Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/03/art-form-found-resurgence-recently/
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Here is my weekly weather quiz question for the last time. What are “Detention Basins?” And no, this has nothing to do with staying after school. Here is the correct answer. Detention Basins are structures built upstream from populated areas to prevent runoff and/or debris flows from causing property damage and loss of life. They are normally dry, but are designed to attenuate storm flows or detain mud/debris during and immediately after a runoff event. They have no spillway gates or valves and do not store water on a long-term basis. Typical detention times for storm flows are on the order of 24 to 72 hours, but may be as long as 5 to 10 days. Basins designed for detention of mud and rock debris are periodically excavated to maintain their storage capacity. I’ll have a new weekly weather quiz question 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) moves in sending moisture filled storms out way starting Tuesday. The graphics for days 1-3 show that frontal system headed our way Tuesday. The graphics for days 3-7 show the next frontal systems that will be moving through the Pacific Northwest Thursday through next Sunday.
Note: Willamette Pass Ski is closed for the season due to a lack of snow, but Hoodoo is open Thursday through Sunday from 9 AM- 4 PM or 9 PM. Mt. Ashland is open and reports all lifts are operating. They will also be open 9 AM until 4 pm March 24th through April 1st for Spring break. Check their websites for details on days of operation and ski conditions.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 46 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 5 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 7 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Home Wood Heating Advisory:
(Posted Daily)
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 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:
- Clear with patchy fog late tonight,
- Patchy dense AM fog, partly cloudy and a bit warmer Monday afternoon, mostly cloudy with rain likely (70%) late Monday night (0.10 in. of rain possible),
- Mostly cloudy and a bit cooler with rain Tuesday (0.25 in. of rain possible), cloudy and colder with a good (50%) of rain at night (0.10 in. of rain possible),
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, a (40%) chance of showers and a bit cooler Wednesday night.
- lows 39-44 cooling to 36 Tuesday night and Wednesday night highs 65-53.
- Mostly cloudy and a bit cooler with a (40%) chance of showers Thursday and Thursday night,
- A mix of clouds and sun with a (30%) chance of showers Friday, mostly cloudy with a slight (20%) chance of showers at night,
- A good (50%) chance of showers Saturday, mostly cloudy with a (40%) chance of showers Saturday night,
- Then a mix of clouds and sun with a (40%) chance of showers Sunday.
- highs near 54 lows near 38. (seasonal averages high 56 low 37)
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Forecast for Roseburg:
- Clear tonight,
- AM sun, partly cloudy and a bit warmer Monday afternoon, mostly cloudy with a slight (20%) chance of evening rain, rain likely (70%) late Monday night (0.10 in. of rain possible),
- Mostly cloudy with AM rain, rain likely (70%) a bit cooler Tuesday afternoon (0.25 in. of rain possible), a (40%) of rain and colder at night (0.10 in. of rain possible),
- Mostly cloudy with a (40%) chance of AM rain and snow, rain and snow showers and a bit cooler Wednesday afternoon, a good (50%) chance of showers Wednesday night.
- lows 42-47 cooling to 37 Tuesday night and Wednesday night highs 72-54.
- Mostly cloudy with a (40%) chance of AM rain and snow, a (40%) chance of rain Thursday afternoon, a (40%) chance of showers at night,
- A (30%) chance of showers Friday and Friday night,
- Then mostly cloudy with a (40%) chance of showers Saturday through Sunday.
- highs near 55 lows near 40. (seasonal averages high 57 low 39)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear tonight,
- AM sun, partly cloudy and warmer Monday afternoon, becoming mostly cloudy with a slight (20%) chance of evening rain, rain late Monday night (0.25 in. of rain possible),
- Mostly cloudy with rain likely (70%) and breezy (Wind: S 15-25 mph AM gusts to 40 mph) and a bit cooler Tuesday (0.25 in. of rain possible), a (40%) chance of rain and a bit cooler at night (0.10 in. of rain possible),
- Then a (40%) chance of AM rain, mostly cloudy with a good (50%) chance of showers and a bit warmer Wednesday and Wednesday night.
- lows 44-47 cooling to 39 Tuesday night and Wednesday night highs 65-53.
- Mostly cloudy with a (40%) chance of rain Thursday, a (40%) chance of showers Thursday night,
- A (30%) chance of showers Friday, a slight (20%) chance of showers at night,
- Then mostly cloudy and a bit cooler with a (40%) chance of showers Saturday through Sunday.
- highs 54-52 lows near 42. (seasonal averages high 54 low 41)
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Forecast for the Cascades in Lane County:
- Clear tonight,
- Mostly sunny Monday AM, partly cloudy and a bit warmer in the afternoon and evening, more clouds to mostly cloudy with a (40%) chance of rain late Monday night (0.10 in. of rain possible),
- Mostly cloudy with rain and a bit cooler Tuesday (1-3 in. of snow possible), rain and snow at night (2 in. of snow possible),
- Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Wednesday (1 in. of snow possible), a good (50%) chance of rain and snow showers Wednesday night.
- free air freezing level 7,500 ft. tonight and Monday, snow level 7,500 ft. Monday night, snow level 6,500 ft. falling to 5,500 ft. Tuesday afternoon, 4,000 ft. Tuesday night, 2,500 ft. Wednesday, then 3,500 ft. Wednesday night.
- lows 32-36 cooling to 25 Wednesday night highs 52-38.
- Mostly cloudy and a bit cooler with a (40%) chance of rain or snow showers Thursday, a good (50%) chance of showers Thursday night,
- Mostly cloudy with a (40%) chance of showers Friday and at night,
- A good (50%) chance of showers Saturday, mostly cloudy with a (40%) chance of showers Saturday night, then a mix of clouds and sun with a (40%) chance of showers Sunday.
- snow level 3,000 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, 4,000 ft. Friday night, 3,500 ft. Saturday, 4,000 ft. Saturday night, then 3,500 ft. Sunday.
- highs near 36 lows near 25.
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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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