Dec
08.
Here is my weekly weather quiz question for the last time. What is an “Omega High?” Here is the correct answer. An Omega High is a warm high aloft which has become displaced and is on the polarward side of the jet stream. It frequently occurs in the late winter and early spring in the Northern Hemisphere. The name comes from its resemblance to the Greek letter, Omega, when analyzed on upper air charts. It is an example of a blocking high.
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Frontal systems are moving through Oregon bringing rain and they will be pushed by Atmospheric Rivers. The graphics for days 1-3 show a complex frontal system slowly pushing through the Pacific Northwest Saturday and Sunday. The graphics for days 3-7 Tuesday through Saturday show frontal systems sliding through Oregon next Thursday and Saturday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 26 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 5 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality is 10 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A FLOOD WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY EVENING FOR THE NORTH OREGON COAST AND THE COAST RANGE OF NORTHWEST OREGON.
HEALTH ADVISORIES:
- A PUBLIC HEALTH ADVISORY IS IN EFFECT FOR UNSAFE LEVELS OF FECAL BACTERIA IN OCEAN WATERS AT BEVERLY BEACH IN LINCOLN COUNTY. PEOPLE SHOULD AVOID DIRECT CONTACT WITH THE WATER IN THIS AREA UNTIL THE ADVISORY IS LIFTED. UNSAFE LEVELS OF FECAL BACTERIA CAN CAUSE DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. CHILDREN, THE ELDERLY, AND THOSE WITH A COMPROMISED IMMUNE SYSTEM SHOULD USE EXTRA CAUTION AS THEY ARE MORE VULNERABLE TO TO ILLNESSES FROM WATERBORNE BACTERIA. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER, AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.
- A RECREATIONAL USE HEALTH ADVISORY HAS BEEN EXPANDED FOR THE AREA FROM THE ROSS ISLAND LAGOON TO RIVERPLACE MARINA IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS CATCH AND RELEASE FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS. DRINKING WATER FROM THE LAKE IS ESPECIALLY DANGEROUS.
- A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER FROM ROSS ISLAND DOWNSTREAM (NORTH) TO THE AREA NEAR CATHEDRAL PARK IN PORTLAND, IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.DO NOT DRINK THE WATER.
- A RECREATIONAL USE HEALTH ADVISORY CONTINUES IN EFFECT FOR ARRONS LAKE, BUT HAS BEEN LIFTED FOR PETE’S SLOUGH AND STURGEON LAKE ON SAUVIE ISLAND DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
- A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR AGENCY LAKE AND EXTENDED THE ADVISORY FOR THE SOUTHERN PORTION OF UPPER KLAMATH LAKE, FROM HOWARD’S BAY SOUTH TO THE LINK RIVER DAM IN KLAMATH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE RESERVOIR WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER 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 and a bit cooler with a good (50%) of rain today (0.25 in. of rain possible), rain tonight (0.75 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Sunday (0.50 in. of rain possible), rain at night (0.25 in. of rain possible),
- Mostly cloudy with a good (50%) of AM rain, a slight (20%) chance of rain Monday afternoon, then just mostly cloudy Monday night.
- highs 48-54 lows 44-46 cooling to 40 Monday night.
- Mostly cloudy start, partly cloudy and a bit cooler Tuesday afternoon, partly cloudy with a slight (20%) of rain Tuesday night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Wednesday and in the evening, mostly cloudy with a slight (20%) chance of rain at night,
- Clouds and sun with a slight (20%) chance of AM rain, a mix of clouds and sun Thursday afternoon, partly cloudy Thursday night,
- Then a mix of clouds and sun with a slight (20%) chance of rain Friday night.
- highs 49-50 lows 36-38 cooling to 33. (seasonal averages high 47 low 35)
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Your Local College Football Games Weather Forecast:
THE VRBO FIESTA BOWL
Oregon Ducks vs. Liberty Flames at AT&T Stadium, Dallas, TX. – Game time: 10 am – Way to early for a preliminary weather forecast. The weather forecast will be inconsequential because the stadium has a roof.
