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 High Pressure Ridge (Shaded “Arch” shape with arrows) takes over for the rest of the weekend, then an Upper Level Low Pressure Trough (Shaded “U” shape with arrows) moves in sending moisture filled storms out way. The graphics for days 1-3 show the break from active weather. The graphics for days 3-7 show the next frontal systems that will be moving through the Pacific Northwest next Tuesday through Saturday.
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.
Note: Daylight Saving Time begins at 2 AM Sunday so remember to “Spring Forward!” at bedtime tonight by turning your clocks ahead one hour. The authorities also suggest that you check the batteries in your smoke alarms, CO2 detectors, and Radon detectors and replace them if necessary.
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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 15 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 20 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:
- Partly cloudy with a slight (20%) chance of evening showers, becoming mostly cloudy late tonight,
- Patchy AM fog, mostly sunny and warmer Sunday afternoon, mostly clear at night,
- Partly cloudy and a bit warmer Monday, mostly cloudy with a slight (20%) chance of evening rain, rain likely (70%) late Monday night,
- Mostly cloudy and a bit cooler with rain Tuesday, then rain likely (70%) at night.
- lows 38-44 cooling to 36 Tuesday night highs 65-67 cooling to 55 Tuesday.
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, a good (50%) chance of showers and a bit cooler Wednesday night,
- A (30%) chance of showers Thursday, a (40%) chance of showers at night,
- Mostly cloudy with a (40%) chance of showers Friday and Friday night,
- Then mostly cloudy with a good (50%) chance of showers Saturday.
- highs near 53 lows near 37. (seasonal averages high 56 low 37)
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Forecast for Roseburg:
- Mostly cloudy with a slight (20%) chance of isolated showers this evening, partly cloudy with patchy fog late tonight and Sunday AM, sunny and warmer in the afternoon, mostly clear Sunday night,
- Partly cloudy Monday, mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) late Monday night,
- Mostly cloudy with AM rain, rain likely (70%) a bit cooler Tuesday afternoon, then rain likely (60%) at night.
- lows 40-47 cooling to 37 Tuesday night highs 69-56.
- Mostly cloudy with a (40%) chance of rain and snow and a bit cooler Wednesday, a good (50%) chance of showers Wednesday night and Thursday through Friday (a bit warmer), then mostly cloudy and a bit cooler with a (40%) chance of showers Friday night and Saturday (a bit cooler).
- highs 55-57 cooling to 54 Saturday 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 cloudy with isolated inland evening showers, mostly cloudy with patchy fog late tonight,
- Partly cloudy with patchy AM fog, sunny and a bit warmer Sunday afternoon, mostly clear at night,
- Partly cloudy Monday AM, mostly cloudy in the afternoon with a slight (20%) chance of coastal rain and a bit cooler, a good (50%) chance of evening rain, rain late Monday night,
- Mostly cloudy with rain likely (70%) breezy and a bit cooler Tuesday, a (40%) chance of rain and a bit cooler at night.
- lows 43-47 cooling to 39 Tuesday night highs 63-54.
- Mostly cloudy with rain likely (70%) and a bit warmer Wednesday, showers likely (70%) Wednesday night,
- A bit cooler with a (40%) chance of showers Thursday through Friday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday.
- highs 55-53 lows 40-42. (seasonal averages high 54 low 41)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late tonight,
- Partly cloudy Sunday AM, mostly sunny and a bit warmer Sunday afternoon, mostly clear at night,
- Partly cloudy and a bit warmer Monday, more clouds to mostly cloudy with a good (50%) chance of rain late Monday night,
- Mostly cloudy and a bit cooler with rain Tuesday (2 in. of snow possible), rain likely (70%) at night.
- snow level 5,500 ft. tonight, free air freezing level 7,000 ft. Sunday and Sunday night, 8,000 ft. Monday, snow level 7,500 ft. Monday night, 6,000 ft. Tuesday, then 4,000 ft. Tuesday night.
- lows 28-36 cooling to 25 Tuesday night highs 48-50 cooling to 40 Tuesday.
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, a good (50%) chance of showers Wednesday night and Thursday (a bit cooler), cloudy with a (40%) chance of showers Thursday night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Friday, then mostly cloudy with a good (50%) chance of showers Friday night and Saturday.
- snow level 3,500 ft. Wednesday through Thursday, 4,500 ft. Thursday night, 4,000 ft. Friday, 5,500 ft. Friday night, then 4,500 ft. Saturday.
- highs 38-36 lows near 26.
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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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