Here is my weekly weather quiz question. What is “Aurora Australis?” 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 going to take over for the foreseeable future. The graphics for days 3-7 show no frontal systems attempting to break through high pressure to get into the Pacific Northwest through next Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 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 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 tonight,
• Patchy AM fog, partly cloudy and a bit warmer Thursday, partly cloudy at night and Friday AM, mostly sunny and a bit warmer in the  afternoon, partly cloudy Friday night,
• Partly  cloudy and a bit cooler Saturday, then mostly clear at night.
• lows 40-47 cooling to 45 Saturday night highs 70-75 cooling to 73 Saturday.
• Mostly sunny and a bit warmer Sunday, clear Sunday night,
• Sunny Monday, clear at night,
• Then mostly sunny and a bit cooler Tuesday and Wednesday, mostly clear Tuesday night,
• highs 82-87 cooling to 80 Wednesday lows 52-54. (seasonal averages high 67 low 44)

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Eugene-Springfield Pollen Count:

Grass………. Low (2)

Trees………. Moderate (36)

Last Counted: 5/17/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Partly cloudy this evening, clear late tonight,
• Sunny and a bit warmer Thursday and Friday, mostly clear both nights,
• Mostly cloudy Saturday AM, sunny and a bit cooler in the afternoon, then mostly clear at night.
• lows 42-52 highs 74-80 cooling to 78 Saturday.
• Mostly sunny and a bit warmer Sunday, clear at night,
• Sunny and a bit warmer Monday and Tuesday (a bit cooler), clear Monday night, mostly clear Tuesday evening, partly cloudy late at night,
• Partly cloudy Wednesday AM, then sunny but cooler in the afternoon.
• highs 84-92 cooling to 80 Wednesday lows 53-55. (seasonal averages high 70 low 48)

 

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

• Partly cloudy this evening, mostly clear late tonight,
• Sunny Thursday AM, partly cloudy in the afternoon, clear at night,
• Sunny Friday, mostly clear in the evening, partly cloudy late Friday night,
• Mostly  cloudy Saturday AM, sunny in the afternoon, then mostly clear at night.
• lows 45-50 highs 62-60.
• Mostly sunny and a bit warmer Sunday and Monday (a bit cooler), mostly clear Sunday night,
• Sunny Tuesday, mostly clear in the evening, partly cloudy late at night and Wednesday AM, then sunny and a bit cooler Wednesday afternoon.
• highs 670-62 lows 50-52. (seasonal averages high 59 low 47)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late tonight,
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Mostly sunny and a bit warmer Friday and Saturday, mostly clear both nights.
• snow level 6,000 ft. tonight, free air freezing level 8,000 ft. rising to 9,000 ft. Thursday afternoon, 10,000 ft. Thursday night, 11,000 ft. rising to 12,000 ft. Friday, 12,000 ft. falling to 11,000 ft. late Friday night, then 11,000 ft. Saturday and Saturday night.
• lows 30-36 highs 58-66.
• Mostly sunny and a bit warmer Sunday, mostly clear at night,
• Sunny and a bit warmer Monday, clear Monday night,
• Mostly sunny and a bit warmer Tuesday, partly cloudy at night,
• Mostly sunny Wednesday AM, then a mix of clouds and sun and a bit cooler Wednesday afternoon.
• free air freezing level 11,000 ft. rising to 12,000 ft. Sunday, 12,000 ft. Sunday night and Monday, then 13,000 ft. Monday night through Wednesday.
• highs 72-77 cooling back to 72 Wednesday lows 42-45 cooling back to 42 Tuesday 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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