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) has taken 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 until next Wednesday and Thursday.

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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 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:

• Mostly clear tonight,
• Partly cloudy with patchy fog Friday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy Friday night,
• Mostly cloudy early in the AM, partly  cloudy and a bit cooler Saturday afternoon and at night,
• Mostly sunny and warmer Sunday, then clear Sunday night.
• lows 45-48 cooling back to 45 Saturday night warming to 52 Sunday night Sunday night highs 76-70 warming to 82 Sunday.
• Sunny and warmer Monday and Tuesday, clear at night,
• Mostly sunny and cooler Wednesday, partly cloudy Wednesday night,
• Mostly sunny in the AM, then partly cloudy and a bit cooler Thursday afternoon.
• highs 89-73 lows 54-50. (seasonal averages high 68 low 44)

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Eugene-Springfield Pollen Count:

Grass………. Moderate (6)

Trees………. Moderate (25)

Last Counted: 5/18/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Clear tonight,
• Sunny and a bit warmer Friday, clear at night,
• Mostly cloudy Saturday AM, sunny and a bit cooler in the afternoon, clear Saturday night,
• Sunny and warmer Sunday, then clear at night.
• lows 47-52 cooling to 50 Saturday night highs 74-80 cooling to 78 Saturday .
• Mostly sunny and a bit warmer Monday and Tuesday, mostly clear both nights,
• Sunny and a bit cooler Wednesday, mostly clear in the evening, partly cloudy late Wednesday night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Friday.
• highs 84-92 cooling to 80 Wednesday lows 53-55. (seasonal averages high 71 low 48)

 

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

• Clear tonight,
• Sunny and a bit warmer Friday, mostly clear in the evening, mostly cloudy late Friday night,
• Mostly cloudy with patchy coastal fog Saturday AM, partly cloudy and a bit cooler in the afternoon, clear at night,
• Sunny and warmer Sunday, mostly clear at night.
• lows 48-50 highs 62-60.
• Mostly sunny and a bit warmer Monday, mostly clear Monday night,
• Mostly sunny but a bit cooler Tuesday, partly cloudy at night,
• Then partly cloudy and a bit cooler Wednesday through Thursday.
• highs 70-62 lows 50-52. (seasonal averages high 59 low 47)

 

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and a bit warmer Friday, partly cloudy in the evening, clear late at night,
• Partly cloudy Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• Mostly sunny and warmer Sunday, then clear at night.
• free air freezing level 9,000 ft. rising to 10,000 ft. late tonight, 10,000 ft. rising to 11,000 ft. Friday afternoon, 12,000 ft. falling to 11,000 ft. Friday night, 11,000 ft. Saturday and Saturday night, 12,000 ft. Sunday, then 13,000 ft. late Sunday night.
• lows 33-42 highs 67-63 warming to 72 Sunday.
• Sunny and a bit warmer Monday, clear Monday night,
• Mostly sunny and a bit warmer Tuesday, mostly clear at night,
• Sunny Wednesday AM, partly cloudy and a bit cooler Wednesday afternoon and at night,
• Mostly sunny Thursday AM, then partly cloudy and cooler with a slight (20%) chance of showers in the afternoon.
• free air freezing level 13,000 ft. Monday through Wednesday night, then snow level above 8,000 ft. Thursday.
• highs 78-80 cooling to 63 Thursday lows 46-43.

 

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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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