Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/05/introducing-the-father-of-tornado-research/
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Here is my weekly weather quiz question. What is “Effective Terrestrial Radiation?” 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 arrows) is developing and will bring more dry weather with sunshine. We are still dryer than normal and below where we were at this time last year. We need rain, but the most we’ll see for the next week or so will be a drop-in-the-bucket compared to what we need. This could be a very bad fire season approaching. The graphics for days 3-7 show the frontal system moving through the Pacific Northwest Saturday night Sunday and a weak disturbance tries to move through between Wednesday and Wednesday night.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 26 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM FRIDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
HEALTH ADVISORIES:
- A PUBLIC HEALTH ADVISORY IS IN EFFECT FOR DETROIT LAKE, LOCATED 46 MILES SE OF SALEM. THE LAKE SPANS BOTH LINN AND MARION COUNTIES. WATER MONITORING HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE AND THE TOXINS THEY PRODUCE IN DETROIT LAKE. PEOPLE SHOULD AVOID SWALLOWING WATER, OR INHALING WATER DROPLETS AS A RESULT OF HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE IDENTIFIED. ALSO KEEP PETS AWAY FROM THE WATER.
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER 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 cloudy with a slight (20%) chance of evening showers (under 0.10 in. of rain possible), just partly cloudy late tonight,
- Partly cloudy and warmer Friday, mostly cloudy in the evening, partly cloudy late at night,
- Partly cloudy Saturday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Saturday night,
- A mix of clouds and sun and a bit cooler Sunday, then partly cloudy with a slight (20%) chance of showers Sunday night.
- lows 42-48 highs 70-76 cooling to 68 Sunday.
- A slight (20%) chance of showers Monday AM, a mix of clouds and sun and a bit cooler in the afternoon, partly cloudy Monday night,
- Partly cloudy and a bit warmer Tuesday through Thursday.
- highs 66-72 lows 44-46. (seasonal averages high 70 low 46)
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Eugene-Springfield Pollen Count
Grass………. Very High (291)
Trees………. Moderate (67)
Last Counted: 5/31/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Mostly cloudy this evening, partly cloudy late tonight,
- Sunny and warmer Friday, partly cloudy in the evening, mostly clear late Friday night,
- Sunny and a bit warmer Saturday, clear at night,
- Mostly cloudy and cooler Sunday, then partly cloudy with a slight (20%) chance of showers Sunday night.
- lows 46-52 cooling to 50 Sunday night highs 75-83 cooling back to 75 Sunday.
- Partly cloudy and a bit cooler Monday and at night,
- Partly cloudy and a bit warmer with Tuesday and Tuesday night,
- Then partly cloudy and a bit warmer Wednesday through Thursday.
- highs 69-77 lows near 48. (seasonal averages high 73 low 50)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy tonight,
- Sunny and a bit warmer Friday, partly cloudy in the evening, mostly cloudy late Friday night,
- AM clouds, mostly sunny Saturday afternoon, mostly clear in the evening, mostly cloudy at night,
- Mostly cloudy Sunday and in the evening, then partly cloudy with a slight (20%) chance of showers late Sunday night.
- lows 46-52 cooling to 50 Sunday night highs near 62.
- Partly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit cooler Monday afternoon and evening, partly cloudy at night,
- Partly cloudy and a bit warmer Tuesday through Thursday.
- highs 60-62 lows near 48. (seasonal averages high 60 low 49)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with a (40%) chance of evening rain and snow showers, partly cloudy with a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
- AM sun, partly cloudy and a bit warmer Friday and at night,
- Mostly sunny and warmer Saturday, mostly clear Saturday night,
- Partly cloudy and a bit cooler Sunday, then partly cloudy with a slight (20%) chance of showers at night.
- snow level 5,500 ft. tonight, free air freezing level 7,500 ft. rising to 10,000 ft. Friday afternoon, 11,000 ft. rising to 12,000 ft. late Friday night, 13,000 ft. Saturday and Saturday night, 13,000 ft. falling to 12,000 ft. Sunday, then snow level above 8,000 ft. falling to 6,500 ft. late Sunday night.
- lows 32-44 cooling to 37 Sunday night highs 59-72 cooling to 65 Sunday.
- Partly cloudy with a slight (20%) chance of showers Monday AM, partly cloudy and cooler in the afternoon and Monday night,
- Then partly cloudy and a bit warmer Tuesday through Thursday.
- snow level 6,000 ft. Monday, free air freezing level 7,500 ft. rising to 9,000 ft. late Monday night, 9,000 ft. Tuesday, 9,000 ft. rising to 12,000 ft. Tuesday night, then 12,000 ft. Wednesday through Thursday.
- highs 53-62 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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