Here is my weekly weather quiz question. What is “ Astronomical Dawn?”  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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A short lived Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) dried us out for today, but an Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) will take over again late tonight returning the chance of showers Saturday. The graphics for  Today, Saturday and Sunday show the next frontal system to bring us more rain chances Saturday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 32 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:

• 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:

• Partly cloudy with patchy fog this AM, mostly sunny and warmer this afternoon, clear this evening, partly cloudy late  tonight,
• Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with a good (50%) chance of showers Saturday afternoon through Sunday, then rain likely (70%) Sunday night.
• highs 69-57 lows near 45.
• Mostly cloudy and a bit cooler with a rain likely (70%) Monday, showers likely (70%) Monday night,
• Mostly cloudy with rain likely (70%) and a bit warmer Tuesday, showers likely (70%) at night,
• Cloudy with a good (50%) chance of showers Wednesday and a bit cooler, mostly cloudy with a good (50%) chance of showers Wednesday night,
• Then cloudy with a good (50%) chance of showers Thursday.
• highs 56-58 cooling back to 56 Wednesday and Thursday lows 45-43. (seasonal averages high 62 low 40)

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Eugene-Springfield Pollen Count:

Grass………. Low (3)

Trees………. High (92)

Last Counted: 4/20/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with patchy AM fog, sunny and warmer this afternoon, partly cloudy tonight,
• Mostly cloudy and cooler with a (30%) chance of AM rain, a slight (20%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of showers Saturday night,
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Sunday, a slight (20%) chance of evening rain, then rain likely (70%) late Sunday night.
• highs 73-59 lows 50-46.
• Mostly cloudy and a bit cooler with rain likely (70%) Monday, showers likely (70%) and a bit warmer with rain likely (70%) Tuesday, a good (50%) chance of showers Tuesday night,
• Cloudy with a (40%) chance of showers Wednesday, then mostly cloudy with a (40%) chance of showers and a bit cooler Wednesday night and Thursday.
• highs 57-60 cooling back to 57 Thursday lows 46-43. (seasonal averages high 64 low 43)

 

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

• Mostly cloudy with patchy AM fog, sunny and warmer this afternoon, partly cloudy with a slight (20%) chance of coastal late tonight,
• Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with a good (50%) chance of showers Saturday afternoon, a (40%) chance of evening coastal showers with coastal showers likely (70%) late at night while a (30%) chance of inland showers Saturday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Sunday, a (30%) chance of evening rain, then rain likely (70%) late Sunday night.
• highs 69-57 lows near 48.
• Mostly cloudy and a bit cooler with rain likely (70%) Monday, showers likely (70%) at night,
• Mostly cloudy with rain likely (60%) Tuesday, a (40%) chance of showers Tuesday night,
• Cloudy with a good (50%) chance of showers Wednesday, mostly cloudy with a good (50%) chance of showers at night,
• Then mostly cloudy with showers likely (70%) Thursday.
• highs near 56 lows near 48. (seasonal averages high 56 low 44)

 

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Forecast for the Cascades in Lane County:

• Mostly sunny and warmer today, clear this evening, partly cloudy tonight,
• Mostly cloudy with a slight (20%) chance of AM rain, a bit cooler with a good (50%) chance of showers Saturday afternoon and Saturday night,
• Mostly cloudy and a bit cooler Sunday with good (50%) chance of rain and snow showers, then rain and snow likely (70%) Sunday night.
• free air freezing level 5,000 ft. rising to 8,000 ft. this afternoon, 10,000 ft. rising to 11,000 ft. late tonight, snow level 7,000 ft. Saturday, 6,000 ft. Saturday night, then 4,500 ft, Sunday and Sunday night.
• highs 56-42 lows 36-33.
• Mostly cloudy and a bit warmer with rain and snow Monday, rain and snow showers Monday night,
• Warmer with rain and snow Tuesday, rain and snow showers likely (70%) at night,
• Then mostly cloudy with rain and snow showers likely (70%) Wednesday through Thursday.
• snow level 5,000 ft. Monday and Monday night, 5,500 ft. Tuesday, 6,000 ft. Tuesday night, 5,000 ft. Wednesday and Wednesday night, then 4,000 ft. Thursday.
• highs 43 lows 35-29.

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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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