Here is my weekly weather quiz question. What is “An Arroyo?” The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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Another Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) is moving away as an Upper Level High Pressure Ridge (“Shaded “Arch” shape with blue arrows on previous graphic) takes over today and into the weekend. The graphic for days 1-3 shows the next front that is headed for the Pacific Northwest Saturday. There why there will be a break today into the weekend. The graphic for days 3-7 shows the next complex frontal system that will be moving into Oregon through next Wednesday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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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.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A BEACH HAZARDS STATEMENT IS IN EFFECT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST INCLUDING ALL OF THE BEACHES ALONG THE CURRY, COOS, AND DOUGLAS COUNTY COASTS FROM SATURDAY AFTERNOON THROUGH SUNDAY MORNING . THE SNEAKER WAVES THREAT WILL INCREASE SATURDAY AFTERNOON AND EVENING AND CONTINUE INTO EARLY SUNDAY MORNING AS A LONG PERIOD WEST SWELL IMPACTS THE COAST.
• A FLOOD WARNING IS IN EFFECT FOR THE COLUMBIA RIVER AT VANCOUVER AFFECTING MULTNOMAH COUNTY.
• A Permanent Health Advisory remains in effect 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.

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

• Partly cloudy and a bit warmer this afternoon and evening, mostly cloudy late tonight,
• Mostly cloudy with a (40%) chance of rain Saturday AM, just a slight (20%) chance of afternoon rain (under 0.10 in. of rain possible), mostly cloudy in the evening, partly cloudy Saturday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of Sunday, then partly cloudy Sunday night.
• highs 60-56 lows 43-35.
• Partly cloudy and a bit warmer Monday and Monday night,
• A mix of clouds and sun with a slight (20%) chance of rain and a bit warmer Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night and Wednesday, a (40%) chance of rain Wednesday night,
• Then rain likely (70%) and a bit cooler Thursday.
• highs 58-65 cooling to 59 Thursday lows 36-46. (seasonal averages high 58 low 38)

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Eugene-Springfield Pollen Count:

Grass………. Low (0)

Trees………. Very High (1111)

Last Counted: 3/29/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly sunny and a bit warmer this afternoon, becoming mostly cloudy tonight,
• Cloudy with a slight (20%) chance of AM rain, a slight (20%) chance of showers and a bit warmer Saturday afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening showers, becoming partly cloudy at night,
• Partly cloudy and a bit cooler Sunday, mostly cloudy in the evening, then partly cloudy Sunday night.
• highs 58-60 cooling back to 58 Sunday lows 42-35.
• Mostly sunny and a bit warmer Monday, mostly clear Monday night,
• Mostly cloudy and a bit warmer Tuesday and at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday, cloudy with a (30%) chance of rain Wednesday night,
• Then mostly cloudy with a good (50%) chance of rain and cooler Thursday.
• highs 60-67 cooling to 58 Thursday lows 36-47. (seasonal averages high 59 low 40)

 

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

• Mostly cloudy and a bit warmer this afternoon, mostly cloudy tonight,
• Cloudy with a slight (20%) chance of  AM rain, a slight (20%) chance of showers Saturday afternoon (under 0.10 in. of rain possible), mostly cloudy in the evening with a slight (20%) chance of coastal showers, partly cloudy Saturday night,
• Sunny Sunday AM, partly cloudy in the afternoon, mostly cloudy in the evening, then mostly clear late Sunday night.
• highs near 56 lows 46-42.
• Mostly sunny Monday, mostly clear Monday night,
• Mostly cloudy and a bit warmer Tuesday and at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday, cloudy with a (40%) chance of rain Wednesday night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of rain Thursday.
• highs 55-62 cooling to 56 Thursday lows 42-49 cooling to 47 Wednesday night. (seasonal averages high 54 low 42)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer this afternoon, partly cloudy tonight,
• Mostly cloudy with a good (50%) chance of AM rain, a bit warmer with a good (50%) chance of rain Saturday afternoon, a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Saturday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain and snow showers Sunday, mostly cloudy in the evening, then partly cloudy late Sunday night .
• free air freezing level 4,000 ft. rising to 9,000 ft. this afternoon, 9,000 ft. falling to 8,000 ft. tonight, snow level 8,000 ft. Saturday, 7,500 ft. falling to 6,000 ft. Saturday night, then 4,500 ft. Sunday and Sunday night.
• highs 44-46 cooling back to 46 Sunday lows 30-18.
• Partly cloudy and a bit warmer Monday and Monday night,
• A mix of clouds and sun Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday, cloudy with a good (50%) chance of rain Wednesday night,
• Then mostly cloudy and a bit cooler with rain likely (70%) Thursday.
• free air freezing level 5,000 ft. rising t0 5,500 ft. Monday, 7,000 ft. falling to 5,000 ft. Monday night, 6,500 ft. Tuesday, 9,000 ft. Tuesday night, snow level 8,000 ft. Wednesday, above 8,000 ft. Wednesday night,  then 7,500 ft. Thursday.
• highs 46-50 cooling to 45 Thursday lows 29-34.

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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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