Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/05/introducing-the-father-of-tornado-research/
__________
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.
________________
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.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 21 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 6 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)
________________
ADVISORIES:
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.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly sunny and warmer this afternoon, partly cloudy tonight,
- Mostly sunny and a bit warmer Saturday, mostly clear at night,
- A mix of clouds and sun and much cooler Sunday, then partly cloudy with a slight (20%) chance of showers Sunday night.
- highs 72-80 cooling to 70 Sunday lows 45-48.
- A mix of clouds and sun and a bit cooler Monday, partly cloudy Monday night,
- Partly cloudy and a bit warmer Tuesday through Thursday.
- highs 66-74 lows 44-46. (seasonal averages high 70 low 46)
_____
Eugene-Springfield Pollen Count
Grass………. High (41)
Trees………. Moderate (15)
Last Counted: 6/1/18
Data Courtesy of Oregon Allergy Associates
_________________
Forecast for Roseburg:
- Sunny and warmer today, partly cloudy this evening, mostly clear late tonight,
- Sunny and a bit warmer Saturday, clear at night,
- Becoming mostly cloudy and cooler Sunday, partly cloudy in the evening, mostly cloudy and cooler with a slight (20%) chance of showers late Sunday night.
- highs 75-83 cooling back to 75 Sunday lows 49-56 cooling to back to 59 Sunday night.
- AM clouds, partly cloudy and a bit cooler Monday afternoon and at night,
- Partly cloudy and a bit warmer 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)
_____________________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Sunny and a bit warmer this afternoon, partly cloudy this evening, mostly clear late tonight,
- AM clouds, mostly sunny Saturday afternoon, mostly clear in the evening and mostly cloudy late at night at the shore while mostly clear inland at night,
- Mostly cloudy Sunday, mostly cloudy with a slight (20%) chance of showers late Sunday night.
- highs 64-66 cooling to 62 Sunday lows 50-53 cooling to 48 Sunday night.
- Mostly cloudy in the AM, just partly cloudy and a bit cooler Monday afternoon and at night,
- Then partly cloudy and a bit warmer Tuesday through Thursday.
- highs 60-62 lows near 48. (seasonal averages high 60 low 49)
________________
Forecast for the Cascades in Lane County:
- Sunny and a bit warmer today, mostly clear tonight,
- 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 late at night.
- free air freezing level 8,000 ft. rising to 10,000 ft. this afternoon, 12,000 ft. late tonight, 13,000 ft. Saturday and Saturday night, 12,000 ft. Sunday afternoon, then snow level 6,500 ft. late Sunday night.
- highs 59-72 cooling to 67 Sunday lows 42-44 cooling to 37 Sunday night.
- 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 AM, , free air freezing level 8,000 ft. Monday afternoon, 10,000 ft. late Monday night, 9,000 ft. Tuesday, then 12,000 ft. Tuesday night through Thursday.
- highs 53-64 lows 37- 35 warming to 42 Wednesday night.
________________
**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.
________________
Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.
________________