

________________

Home Wood Heating Advisory:

Eugene-Springfield: Green – Burning is allowed.

Oakridge: Yellow – Green – Burning is allowed.

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

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

________________

Advisories:

• A HIGH SURF WARNING IS IN EFFECT UNTIL 1 AM TUESDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A HIGH SURF ADVISORY IS IN EFFECT UNTIL 10 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• 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 scattered evening showers, partly cloudy with a slight (20%) chance of showers and areas of fog late tonight (under 0.10 in. of rain possible),
• Areas of fog Tuesday AM, a mix of clouds and sun and a bit cooler in the afternoon, becoming mostly cloudy with a slight (20%) chance of evening rain, rain late Tuesday night (0.25 in. of rain possible),
• Mostly cloudy Wednesday AM with showers likely (70%), a good (50%) chance of afternoon showers and a bit warmer (0.10 in. of rain possible), a (40%) chance of showers Wednesday night (under 0.10 in. of rain possible),
• A slight (20%) chance of AM showers, mostly cloudy and a bit cooler Thursday afternoon, then just mostly cloudy with patchy fog at night.
• lows 42-44 cooling to 35 Thursday night highs 52-50.
• Areas of AM fog, mostly cloudy Friday afternoon, cloudy with a (30%) chance of rain Friday night,
• Mostly cloudy with a slight (20%) chance of rain Saturday, a (30%) chance of rain at night,
• Mostly cloudy and a bit cooler with rain likely (70%) Sunday, then cloudy with a good (50%) chance of showers Sunday night and Monday (a bit cooler).
• highs 50-45 lows 45-39. (seasonal averages high 48 low 36)

 

_____________________

 

Forecast for Roseburg:

• Mostly cloudy with a (30%) chance of scattered evening showers, a (30%) chance of isolated showers with areas of fog late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with areas of AM fog, partly cloudy Tuesday afternoon, a chance of rain in the evening, rain late at night (0.10 in. of rain possible),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of showers Wednesday afternoon (, under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. in the afternoon), mostly cloudy with a (20%) chance of showers Wednesday night (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late at night),
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, just mostly cloudy and a bit cooler Thursday afternoon, then just mostly cloudy with patchy fog late at night.
• lows 42-36 highs 50-48.
• Areas of AM fog,  mostly cloudy with a (30%) chance of rain Friday (a bit cooler Friday, a bit warmer Saturday) through Sunday, showers likely (70%) Sunday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Monday.
• highs 47-52 cooling to 46 Monday lows 42-44 cooling back to 42 Sunday night. (seasonal averages high 49 low 38)

 

________________

 

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

• Mostly cloudy with a (30%) chance of scattered evening showers, a (30%) chance of isolated showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy Tuesday AM, partly cloudy in the afternoon, becoming mostly cloudy coastal rain at night  while a good (50%) chance of evening inland rain and inland rain late Tuesday night (0.25 in. of rain possible),
• Mostly cloudy with AM rain likely (70%), a good (50%) chance of showers Wednesday afternoon (0.10 in. of rain possible), mostly cloudy with a (20%) chance of showers at night and Thursday AM, then mostly cloudy with patchy fog Thursday night.
• lows 45-40 highs near 55.
• Areas of AM fog with a slight (20%) chance of showers, mostly cloudy and a bit cooler with a (40%) chance of rain Friday afternoon through Sunday (a bit warmer Saturday), showers likely (70%) Sunday night (a bit warmer Sunday),
• Then mostly cloudy and a bit cooler with a good (50%) chance of showers Monday.
• highs 52-55 cooling to 50 Monday lows 40-46. (seasonal averages high 52 low 41)

 

________________

 

Forecast for the Cascades in Lane County:

• Mostly cloudy with evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers late tonight (0.10 in. of rain possible, 1-3 in. of snow possible),
• A slight (20%) chance of AM rain and snow showers, a mix of clouds and sun and a bit warmer Tuesday afternoon, becoming mostly cloudy with rain and snow late Tuesday night (0.25 in. of rain possible, 1-4 in. of snow possible),
• Mostly cloudy with rain and snow showers and a bit cooler Wednesday, cloudy with a good (50%) chance of rain and snow showers Wednesday night,
• Cloudy with a (30%) chance of AM snow showers and a slight (20%) chance of showers, a slight (20%) chance of rain and snow showers Thursday afternoon, then just partly cloudy at night.
• snow level 3,500 ft. tonight, 4,000 ft. Tuesday, 5,000 ft. Tuesday night, 3,000 ft. Wednesday through Thursday, free air freezing level 3,500 ft. Thursday night.
• lows 28-22 highs near 35.
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow Friday, becoming cloudy with a (40%) chance of rain and snow Friday  night through Saturday (a bit cooler Saturday) night,
• Mostly cloudy with a  good (50%) chance of rain and snow Sunday, rain and snow showers at night,
• Then snow showers likely (70%) and colder Monday.
• snow level 4,000 ft. Friday, 6,000 ft. Friday night , 5,500 ft. Saturday through Sunday, 4,000 ft. Sunday night, then at the surface Monday.
• highs 39-29 lows 33-23.

________________

**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.

__________