Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/06/can-these-machines-keep-storm-researchers-safer/
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Here is my weekly weather quiz question for the last time. What is a “Fallstreak?” Here is the correct answer. A Fallstreak is the same as Virga; streaks or wisps of precipitation falling from a cloud but evaporating before reaching the ground. In certain cases, shafts of virga may precede a microburst. I’ll have a new weekly weather forecasts for you starting 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 Low Pressure Trough (Shaded “U” shape with arrows) will cool us down a bit to start the workweek. The graphics for days 1-3 show a weak front settling down from the north and apparently falling apart over us causing only cooling. The graphics for Days 3-7 show a frontal system approaching the coast Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 31 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 17 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 36 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
HEALTH ADVISORIES:
- THE HEALTH ADVISORY HAS BEEN RE-ISSUED FOR UPPER KLAMATH LAKE. THE LAKE IS LOCATED OFF OREGON ROUTE 140, 15 MILES WEST OF KLAMATH FALLS IN KLAMATH COUNTY. WATER MONITORING HAS CONFIRMED THE LEVEL OF CYNOTOXINS (FROM HARMFUL ALGAE TOXINS) IS ONCE AGAIN ABOVE RECREATIONAL GUIDELINES FOR HUMAN EXPOSURE. PEOPLE AND ESPECIALLY SMALL CHILDREN AND PETS SHOULD AVOID RECREATING IN AREAS WHERE THE WATER IS FOAMY, THICK LIKE PAINT, PEA-GREEN, BLUE-GREEN OR BROWNISH-RED IN COLOR, IF A THICK MAT OF CYANOBACTERIA (HARMFUL ALGAE) IS VISIBLE IN THE WATER, OR BRIGHT GREEN CELLS ARE SUSPENDED IN THE WATER COLUMN. IF YOU OBSERVE THESE SIGNS IN THE WATER ARE ENCOURAGED TO AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE IDENTIFIED.
- A RECREATIONAL HEALTH ADVISORY HAS BEEN ISSUED FOR DORENA RESERVOIR, LOCATED 6 MILES EAST OF COTTAGE GROVE IN LANE COUNTY. WATER MONITORING HAS CONFIRMED THE PRESENCE OF HARMFUL ALGAE ABOVE OREGON HEALTH AUTHORITY RECREATIONAL VALUES FOR CELL COUNTS. HARMFUL ALGAE AT THIS LEVEL ARE LIKELY TO BE ASSOCIATED WITH CYANOTOXIN CONCENTRATIONS THAT CAN BE HARMFUL TO HUMANS AND ANIMALS. RECREATIONAL VISITORS ARE ADVISED TO ALWAYS BE ALERT TO SIGNS OF HARMFUL ALGAE AND AVOID AREAS WITH VISIBLE SCUM THAT LOOKS FOAMY, THICK LIKE PAINT, PEA-GREEN, BLUE-GREEN, OR BROWNISH, OR WHERE SMALL BRIGHT-GREEN CLUMPS ARE FLOATING IN THE WATER. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE IDENTIFIED.
- A PUBLIC HEALTH ADVISORY HAS RE-ISSUED FOR DETROIT LAKE, LOCATED 46 MILES SE OF SALEM. THE LAKE SPANS BOTH LINN AND MARION COUNTIES. WATER MONITORING HAS CONFIRMED THE PRESENCE OF HARMFUL ALGAE ABOVE OREGON HEALTH AUTHORITY RECREATIONAL VALUES FOR CELL COUNTS. HARMFUL ALGAE AT THIS LEVEL ARE LIKELY TO BE ASSOCIATED WITH CYANOTOXIN CONCENTRATIONS THAT CAN BE HARMFUL TO HUMANS AND ANIMALS. RECREATIONAL VISITORS ARE ADVISED TO ALWAYS BE ALERT TO SIGNS OF HARMFUL ALGAE AND AVOID AREAS WITH VISIBLE SCUM THAT LOOKS FOAMY, THICK LIKE PAINT, PEA-GREEN, BLUE-GREEN, OR BROWNISH, OR WHERE SMALL BRIGHT-GREEN CLUMPS ARE FLOATING IN THE WATER. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES SUCH AS WATER SKIING OR POWER BOATING, IN AREAS WHERE BLOOMS ARE IDENTIFIED. FOR MORE INFORMATION ON SALEM’S WATER ADVISORY GO TO HTTP://WWW.CITYOFSALEM.NET.
