Here is my weekly weather quiz question for the last time. What is “An Arroyo?” Here is the correct answer. An Arroyo is in hydrologic terms, a water-carved channel or gully in arid country, usually rather small with steep banks, dry most of the time, due to infrequent rainfall and the shallowness of the cut which does not penetrate below the level of permanent ground water. I’ll have a new weekly weather quiz question for you starting Monday. 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 helping to return the precipitation. The graphic for days 1-3 shows the front that moved through the Pacific Northwest Saturday. The graphic for days 3-7 shows the next complex frontal systems that will be moving into Oregon through next Saturday. 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 36 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 40 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  THROUGH THIS AFTERNOON. 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:

• A mix of clouds and sun with a slight (20%) chance of showers today, partly cloudy and colder with patchy frost late tonight and Monday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy in the evening, mostly cloudy late Monday night,
• Then mostly cloudy and a bit warmer Tuesday and at night.
• highs 56-65 lows 32-43.
• A mix of clouds and sun Wednesday, cloudy with a (40%) chance of rain Wednesday night,
• Cloudy with a good (50%) chance of showers and a bit cooler Thursday, mostly cloudy with a good (50%) chance of showers at night,
• Then mostly cloudy and a bit cooler with rain likely (70%) Friday through Saturday.
• highs 65-56 lows near 46. (seasonal averages high 59 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 cloudy this AM, sunny and a bit cooler this afternoon, partly cloudy with patchy frost late tonight and Monday AM, sunny and a bit warmer Monday afternoon, partly cloudy in the evening, mostly cloudy Monday night,
• Then mostly cloudy and a bit warmer Tuesday and at night.
• highs 57-65 lows 36-45.
• Mostly cloudy and a bit warmer Wednesday, mostly cloudy with a (30%) chance of rain Wednesday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Thursday through Friday night,
• Then rain and a bit cooler Saturday.
• highs 67-52 lows 47-44. (seasonal averages high 60 low 41)

 

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

• Mostly cloudy this AM, sunny and a bit cooler this afternoon, partly cloudy this evening, mostly clear with patchy inland frost late tonight and Monday AM, partly cloudy and a bit warmer in the afternoon, mostly cloudy at night,
• Cloudy and a bit warmer Tuesday, mostly cloudy Tuesday night.
• highs 54-62 lows 38-47.
• Mostly cloudy and a bit warmer Wednesday, a (40%) chance of rain Wednesday night,
• Mostly cloudy and a bit cooler with a rain likely (70%) Thursday through Friday, then rain and breezy and a bit cooler Friday night and Saturday.
• highs 62-53 lows 48-45. (seasonal averages high 54 low 42)

 

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain and snow showers today, mostly cloudy this evening, partly cloudy and colder tonight,
• Partly cloudy in the AM, mostly sunny and a bit warmer Monday afternoon, partly cloudy in the evening, mostly cloudy late Monday night through Tuesday night.
• snow level 3,500 ft. today, free air freezing level 5,000 ft. falling to the surface tonight, at the surface rising t0 6,000 ft. Monday, 6,500 ft. Monday night, 6,500 ft. rising to 7,500 ft. Tuesday, then 8,000 ft. Tuesday night.
• highs 42-49 lows 16-34.
• A mix of clouds and sun and a bit warmer Wednesday, becoming cloudy with a good (50%) chance of rain Wednesday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Thursday, a good (50%) chance of showers at night,
• Then mostly cloudy with rain and snow likely (70%) and a bit cooler Friday through Saturday.
• free air freezing level 9,000 ft. Wednesday, snow level above 7,000 ft. Wednesday night, 6,000 ft. Thursday, 6,500 ft. Thursday night, 5,500 ft. Friday and Friday night, then 4,500 ft. Saturday.
• highs 56-42 lows 35-32 warming back to 35 Friday night.

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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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