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 a frontal system approaching the Pacific Northwest toward the end of the week.

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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:

• Slowly increasing clouds with a slight (20%) chance of showers late this afternoon (under 0.10 in. of rain possible), rain tonight (0.50 in. of rain possible) and Tuesday AM, showers with a slight (20%) chance of thunderstorms and a bit cooler Tuesday afternoon (0.25 in. of rain possible), showers likely (70%) with a slight (20%) chance of evening thunderstorms, a good (50%) chance of showers late Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy a bit warmer with a slight (20%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of evening, showers, then just partly cloudy late at night.
• highs 58-55 warming to 62 Wednesday lows 47 -37.
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Mostly sunny and a bit warmer Friday, partly cloudy Friday night and Saturday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Saturday night,
• Then mostly sunny Sunday.
• highs 68-75 lows 43-45. (seasonal averages high 67 low 43)

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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 and a bit warmer with a slight (20%) chance of rain this afternoon (under 0.10 in. of rain possible, rain tonight (0.50 in. of rain possible) and Tuesday AM,  showers and a bit cooler in the afternoon and evening, mostly cloudy with a (30%) chance of showers late Tuesday night (snow level 3,500 ft.),
• Mostly cloudy with a slight (20%) chance of showers in the AM (snow level 3,500 ft.), a bit warmer Wednesday afternoon, partly cloudy Wednesday night.
• highs 64-57 warming to 62 Wednesday lows 48-42.
• Partly cloudy and a bit warmer Thursday, mostly clear at night,
• Mostly sunny Friday, mostly clear Friday night,
• Then mostly sunny and a bit warmer Saturday and Sunday (a bit cooler), mostly clear Saturday night.
• highs 72-82 cooling to 79 Sunday lows 45-48. (seasonal averages high 70 low 47)

 

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

• Becoming mostly cloudy with a slight (20%) chance of rain this afternoon (under 0.10 in. of rain possible), rain tonight (0.50 in. of rain possible) and Tuesday AM, coastal showers likely (70%) and a bit cooler Tuesday afternoon while inland showers in the afternoon, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with a slight (20%) chance of coastal showers in the AM (0.10 in. of rain possible), showers likely (70%) and a bit cooler Tuesday afternoon while inland afternoon showers, a slight (20%) chance of showers Tuesday night,
• Mostly cloudy with  a slight (20%) chance of AM showers , partly cloudy and a bit warmer Wednesday afternoon and Wednesday night.
• highs 57-54 cooling back to 57 Wednesday lows 50-45.
• Partly cloudy and a bit warmer Thursday, mostly clear at night,
• Then mostly sunny and a bit warmer, mostly clear Friday night,
• Sunny and a bit cooler Saturday, mostly clear at night,
• Then sunny and a bit warmer Sunday.
• highs 63-65 cooling to 60 Saturday warming to 66 Sunday lows 48-50. (seasonal averages high 59 low 47)

 

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Forecast for the Cascades in Lane County:

• Increasing clouds this afternoon, rain and snow late tonight (0.50 in. of rain possible, 2-5 in. of snow possible),
• Mostly cloudy with AM rain and snow, showers with a slight (20%) chance of thunderstorms and a bit cooler Tuesday afternoon and evening, rain and snow showers likely (70%) late at night,
• Mostly cloudy with a (40%) chance of rain and snow showers and a bit warmer Wednesday, a slight (20%) chance of evening rain and snow showers, then just partly cloudy Wednesday night.
• free air freezing level rising to 6,500 ft. today, snow level 6,000 ft. falling to 5,00 ft. late tonight, 4,500 ft. Tuesday, 3,500 ft. Tuesday night, 4,000 ft. Wednesday, then 5,500 ft. Wednesday night.
• highs 46-38 warming to 42 Wednesday lows 34-25.
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Mostly sunny and a bit warmer Friday, partly cloudy Friday night and Saturday AM, mostly sunny and a bit warmer Saturday afternoon, mostly clear at night,
• Then mostly sunny and a bit warmer Sunday.
• free air freezing level 7,000 ft. Thursday, 9,000 ft. Thursday night and Friday, 10,000 ft. Friday night, then 11,000 ft. Saturday through Sunday.
• highs 53-65 lows 30-36.

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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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