- 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 clear tonight,
- AM clouds, mostly sunny and a bit cooler Monday afternoon, mostly clear Monday night,
- Mostly sunny and a bit warmer Tuesday, just partly cloudy at night,
- A mix of clouds and sun and a bit warmer Wednesday (Independence Day), then partly cloudy Wednesday night.
- lows 47-44 warming to 52 Wednesday night highs 73-78.
- AM clouds and sun, mostly sunny and a bit warmer Thursday afternoon, partly cloudy Thursday night,
- Mostly sunny and slightly cooler Friday, partly cloudy in the evening, mostly cloudy late at night,
- AM clouds, mostly sunny but a bit cooler Saturday afternoon, mostly clear Saturday night,
- Then mostly sunny and a bit warmer Sunday.
- highs 80-78 warming back to 80 Sunday lows 52-50. (seasonal averages high 79 low 50)
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Eugene-Springfield Pollen Count
Grass………. High (20)
Trees………. Low (4)
Last Counted: 6/29/18
Data Courtesy of Oregon Allergy Associates
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Forecast for Roseburg:
- Clear this evening, partly cloudy late tonight and Monday AM, sunny but a bit cooler in the afternoon, mostly clear Monday night,
- Sunny and a bit warmer Tuesday, partly cloudy at night,
- Then partly cloudy and a bit warmer Wednesday (Independence Day) and Wednesday night.
- lows 53-49 warming back to 53 Wednesday night highs 77-83.
- Mostly sunny and a bit warmer Thursday, mostly clear at night,
- Then mostly sunny and a bit cooler Friday, Saturday, and Sunday, mostly clear Friday night and Saturday night.
- highs 86-82 lows 54-52. (seasonal averages high 81 low 55)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Clear this evening, partly cloudy late tonight and Monday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late Monday night,
- Sunny Tuesday, partly cloudy at night,
- Mostly cloudy Wednesday (Independence Day), then partly cloudy Wednesday night.
- lows 52-49 warming back to 52 Tuesday night highs near 66.
- Partly cloudy and a bit warmer Thursday through Friday night,
- Then mostly sunny Saturday and Sunday, mostly clear Saturday night.
- highs near 67 lows near 52. (seasonal averages high 63 low 52)
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Forecast for the Cascades in Lane County:
- Mostly clear tonight,
- Mostly sunny and a bit cooler Monday, mostly clear Monday night,
- Mostly sunny and a bit warmer Tuesday, partly cloudy at night,
- Then partly cloudy and a bit warmer Wednesday (Independence Day) and Wednesday night.
- free air freezing level 14,000 ft. tonight, 13,000 ft. falling to 12,000 ft. Monday afternoon, 11,000 ft. falling to 10,000 ft. late Monday night, 9,000 ft. rising to 11,000 ft. Tuesday afternoon, 12,000 ft. Tuesday night, 12,000 ft. rising to 13,000 ft. Wednesday, then 13,000 ft. Wednesday night.
- lows 40-35 warming to 44 Tuesday night highs 60-70.
- Partly cloudy Thursday AM, mostly sunny Thursday afternoon, mostly clear at night,
- Mostly sunny Friday AM, partly cloudy with a slight (20%) chance of showers and a bit cooler in the afternoon and evening, just partly cloudy late Friday night,
- Mostly sunny and a bit cooler Saturday, clear at night,
- Then sunny and a bit warmer Sunday.
- free air freezing level 13,000 ft. Thursday through Friday AM, snow level above 8,000 ft. Friday afternoon and evening, free air freezing level 13,000 ft. Saturday then 14,000 ft. Saturday night and Sunday.
- highs 70-67 warming back to 70 Sunday lows near 44-42.
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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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