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Home Wood Heating Advisory:
Eugene-Springfield: GREEN – Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Forecast for the Umpqua Valley including Roseburg:
- Areas of AM fog, cloudy and a bit cooler with a slight (20%) chance of rain this afternoon, a (30%) of rain tonight (0.10 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Sunday and in the evening (0.25 in. of rain possible), a good (50%) chance of rain late at night (0.10 in. of rain possible),
- Mostly cloudy with a (30%) chance of AM rain, a slight (20%) chance of rain and a bit warmer Monday afternoon, then mostly cloudy with patchy fog Monday night.
- highs 48-52 lows 43-47 cooling to 42 Monday night.
- Partly cloudy with patchy AM fog, sunny Tuesday afternoon, partly cloudy in the evening, mostly cloudy late Tuesday night,
- Mostly cloudy with a slight (20%) chance of rain Wednesday, a (30%) chance of rain at night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon, mostly cloudy late Thursday night,
- Mostly cloudy start, partly cloudy and a bit warmer with a slight (20%) chance of rain Friday afternoon.
- highs 52-50 warming back to 52 Friday lows 38-40 cooling to 36 Thursday night. (seasonal averages high 48 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Areas of AM fog, cloudy with a (30%) chance of rain and a bit warmer this afternoon (under 0.10 in. of rain possible), evening coastal rain with coastal rain late tonight while a (30%) chance of inland rain tonight (0.25 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Sunday (0.50 in. of rain possible), rain at night (0.25 in. of rain possible),
- Mostly cloudy with a (40%) chance of AM rain, a bit cooler with a slight (20%) chance of showers Monday afternoon, then just mostly cloudy late Monday night.
- highs 56-59 lows 48-49 cooling to 42 Monday night.
- Partly cloudy and a bit warmer Tuesday, partly cloudy Tuesday night,
- Mostly cloudy and a bit cooler with a (40%) chance of rain Wednesday, a good (50%) chance of rain at night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit warmer with a slight (20%) chance of rain Thursday afternoon, just partly cloudy Thursday night,
- Then partly cloudy and a bit warmer with a slight (20%) chance of rain Friday.
- highs 60-58 warming to 62 Friday lows near 42. (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Cloudy with a good (50%) chance of rain and snow and a bit cooler today (0.10 in. of rain possible), a good (50%) chance of evening rain with snow, rain and snow likely (70%) late tonight (0.75 in. of rain possible, 1 in. of snow possible),
- Mostly cloudy with rain and a bit warmer Sunday, rain at night,
- Mostly cloudy with AM showers, a slight (20%) chance of rain with snow likely (70%) Monday, partly cloudy with a (40%) chance of evening snow showers with a slight (20%) chance of rain showers, then just partly cloudy late Monday night.
- snow level 2,500 ft. rising to 4,500 ft. this afternoon, 6,000 ft. tonight, 7,000 ft. Sunday, 6,000 ft. Sunday night, 5,500 ft. Monday, then 5,000 ft. Monday night.
- highs 37-39 lows 32-33 cooling to 26 Monday night.
- Partly cloudy and a bit cooler Tuesday, partly cloudy Tuesday night,
- Clouds and sun with a slight (20%) chance of AM rain and snow, a bit warmer with a (40%) chance of rain and snow Wednesday afternoon, a (40%) chance of rain and snow at night,
- A mix of clouds and sun and a bit cooler with a (30%) chance of snow and a slight (20%) chance of rain Thursday, partly cloudy with a slight (20%) chance of evening rain and snow showers, just partly cloudy late Thursday night,
- Partly cloudy with a slight (20%) chance of AM rain showers and snow showers, then a (30%) chance of showers Friday afternoon.
- free air freezing level 9,000 ft. Tuesday and Tuesday night, snow level 5,500 ft. Wednesday, then 5,000 ft. Wednesday night through Friday.
- highs 37-40 cooling to 38 Friday lows near 25.
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