Here is my weekly weather quiz question for the last time. What is the “Beaufort Scale?” Here is the correct answer. The Beaufort Scale: The Beaufort wind scale is a system used to estimate and report wind speeds when no measuring apparatus is available. It was invented in the early 19th Century by Admiral Sir Francis Beaufort of the British Navy as a way to interpret winds from conditions at sea. Since that time, the scale has been modernized for effects on land.  I’ll have a new weekly weather quiz question for you 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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A weak Upper Level Low (shades “U” shape with blue arrows) will pass by today then an Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) will take over for some warming. The graphics for days 3-7 show a frontal system moving through between Wednesday and Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 30 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 19 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:

• A RED FLAG WARNING IS IN EFFECT UNTIL NOON TODAY FOR STRONG GUSTY WIND WITH LOW RELATIVE HUMIDITY FOR THE SOUTHERN OREGON COAST, THE WESTERN ROGUE RIVER, AND THE SISKIYOU NATIONAL FOREST.
• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 PM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, THE CURRY COUNTY COAST, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE KLAMATH BASIN.
• The Oregon Health Authority issued a Health Advisory 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.
• The Oregon Health Authority has updated the Health Advisory issued July 28 for Howard Bay (also known locally as Howards Bay or Howard’s Bay), located in the southwest corner of Upper Klamath Lake, to include Shoalwater Bay to the north. 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.
• The Oregon Health Authority issued Health Advisory for Agency Lake, located just north of Klamath Falls along U.S. Highway 97 in Klamath County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in the lake. 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 Agency 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.
• The Oregon Health Authority issued a Health Advisory today 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.
• The Oregon Health Authority issued a Health Advisory 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.
• The Oregon Health Authority has updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.
• 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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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly sunny and a bit warmer today, mostly clear tonight,
• Sunny and a bit warmer Monday and Tuesday, clear both nights.
• highs 83-89 lows 54-57.
• AM clouds, mostly sunny and a bit cooler Wednesday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night and Thursday AM,  partly cloudy and a bit cooler in the afternoon and Thursday night,
• Partly cloudy in the AM, mostly sunny and a bit warmer Friday afternoon and Saturday, mostly clear Friday night.
• highs 85-79 warming to 87 Saturday lows 56-48. (seasonal averages high 82 low 51)

 

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Eugene-Springfield Pollen Count

Grass………. Low (2)
Trees………. Low (6)
Last Counted: 8/12/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season is over.

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Forecast for Roseburg:

• Sunny with areas of smoke today, clear with patchy evening smoke, areas of smoke late tonight,
• Areas of AM smoke, sunny and a bit warmer with patchy smoke Monday afternoon, mostly clear with patchy smoke Monday night,
• Mostly sunny with patchy smoke Tuesday, mostly clear with a slight (20%) chance of evening thunderstorms, then just partly cloudy late Tuesday night.
• highs 86-92 lows 58-60.
• Partly cloudy in the AM, sunny and a bit cooler Wednesday afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit cooler Thursday afternoon and evening, mostly clear late at night,
• Mostly sunny and a bit warmer Friday, mostly clear Friday night,
• Then sunny and a bit warmer Saturday.
• highs 88-82 warming to 93 Saturday lows 60-55. (seasonal averages high 84 low 55)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Partly cloudy this AM, sunny this afternoon, clear this evening, partly cloudy with patchy coastal fog late tonight,
• Partly cloudy with patchy AM coastal fog, sunny Monday afternoon, mostly clear in the evening, partly cloudy at night,
• Then partly cloudy Tuesday and Tuesday night.
• highs near 65 lows near 55.
• Partly cloudy Wednesday, mostly cloudy with a slight (20%) chance of showers Wednesday night and Thursday, partly cloudy and a bit cooler Thursday afternoon, partly cloudy Thursday night,
• Then mostly sunny and a bit warmer Friday and Saturday, mostly clear Friday night.
• highs near 66 lows 56-52. (seasonal averages high 66 low 53)

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer with smoke today and Monday, clear with smoke tonight and Monday night,
• AM sun, partly cloudy and a bit warmer with more smoke Tuesday afternoon and at night.
• free air freezing level 14,000 ft. today, 15,000 ft. tonight, 15,000 ft. rising to 16,000 ft.  Monday afternoon, 16,000 ft. Monday night, then 15,000 ft. Tuesday and Tuesday night.
• highs 73-80 lows 52-54.
• Partly cloudy with more smoke and a slight (20%) chance of showers and thunderstorms and a bit cooler Wednesday afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• Mostly cloudy with slight (20%) chance of AM showers, a mix of clouds and sun with patchy smoke and a bit cooler Thursday afternoon, partly cloudy with patchy smoke at night,
• Then mostly sunny and a bit warmer with patchy smoke Friday and Saturday, mostly clear with patchy smoke Friday night.
• free air freezing level 15,000 ft. Wednesday AM, snow level above 8,000 ft. Wednesday afternoon through Thursday AM, free air freezing level 13,000 ft. Thursday afternoon and Thursday night, 13,000 ft. rising to 15,000 ft. Friday afternoon, then 15,000 ft. Friday  night and Sunday.
• highs 74-65 warming to 78 Saturday lows 49-44.

 

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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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