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. 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 20 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 18 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 sunny and warmer today, clear tonight,
• Sunny and a bit warmer Monday and Tuesday, clear Monday night and Tuesday evening, party cloudy late Tuesday night.
• highs 83-92 lows 54-57 cooling to 52 Tuesday night.
• Partly cloudy and cooler Wednesday and Wednesday night,
• Partly cloudy and a bit cooler Thursday and at night,
• Mostly sunny Friday AM, a mix of clouds and sun and a bit cooler Friday, then partly cloudy Friday night and Saturday.
• highs 74-70 lows near 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:

• Sunny and warmer today, clear tonight,
• Mostly sunny and a bit warmer Monday, clear Monday night,
• Sunny and a bit cooler Tuesday, then mostly clear late at night.
• highs 87-94 cooling to 92 Tuesday lows 56-59 cooling to 54 Tuesday night.
• Mostly sunny and a bit cooler Wednesday, partly cloudy Wednesday night through Thursday night,
• Then partly cloudy with a slight (20%) chance of thunderstorms Friday through Saturday.
• highs 75-73 warming to 76 Saturday lows near 50. (seasonal averages high 71 low 48)

 

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

• Mostly cloudy with patchy AM coastal fog, sunny this afternoon while sunny  inland today, clear tonight,
• Sunny and a bit warmer Monday, mostly clear Monday night,
• Mostly sunny but a bit cooler Tuesday, then mostly clear at night,
• highs 67-72 cooling to 63 Tuesday lows 53-50.
• Partly cloudy Wednesday through Saturday.
• highs near 60 lows near 50. (seasonal averages high 59 low 48)

 

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Forecast for the Cascades in Lane County:

• Sunny and warmer today and Monday, clear both nights,
• Mostly sunny and a bit warmer Monday, clear night,
• Sunny and a bit cooler Tuesday, then mostly clear at night.
• free air freezing level 11,000 ft. warming to 12,000 ft. this afternoon, 13,000 ft. tonight, then 14,000 ft. Monday through Tuesday night.
• highs 72-78 cooling to 76 Tuesday lows 45-50 cooling back to 45 Tuesday night.
• Mostly sunny Wednesday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers in the afternoon and evening, just partly cloudy late Wednesday night,
• Partly cloudy in the AM, mostly sunny and cooler with a slight (20%) chance of showers Thursday afternoon and in the evening, partly cloudy Thursday night,
• Mostly sunny Friday AM, increasing clouds to mostly cloudy and a bit cooler with a (30%) chance of showers in the afternoon and evening, partly cloudy late Friday night,
• Then a mix of cloud and sun Saturday.
• free air freezing level 14,000 ft. in the Wednesday AM,  snow level 8,000 ft. Wednesday afternoon, 8,000 ft. in the evening, free air freezing level 8,000 ft. late Wednesday night and Thursday AM, snow level 7,000 ft. Thursday afternoon and Thursday night, 7,500 ft. Friday, 8,000 ft. Friday night, free air freezing level 8,000 ft. late Friday night, then 8,000 ft. rising to 10,000 ft. Saturday afternoon.
• highs 67-60 lows 42-40.

 

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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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