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 9 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 3 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 warmer with a slight (20%) chance of showers this afternoon (under 0.10 in. of rain possible), just partly cloudy tonight,
• Patchy AM fog, partly cloudy and a bit warmer Thursday and at night,
• Mostly sunny Friday, then partly cloudy Friday night.
• highs 62-75 lows 39-45.
• Partly cloudy and a bit warmer Saturday and Saturday night,
• Then mostly sunny and a bit warmer Sunday, Monday, and Tuesday, mostly clear each night,
• highs 74-85 lows 44-50. (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:

• Mostly cloudy and a bit warmer this afternoon, partly cloudy late tonight,
• Partly cloudy and a bit warmer Thursday, mostly clear Thursday night,
• Sunny and a bit warmer Friday, mostly clear at night.
• highs 63-79 lows 42-52.
• Mostly sunny and a bit warmer Sunday and Monday, mostly clear at night,
• Then sunny and a bit cooler Tuesday.
• highs 80-90 cooling to 88 Tuesday lows 50-58. (seasonal averages high 70 low 48)

 

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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, partly cloudy late tonight,
• Partly cloudy and a bit warmer Thursday, mostly clear at night,
• Mostly sunny and a bit warmer Friday, then mostly clear Friday night,
• highs 57-62 lows 45-50.
• Partly  cloudy in the AM, mostly sunny and a bit warmer Saturday afternoon, mostly clear at night,
• Mostly sunny Sunday, mostly clear Sunday night,
• Then sunny Monday and Tuesday, clear Monday night.
• highs 60-70 lows 50-56. (seasonal averages high 59 low 47)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a (30%) chance of rain and snow showers and a bit warmer this afternoon (under 0.10 in. of rain possible,), mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late tonight,
• Then mostly sunny and a bit warmer Thursday and Friday, partly cloudy Thursday night, mostly clear Friday night.
• snow level 3,500 ft. today, 6,000 ft. tonight, free air freezing level 8,000 ft. rising to 9,000 ft. Thursday afternoon, 9,000 ft. Thursday night, then 11,000 ft. rising to 12,000 ft. Thursday night, 11,000 ft. rising to 12,000 ft. Friday, then 12,000 ft. falling to 11,000 ft. Friday night.
• highs 44-65 lows 29-34.
• Mostly sunny and a bit warmer Saturday, Sunday, Monday, and Tuesday, mostly clear each night.
• free air freezing level 11,000 ft. Saturday and Saturday night, 11,000 ft. rising to 12,000 ft. Sunday, 12,000 ft. Sunday night, 12,000 ft. rising to 13,000 ft. Monday afternoon, then 13,000 ft. Monday night and Tuesday.
• highs 65-73 lows 35-44.

 

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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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