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 8 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 0 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:

• Cloudy with a slight (20%) chance of drizzle through early this afternoon, mostly cloudy with possible sun peeks and a bit cooler this afternoon, mostly cloudy tonight,
• Mostly cloudy and a bit cooler Sunday, partly cloudy at night,
• Partly cloudy and a bit warmer Monday, then partly cloudy Monday night.
• highs 68-70 lows 48-42 warming to 44 Monday night.
• Partly cloudy in the AM, mostly sunny and a bit warmer Tuesday afternoon, mostly clear at night,
• Mostly sunny Wednesday AM, partly cloudy and a bit warmer with a slight (20%) chance of showers in the afternoon and evening, cloudy with a (40%) chance of showers late Wednesday night,
• Mostly cloudy with a good (50%) chance of showers AM showers, showers likely (70%) and a bit cooler Thursday afternoon, mostly cloudy with evening showers likely (70%), then a good (50%) chance of showers Thursday night and Friday.
• highs 77-66  lows 47-52 cooling to 46 Thursday night. (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 and a bit cooler this afternoon, a slight (20%) chance of isolated showers late tonight,
• Mostly cloudy and a bit cooler with a slight (20%) chance of isolated showers Sunday, partly cloudy in the evening, mostly clear late Sunday night,
• Partly cloudy Monday AM, sunny and a bit warmer Monday afternoon, partly cloudy in the evening, then mostly clear late at night.
• highs 70-65 warming to 75 Monday lows 50-45 warming to 48 Monday night.
• Mostly sunny and a bit warmer Tuesday,  mostly clear at night,
• Sunny Wednesday AM, partly cloudy and a bit warmer in the afternoon and evening, becoming mostly cloudy with rain likely (70%) late Wednesday night,
• Mostly cloudy with showers likely (70%) and cooler Thursday and at night,
• Then mostly cloudy and a bit warmer with a good (50%) chance of showers Friday.
• highs 82-70 lows 52-54 cooling to 50 Thursday night. (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 patchy lingering fog and a bit cooler this afternoon, a slight (20%) chance of isolated showers tonight,
• Mostly cloudy with a slight (20%) chance of isolated coastal showers in the AM and mostly cloudy in the afternoon, partly cloudy in the evening, mostly clear late Sunday night,
• Then partly cloudy and a bit warmer Monday and at night.
• highs 58-60 lows 50-45 warming back to 50 Monday night.
• Sunny Tuesday, partly cloudy with patchy fog and a bit warmer Tuesday night and Wednesday, partly cloudy in the evening, mostly cloudy with rain likely (70%) late Wednesday night,
• Mostly cloudy with showers likely (60%) and cooler Thursday and Thursday night,
• Then mostly cloudy and a bit warmer with a (40%) chance of showers Friday.
• highs 60-62 lows near 52. (seasonal averages high 61 low 49)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with patchy lingering fog and a slight (20%) chance of drizzle until early this afternoon, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers late this afternoon, mostly cloudy with a slight (20%) chance of showers late tonight,
• A (30%) chance of AM showers, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday afternoon (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of evening showers, partly cloudy and colder at night,
• Partly cloudy and a bit warmer Monday and Monday night.
• snow level above 8,000 ft. today through Sunday night, free air freezing level 12,000 ft. Monday, then 12,000 ft. rising to 13,000 ft. Monday night.
• highs 65-55 warming back to 65 Monday lows 39-30 warming to 40 Monday night.
• Partly cloudy in there AM, mostly sunny and warmer Tuesday afternoon, mostly clear at night,
• Mostly sunny in the AM, partly cloudy and a bit warmer Wednesday afternoon and evening, mostly cloudy with a (40%) chance of showers late Wednesday night,
• Cloudy with a good (50%) chance of AM showers, a bit cooler with showers likely (70%) Thursday afternoon, a (40%) chance of showers late at night and Friday AM, then a good (50%) chance of rain and snow showers and a bit cooler Friday afternoon.
• free air freezing level  13,000 ft. rising to 14,000 ft. Tuesday afternoon, 14,000 ft. Tuesday night, 14,000 ft. falling to 13,000 ft. Wednesday afternoon, snow level above 8,000 ft. Wednesday night and Thursday, above 8,000 ft. falling to 7,000 ft. late Thursday night, then 7,000 ft. falling to 5,500 ft. Friday afternoon.
• highs 67-69 cooling to 50 Friday lows 43-37.

 

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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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