Here is my new 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 Low Pressure Trough (Shaded “U” shape with blue arrows) is moving out of the Gulf of Alaska to keep the rain chances with us. The graphics for days 1-3 show the next frontal system pushing through Oregon Tuesday. The graphics for days 3-7 show frontal systems attempting to break through high pressure to get into the Pacific Northwest through next Monday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 8 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 WINTER WEATHER ADVISORY IS IN EFFECT FROM TONIGHT THROUGH TUESDAY EVENING FOR THE NORTH OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• A WIND ADVISORY IS IN EFFECT FROM 2 PM UNTIL 11 PM TUESDAY FOR CENTRAL AND EASTERN LAKE COUNTY.
• 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:

• Increasing clouds to cloudy with rain developing by late this evening, rain late tonight (0.50 in. of rain possible) and Tuesday AM, showers with a slight (20%) chance of isolated thunderstorms with small hail possible and a bit cooler Tuesday afternoon (0.25 in. of rain possible, more in storms), showers likely (70%) with a slight (20%) chance of evening thunderstorms, a good (50%) chance of showers late Tuesday night (0.10 in. of rain possible, more in storms),
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Wednesday, then just partly cloudy late Wednesday night through Thursday night.
• lows 48-37 warming to 42 Thursday night highs 54-70.
• Mostly sunny and a bit warmer Friday, Saturday, and Sunday, mostly clear each night,
• Then mostly sunny Monday.
• highs 75-80 lows 44-48. (seasonal averages high 67 low 44)

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Eugene-Springfield Pollen Count:

Grass………. Moderate (19)

Trees………. Moderate (73)

Last Counted: 5/10/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with rain tonight (0.50 in. of rain possible) and Tuesday ( 0.50 in. of rain possible, snow level 3,500 ft.), a (40%) chance of showers Tuesday night (under 0.10 in. of rain possible, snow level 3,500 ft.),
• Mostly cloudy with a slight (20%) chance of showers in the AM (snow level 3,500 ft.), just partly cloudy and a bit warmer Wednesday afternoon, partly cloudy Wednesday night,
• Partly cloudy and a bit warmer Thursday, then mostly clear at night.
• lows 48-43 warming to 46 Thursday night highs 56-73.
• Then mostly sunny and a bit warmer Friday, Saturday, Sunday, and Monday, mostly clear each night.
• highs 80-84 lows 48-53. (seasonal averages high 70 low 47)

 

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

• Mostly cloudy with rain tonight (0.75 in. of rain possible) and Tuesday AM, rain likely (70%) and a bit cooler Tuesday afternoon while inland showers in the afternoon (0.25 in. of rain possible), a slight (20%) chance of showers Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy Wednesday AM, partly cloudy and a bit warmer in the afternoon through Thursday night.
• lows 49-45 warming top 47 Thursday night highs 55-62.
• Mostly sunny and a bit warmer Friday, Saturday, Sunday, and Monday, mostly clear each night,
• highs 63-60 warming to 70 Monday lows 50-53. (seasonal averages high 59 low 47)

 

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Forecast for the Cascades in Lane County:

• Increasing clouds to cloudy with rain and snow developing this evening and increasing late tonight (0.50 in. of rain possible, 3-7 in. of snow possible),
• Mostly cloudy with AM rain and snow, showers with a slight (20%) chance of isolated thunderstorms and a bit cooler Tuesday afternoon and evening, rain and snow showers decreasing late at night,
• Mostly cloudy with a (30%) chance of rain and snow showers and a bit warmer Wednesday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Wednesday night through Thursday night.
• snow level 6,000 ft. tonight, 4,500 ft. Tuesday, 3,500 ft. Tuesday night, 4,500 ft. Wednesday, 5,500 ft. Wednesday night, free air freezing level 7,500 ft. Thursday, then 9,000 ft. Thursday night.
• lows 34-26 warming to 32 Thursday night highs 38-56.
• Mostly sunny and a bit warmer Friday, Saturday, Sunday and Monday, mostly clear each night.
• free air freezing level 10,000 ft. Friday, 11,000 ft. Friday night, 11,000 ft. Saturday through Sunday night, then 12,000 ft. Monday.
• highs 64-68 lows 35-39.

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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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