Here is my weekly weather quiz question for the last time. What is  the “Azores High?” Here is the correct answer. The Azores High is an alternate term for Bermuda High – a semi-permanent, subtropical area of high pressure in the North Atlantic Ocean off the East Coast of North America that migrates east and west with varying central pressure. Depending on the season, it has different names. When it is displaced westward, during the Northern Hemispheric summer and fall, the center is located in the western North Atlantic, near Bermuda. In the winter and early spring, it is primarily centered near the Azores in the eastern part of the North Atlantic. Also known as Azores High. 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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The graphics for days 1-3 show the frontal system that fell apart as it was on its way through Oregon. An Upper Level Low Pressure Trough is moving away from us, but onshore airflow sends moisture our way. The graphics for days 3-7 show the frontal system that will move through the Pacific Northwest next Thursday and Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A Health Advisory has been issued for Detroit Lake, located 46 miles SE of Salem in Marion County. Water monitoring has confirmed the presence of blue-green algae and the toxins they produce in Detroit Lake. These toxin concentrations can be harmful to humans and animals. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.
• 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 cloudy this evening, partly cloudy late tonight,
• Mostly cloudy and a bit warmer Sunday, partly cloudy at night,
• Partly cloudy and a bit warmer Monday and Monday night,
• Partly cloudy in the AM, mostly sunny and a bit warmer Tuesday afternoon, then mostly clear at night.
• lows 48-42 warming to 49 Tuesday night highs 68-78.
• Mostly sunny Wednesday AM, partly cloudy in the afternoon and evening, cloudy with a good (50%) chance of rain late Wednesday night,
• Cloudy with a good (50%) chance of AM rain, showers likely (70%) and cooler Thursday afternoon and evening, a good (50%) chance of showers late Thursday night through Friday night,
• A (40%) chance of AM showers, then showers likely (70%) and a bit warmer Saturday afternoon.
• highs 78-63 warming to 65 Saturday lows 53-47. (seasonal averages high 70 low 46)

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Eugene-Springfield Pollen Count:

Grass………. Moderate (16)

Trees………. Moderate (15)

Last Counted: 6/2/17

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of isolated showers late tonight and Sunday,
• Mostly cloudy and a bit warmer with a slight (20%) chance of isolated showers Sunday, partly cloudy in the evening, mostly clear late Sunday night,
• Partly cloudy and a bit warmer Monday and at night,
• Mostly sunny and a bit warmer Tuesday, then mostly clear Tuesday night.
• lows 50-43 warming back to 52 Tuesday night highs 66-82.
• Sunny Wednesday AM, partly cloudy and a bit warmer in the afternoon and evening, becoming mostly cloudy with rain likely (70%) late Wednesday night,
• Cloudy with a good (50%) chance of AM rain, showers likely (70%) and cooler Thursday afternoon, mostly cloudy with evening showers likely (70%), a good (50%) chance of showers late at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of showers Friday and Friday night,
• AM showers likely (60%), then showers likely (70%) Saturday afternoon.
• highs 82-64 lows 56-49. (seasonal averages high 73 low 50)

 

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

• Mostly cloudy with a slight (20%) chance of isolated showers late tonight,
• Mostly cloudy with a slight (20%) chance of isolated coastal showers in the AM and mostly cloudy and a bit warmer in the afternoon while isolated inland showers and a bit warmer Sunday, partly cloudy in the evening, mostly clear late Sunday night,
• Partly cloudy and a bit warmer Monday and at night,
• Partly cloudy in the AM, sunny Tuesday, partly cloudy with patchy fog and a bit warmer Tuesday night.
• lows 50-45 warming to 52 Tuesday night highs 58-60.
• Partly cloudy with patchy fog Wednesday, partly cloudy in the evening, partly cloudy with rain likely (70%) late Wednesday night and Thursday AM, showers likely (60%) and cooler Thursday afternoon, mostly cloudy with evening showers likely (70%), a good (50%) chance of showers late Thursday night,
• Mostly cloudy with a (40%) chance of showers Friday and Friday night,
• A good (50%) chance of AM showers, then mostly cloudy with showers likely (70%) Saturday afternoon.
• highs 62-59 lows 54-50. (seasonal averages high 61 low 49)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of showers tonight,
• A (30%) chance of AM showers, a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Sunday afternoon (under 0.10 in. of rain possible), partly cloudy and colder at night,
• Partly cloudy and a bit warmer Monday and Monday night,
• Partly cloudy in the AM, mostly sunny and warmer Tuesday afternoon, then mostly clear at night.
• snow level above 8,000 ft. tonight and Sunday, free air freezing level 10,000 ft. Sunday night, 11,000 ft. rising to 12,000 ft. Monday, 12,000 ft. rising to 13,000 ft. Monday night, 13,000 ft. Tuesday, then 13,000 ft. rising to 14,000 ft. Tuesday night.
• lows 39-30 warming to 42 Tuesday night highs 55-73.
• Mostly sunny in the AM, partly cloudy and a bit warmer with a slight (20%) chance of  showers Wednesday afternoon and evening, mostly cloudy with a (40%) chance of rain late Wednesday night,
• Cloudy with a good (50%) chance of AM rain, a bit cooler with showers likely (70%) Thursday afternoon, a (40%) chance of showers late at night and Friday AM, showers likely (70%) and a bit cooler Friday afternoon and evening, a good (50%) chance of rain and snow showers late at night,
• Cloudy with a good (50%) chance of AM rain and snow showers, then rain and snow showers likely (70%) and a bit cooler Saturday afternoon.
• snow level above 8,000 ft. Wednesday through Thursday, above 8,000 ft. falling to 7,000 ft. late Thursday night, 7,000 ft. falling to 6,000 ft. Friday afternoon, 6,000 ft. falling to 4,500 ft. Friday night, then 4,500 ft. Saturday.
• highs 74-47 lows 46-35.

 

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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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