Here is my weekly weather quiz question. What is the “Beaufort Scale?” 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 soon (middle of the week) be replacing the high pressure ridge (Shaded “Arch” shape with blue arrows) that has started heating us up a bit again. The graphics for days 3-7 show a frontal system moving through between Friday and Saturday with more fronts coming early next week.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A FIRE WEATHER WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR THE SOUTHWEST OREGON COAST RANGE MAINLY ABOVE 2,000 FT., THE WESTERN ROUGE RIVER AND THE SISKIYOU NATIONAL FOREST.
• 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,
• AM clouds, mostly sunny Thursday afternoon, mostly clear at night,
• Partly cloudy Friday AM, sunny in the afternoon, clear in the evening, then mostly cloudy late Friday night.
• highs near 86 lows 54-50.
• Partly cloudy Saturday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Saturday night,
• AM clouds, mostly sunny and a bit warmer Sunday afternoon, then partly cloudy and  bit warmer Sunday night through Tuesday.
• highs 82-86 lows 49-52. (seasonal averages high 83 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 and a bit warmer with patchy smoke today, clear with more patchy smoke tonight,
• AM clouds and patchy smoke, sunny and a bit warmer with patchy smoke Thursday afternoon, mostly clear with patchy fog late Thursday night,
• Mostly sunny with patchy smoke Friday, then mostly clear with patchy fog at night.
• highs 88-90 lows 55-59 cooling to 57 Friday night.
• Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
• Partly cloudy and a bit cooler Sunday, partly cloudy at night,
• Partly cloudy and a bit warmer Monday through Tuesday.
• highs 87-90 cooling to 88 Tuesday lows 56-58. (seasonal averages high 85 low 56)

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

• Partly cloudy with patchy coastal fog this AM, mostly sunny this afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late tonight,
• AM clouds with patchy coastal fog, mostly sunny Thursday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late at night,
• Partly cloudy with patchy AM coastal fog, mostly sunny Friday afternoon, mostly clear in the evening,  then partly cloudy late Friday night.
• highs 68-66 lows 53-55.
• Partly cloudy Saturday through Tuesday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Mostly sunny with patchy smoke and a bit warmer today and Thursday, mostly clear with  patchy smoke late at night,
• Sunny and a bit warmer Friday, then clear Friday night.
• free air freezing level above 12,000 ft. today through Friday night,
• highs 73-76 lows near 46.
• Mostly sunny and a bit cooler Saturday, mostly clear at night,
• Mostly sunny Sunday, mostly clear  Sunday night,
• Mostly sunny and a bit warmer Monday, partly cloudy at night,
• AM sun, then partly cloudy Tuesday afternoon.
• free air freezing level above 12,000 ft. Saturday through Tuesday.
• highs 72-78 lows 45-47.

 

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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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