Here is my weekly weather quiz question for the last time. What is “Aurora Australis?” Here is the correct answer. Aurora Australis is the same as Aurora Borealis, but in the Southern Hemisphere. Also known as the southern lights; the luminous, radiant emission from the upper atmosphere over middle and high latitudes, and centred around the earth’s magnetic poles. These silent fireworks are often seen on clear winter nights in a variety of shapes and colors. I’ll have a new weekly weather quiz question for you Monday. 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. A weak upper level disturbance brings clouds and a bit cooler for today. The graphics for days 3-7 show no frontal systems attempting to break through high pressure to get into the Pacific Northwest until the middle of next week.

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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 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 10 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:

• Cloudy early this AM, partly cloudy and a bit cooler this afternoon, partly cloudy tonight,
• Mostly sunny and warmer Sunday, clear Sunday night,
• Mostly sunny and a bit warmer Monday, then mostly clear at night.
• highs 70-89 lows 47-54.
• Mostly sunny and a bit warmer Tuesday and Wednesday (a bit cooler), mostly clear Tuesday night, partly cloudy Wednesday night,
• Partly cloudy and a bit cooler Thursday and at night,
• Then a mix of clouds and sun and a bit cooler Friday.
• highs 90-73 lows 52-50. (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:

• Mostly cloudy with patchy drizzle this AM, sunny and a bit cooler this afternoon, clear tonight,
• Sunny and warmer Sunday, clear at night,
• Mostly sunny and a bit warmer Monday, then mostly clear Monday night.
• highs 74-96 lows 52-55.
• Mostly sunny Tuesday, a slight (20%) chance of thunderstorms in the afternoon and evening, clear late at night,
• Mostly sunny and a bit cooler with a slight (20%) chance of thunderstorms Wednesday, mostly clear with a slight (20%) chance of thunderstorms Wednesday night,
• Mostly sunny and a bit cooler Thursday, mostly clear at night,
• Then sunny and a bit cooler Friday,
• highs 95-74 lows 58-50. (seasonal averages high 71 low 48)

 

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

• Cloudy with patchy drizzle this AM, partly cloudy and a bit cooler this afternoon, mostly clear tonight,
• Sunny and warmer Sunday, mostly clear at night,
• Mostly sunny and a bit warmer Monday, then mostly clear Monday night.
• highs 60-77 lows 50-54 cooling to 52 Monday night.
• Sunny but a bit cooler Tuesday and Wednesday, mostly clear at night,
• Mostly sunny and a bit cooler Thursday, mostly clear Thursday night,
• Sunny in the AM, then partly cloudy and a bit cooler Friday afternoon.
• highs 72-59 lows 54-49. (seasonal averages high 59 low 48)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy this AM with areas of drizzle near the crest, mostly sunny and a bit cooler this afternoon, mostly clear tonight,
• Mostly sunny and warmer Sunday, clear at night,
• Mostly sunny and a bit warmer Monday, then mostly clear Monday night.
• free air freezing level 10,000 ft. rising to 11,000 ft. today, 11,000 ft. tonight, 12,000 ft. Sunday, then 14,000 ft. Sunday night through Monday night.
• highs 62-78 lows 43-52.
• Sunny and a bit warmer Tuesday, mostly clear at night,
• Sunny Wednesday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Wednesday afternoon and evening, just partly cloudy late Wednesday night,
• Partly cloudy and cooler Thursday and Thursday night,
• Then a mix of clouds and sun and a bit cooler Friday.
• free air freezing level 14,000 ft. Tuesday and Tuesday night,  snow level above 8,000 ft. Wednesday and Wednesday night, free air freezing level 12,000 ft. Thursday, then 11,000 ft. Thursday night and Friday.
• highs 78-65 lows 48-44.

 

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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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