Here is my new weekly weather quiz question. What is  the “Azores High?” The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) is moving away allowing an Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows)  to take over as the workweek begins. The graphics for days 3-7 show that no frontal systems will move through the Pacific Northwest next Wednesday through Sunday. The rest of the long Memorial Day Holiday Weekend is looking good, just not quite as warm as I expected.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 11 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 4 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 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 and a bit cooler this afternoon (Memorial Day), becoming cloudy with a sight (20%) chance of showers late tonight,
• Cloudy and a bit cooler with a (40%) chance of showers Tuesday, mostly cloudy with a (40%) chance of showers Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer Wednesday, then mostly cloudy with a slight (20%) chance of showers late at night.
• highs 72-63 warming back to 72 Wednesday lows 52-48 warming back to 52 Wednesday night.
• Cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun Thursday with a (30%) chance of showers in the afternoon and evening, a slight (20%) chance of showers at night,
• Partly cloudy with a slight (20%) chance of showers Friday AM, then partly cloudy Friday afternoon through Sunday (a bit warmer Saturday and Sunday).
• highs 70-76 lows 48-45. (seasonal averages high 69 low 45)

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Eugene-Springfield Pollen Count:

Grass………. High (117)

Trees………. Moderate (17)

Last Counted: 5/26/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy a bit cooler this afternoon (Memorial Day), a slight (20%) chance of thunderstorms this evening (under 0.10 in. of rain possible),  a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers and a bit warmer Tuesday, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy in the AM, partly cloudy and warmer Wednesday afternoon, then mostly cloudy with a slight (20%) chance of showers Wednesday night.
• highs 73-66 warming to 75 Wednesday lows 52-50 warming back to 52 Wednesday night.
• Mostly cloudy and a bit cooler with a (30%) chance of showers Thursday and at night,
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit warmer with a slight (20%) chance of showers Friday afternoon and in the evening, just partly cloudy late Friday night,
• Partly cloudy with a slight (20%) chance of showers and a bit cooler Saturday afternoon and evening, then just partly cloudy Saturday night and Sunday (a bit cooler).
• highs 76-79 lows 52-50. (seasonal averages high 72 low 49)

 

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

• Mostly cloudy and a bit cooler this afternoon (Memorial Day), mostly cloudy with a slight (20%) chance of coastal showers tonight while a slight (20%) chance of inland evening thunderstorms and a slight (20%) chance of inland showers late tonight (under 0.10 in. of rain possible),
• Cloudy with a slight (20%) chance of showers and a bit warmer Tuesday and in the evening (under 0.10 in. of rain possible), just mostly cloudy late at night and Wednesday, then mostly cloudy with a slight (20%) chance of showers Wednesday night.
• highs 54-62 lows 52-50 warming back to 52 Wednesday night.
• Mostly cloudy Thursday and a bit cooler with a (20%) chance of showers Thursday and Thursday night,
• Mostly cloudy with a slight (20%) chance of showers Friday AM, partly cloudy with a slight (20%) chance of showers Friday afternoon through Saturday night,
• Then just partly cloudy and a bit cooler Sunday.
• highs 58-60 cooling back to 58 Sunday lows 52-49. (seasonal averages high 60 low 49)

 

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Forecast for the Cascades in Lane County:

• Partly cloudy and a bit warmer with a slight (20%) chance of showers and thunderstorms late this afternoon (Memorial Day), mostly cloudy with a slight (20%) chance of showers and thunderstorms this evening, a (40%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler Tuesday with a good (50%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon (under 0.10 in. of rain possible, more in storms), cloudy with a (30%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of showers Wednesday, a slight (20%) chance of showers late Wednesday night.
• snow level above 8,000 ft. today through Wednesday night.
• highs 76-63 lows 42-38 warming back to 42 Wednesday night.
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit warmer with a (40%) chance of showers Thursday afternoon and evening, then partly cloudy Thursday night through Sunday (a bit warmer Saturday and Sunday).
• snow level above 8,000 ft. Thursday and Thursday night, 8,000 ft. Friday AM, free air freezing level 9,000 ft. Friday afternoon, 9,000 ft. falling to 6,500 ft. late Friday night, 6,500 ft. Saturday and Saturday night, then 6,000 ft. rising to 7,500 ft. Sunday afternoon.
• highs 60-73 lows near 38.

 

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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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