Nov
17.
Check out my latest Eugene Daily News Weather Or Not column Like The TV Show “Bones,” But For Real.
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Here is my weekly weather quiz question. What is “Clear Air Turbulence (CAT)?” 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 blue arrows) will give way to a short-lived high pressure ridge (“Arch” shape in blue arrows) late today through Saturday for a little clearing, then another trough will follow closely behind by Sunday. The graphics for days 1-3 show the frontal system moving through Oregon. The graphics for days 3-7 show the parade of complex frontal systems that are headed our way Monday through next Friday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 20 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 43 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 27 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A Health Advisory remains in effect for the Link and Klamath from Keno Dam to J.C. Boyle Dam (downstream from Keno Dam). Water monitoring has confirmed the presence of blue-green algae and the toxins they produce. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area.
- A Health Advisory remains in effect for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake including Shoalwater Bay to the north and all of Upper Klamath Lake. These areas of Upper Klamath Lake are located off Oregon Route 140, 15 miles west of Klamath Falls in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Howard Bay. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Howard Bay and Shoalwater Bay at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
- A Health Advisory HAS BEEN LIFTED for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the toxin levels have dissipated and are safe for humans. The authorities warn that the water still is not safe for animals, such as dogs, and they should not be allowed to have contact with the water.
- A Health Advisory remains in effect for Willow Creek Reservoir, located just east of the town of Heppner in Morrow County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the reservoir. These toxin concentrations can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue green or brownish red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur is discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified, or an advisory issued, can expose people to the toxins being produced. Although toxins are not absorbed through the skin, people who have skin sensitivities that come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Willow Creek Reservoir at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
- A Health Advisory remains in effect for Coffenbury Lake, located at Fort Stevens State Park about five miles northwest of US-101 ALT, Northwest Ridgefield Road near Warrenton in Clatsop County. Water monitoring has confirmed the presence of blue-green algae that can produce toxins in Coffenbury Lake. These blue-green algae levels are likely to be associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. People should always avoid areas with visible scum that looks foamy, scummy, thick like paint, pea-green, blue-green or brownish-red. Swimming and high-speed water activities such as water skiing or power boating where ingestion and inhalation exposure can occur are discouraged. Swallowing or inhaling water droplets as a result of these water activities in areas where a bloom has been identified or an advisory issued, can expose people to the toxins that can be produced. Although toxins are not absorbed through the skin, people with skin sensitivities who come into contact with a bloom may experience a puffy, red rash at the affected area. Drinking water directly from Coffenbury Lake at this time is especially dangerous. OHA Public Health Division officials advise campers and other recreational visitors that toxins cannot be removed by boiling, filtering or treating water with camping-style filters.
- A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson 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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Your College Football Forecast:
November 18th:
Ducks vs Arizona, at Autzen Stadium – Kickoff: 4 PM – A mix of clouds and sun, 50, cooling with increasing clouds as the game progresses.
November 18th:
Beavers vs Arizona State, at Reser Stadium – Kickoff: 12:00 PM – A mix of clouds and sun, 45, warming to 50 by the end of the game.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- A mix of clouds and sun and a bit warmer with a good (50%) chance of isolated showers today (under 0.10 in. of rain possible), partly cloudy this evening , mostly cloudy with patchy fog late tonight,
- Patchy AM fog, a mix of clouds and sun Saturday, partly cloudy with areas of fog late Saturday night and Sunday AM, mostly cloudy and a bit warmer with a good (50%) chance of rain Sunday afternoon, then rain at night.
- highs 50-53 lows 33-43.
- A mix of clouds and sun and a bit cooler with a (40%) chance of rain Monday, mostly cloudy with a (40%) chance of rain Monday night,
- Mostly cloudy with a (40%) chance of showers and a bit warmer Tuesday, rain likely (70%) at night,
- Mostly cloudy and a bit warmer with rain likely (70%) Wednesday, then a (40%) chance of rain Wednesday night and Thursday (Thanksgiving Day).
- highs 52-57 lows 44-47. (seasonal averages high 52 low 38)
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Forecast for Roseburg:
- Mostly cloudy with a (30%) chance of AM rain and snow showers, a bit warmer with a slight (20%) chance of showers this afternoon (under 0.10 in. of rain possible, snow level 3,000 ft.), mostly cloudy this evening, becoming partly cloudy with patchy fog late tonight and Saturday AM, partly cloudy and a bit cooler in the afternoon, partly cloudy with patchy fog Saturday night,
- Mostly cloudy and a bit warmer with a (30%) chance of rain Sunday, then rain late at night.
- highs 52-57 lows 33-44.
- Mostly cloudy and a bit cooler with rain likely (70%) Monday, a (40%) chance of rain and a bit warmer Monday night and Tuesday, rain Tuesday night,
- Mostly cloudy with rain likely (60%) Wednesday, a (40%) chance of rain at night,
- Then cloudy and a bit cooler with a (30%) chance of rain Thursday (Thanksgiving Day).
- highs 55-58 cooling to 56 Thursday lows 46-49. (seasonal averages high 53 low 40)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a (40%) chance of showers and a bit warmer today (under 0.10 in. of rain possible), partly cloudy with patchy fog late tonight, and Saturday AM, partly cloudy and a bit warmer in the afternoon, patchy fog late at night,
- Mostly cloudy with a good (50%) chance of rain and a bit warmer Sunday, then rain and windy at night.
- highs 54-57 lows 37-47.
- Mostly cloudy with rain likely (70%) Monday, a good (50%) chance of rain Monday night,
- Mostly cloudy and a bit warmer with rain likely (70%) Tuesday and Tuesday night,
- Rain likely (70%) and a bit cooler Wednesday, then mostly cloudy with a (40%) chance of rain and a bit cooler Wednesday night and Thursday (Thanksgiving Day).
- highs 57-60 cooling to 58 Thursday lows 48-52 cooling to 50 Wednesday night. (seasonal averages high 55 Low 43)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with AM rain and snow showers likely (70%), a good (50%) chance of rain and snow showers and bit warmer this afternoon, mostly cloudy this evening, just partly cloudy late tonight,(0.10 in. of rain possible, 2 in. of snow possible)
- A mix of clouds and sun and a bit warmer Saturday, partly cloudy Saturday night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain and snow Sunday afternoon, then rain at night.
- snow level 3,000 ft. today, free air freezing level 4,000 ft. falling to the surface late tonight, 4,500 ft. rising to 6,500 ft. Saturday, 6,500 ft. falling to 6,000 ft. Saturday night, snow level 5,000 ft. Sunday, then 6,500 ft. Sunday night.
- highs 33-39 lows 20-32.
- Mostly cloudy with rain and snow likely (70%) Monday, a good (50%) chance of rain and showers Monday night,
- A (40%) chance of showers and a bit warmer Tuesday, rain likely (70%) at night and Wednesday (a bit warmer), then mostly cloudy with a good (50%) chance of rain Wednesday night and Thursday.
- snow level 5,000 ft. Monday, 5,500 ft. Monday night, 7,000 ft. Tuesday, above 8,000 ft. Tuesday night and Wednesday, then 6,000 ft. Wednesday night and Thursday (Thanksgiving Day).
- highs 39-44 lows 34-36.
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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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