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 Friday 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 Friday 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 6 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 1 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 MORNING 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 WIND ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR CENTRAL AND EASTERN LAKE COUNTY.
• 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:

• Mostly cloudy with a slight (20%) chance of isolated evening showers, partly cloudy with patchy fog late tonight and Friday AM, partly cloudy and a bit warmer in the afternoon, and evening, mostly cloudy late Friday night,
• Mostly cloudy with a good (50%) chance of rain Saturday (under 0.10 in. of rain possible), just mostly cloudy Saturday night,
• A mix of clouds and sun and a bit cooler Sunday, then partly cloudy Sunday night.
• lows 37-43 cooling to 35 Monday night highs 60-57.
• Partly cloudy Monday and Monday night,
• A mix of clouds and sun with a slight (20%) chance of showers and a bit warmer Tuesday, mostly cloudy with a slight (20%) chance of showers Tuesday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Wednesday, a (40%) chance of rain Wednesday night,
• Then rain likely (70%) Thursday.
• highs 58-62 lows 38-44. (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:

• Partly cloudy tonight and Friday AM, becoming mostly cloudy Friday night,
• Cloudy with a slight (20%) chance of showers and a bit warmer Saturday afternoon, mostly cloudy with a slight (20%) chance of showers at night,
• Then mostly cloudy and a bit cooler Sunday and Sunday night.
• lows 38-43 cooling back to 38 Sunday night highs 60-63 cooling back to 60 Sunday.
• Partly cloudy and a bit warmer Monday and Monday night,
• Mostly cloudy and a bit warmer Tuesday and at night,
• Mostly cloudy and a bit cooler 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 a bit cooler Thursday.
• highs 60-63 cooling to 58 Thursday lows 40-47. (seasonal averages high 59 low 40)

 

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

• Partly cloudy tonight and Friday AM, increasing clouds to mostly cloudy and a bit warmer in the afternoon, mostly cloudy with a slight (20%) chance of coastal showers tonight while partly cloudy this evening inland and mostly cloudy with a slight (20%) chance of inland showers late tonight,
• Cloudy with a slight (20%) chance of  showers Saturday (under 0.10 in. of rain possible), then just mostly cloudy Saturday night through Sunday night.
• lows 40-45 highs 52-59.
• Partly cloudy and a bit cooler Monday and Monday night,
• Mostly cloudy and a bit warmer Tuesday and at night,
• Mostly cloudy 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 54-62 lows 43-46. (seasonal averages high 54 low 42)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of scattered evening rain and snow showers, a good (50%) chance of isolated rain and snow showers late tonight (under 0.10 in. of rain possible),
• Partly cloudy in the AM, mostly sunny and a bit warmer Friday afternoon, partly cloudy at night,
• Mostly cloudy with a slight (20%) chance of AM rain, a bit warmer with a (30%) chance of rain Saturday afternoon, a slight (20%) chance of showers Saturday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain and snow showers Sunday, then mostly cloudy with a (30%) chance of rain and snow showers at night.
• snow level 3,500 ft. tonight, free air freezing level 3,500 ft. rising to 8,000 ft. Friday afternoon, 9,000 ft. falling to 8,000 ft. Friday night, snow level above 8,000 ft. Saturday, 7,500 ft. Saturday night, 5,000 ft. Sunday, then 4,000 ft. Sunday night.
• lows 22-30 highs 46-48 cooling back to 46 Sunday.
• Partly cloudy with a slight (20%) chance of snow showers Monday, partly cloudy Monday night,
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain and snow showers Tuesday, mostly cloudy with a slight (20%) chance of rain and snow showers 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 with a good (50%) chance of rain Thursday.
• snow level 3,500 ft. Monday, free air freezing level 6,500 ft. Monday night, snow level  5,000 ft. Tuesday, 6,000 ft. Tuesday night, 8,000 ft. Wednesday, then 7,000 ft. Wednesday night and Thursday.
• highs 46-49 lows 26-32.

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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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