Jan
07.
Here is my weekly weather quiz question for the last time. What is “The Pacific Decadal Oscillation “? Here is the correct answer. The Pacific Decadal Oscillation(Abbrev. PDO) – is a recently described pattern of climate variation similar to ENSO though on a timescale of decades and not seasons. It is characterized by SST anomalies of one sign in the north-central Pacific and SST anomalies of another sign to the north and east near the Aleutians and the Gulf of Alaska. It primarily affects weather patterns and sea surface temperatures in the Pacific Northwest, Alaska, and northern Pacific Islands.
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An Upper Level Low Pressure Trough (“U” shape) has moved a little inland sending northerly airflow into the Pacific Northwest. The graphics for days 1-3 show the cold front moving through the Pacific Northwest. The graphics for days 3-7 Wednesday through Sunday show a frontal system moving through Saturday and next Sunday as a backdoor cold front moves in from the north bringing colder air..
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 27 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 27 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 49 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A WINTER STORM WARNING IS IN EFFECT FROM 4 AM MONDAY UNTIL 4 PM MONDAY ABOVE 3,000 FT. FOR THE NORTHERN OREGON CASCADES.
- A WINTER STORM WARNING IS IN EFFECT FROM 4 AM TUESDAY UNTIL UNTIL 4 PM WEDNESDAY ABOVE 1,000 FT. FOR THE NORTHERN OREGON CASCADES.
- A BLIZZARD WARNING IS IN EFFECT FROM 4 AM TUESDAY UNTIL 4 PM WEDNESDAY ABOVE 3,000 FT. FOR THE NORTH OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 4 PM MONDAY ABOVE 3,000 FT. FOR THE CASCADES IN LANE COUNTY.
- A WINTER STORM WARNING IS IN EFFECT FROM 4 AM UNTIL 4 PM MONDAY ABOVE 2,000 FT FOR THE CASCADES IN LANE COUNTY.
- A BLIZZARD WARNING IS IN EFFECT FROM 4 AM TUESDAY UNTIL 4 PM WEDNESDAY ABOVE 3,500 FT FOR THE CASCADES IN LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM UNTIL 4 PM MONDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A BLIZZARD WARNING IS IN EFFECT UNTIL 4 AM TUESDAY UNTIL 4 PM WEDNESDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A BLIZZARD WARNING IS IN EFFECT FROM 4 PM MONDAY UNTIL 10 AM WEDNESDAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WINTER STORM WARNING IS IN EFFECT FROM 4 AM TUESDAY UNTIL 4 AM WEDNESDAY ABOVE 1,500 FT. FOR THE UPPER HOOD RIVER VALLEY.
- A WINTER STORM WATCH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY EVENING FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
- A WINTER STORM WATCH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY EVENING FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM MONDAY UNTIL 7 PM TUESDAY FOR WALLOWA COUNTY, THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
- A HIGH WIND WATCH IS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
- A HIGH WIND WARNING IS IN EFFECT FROM 1 AM TUESDAY UNTIL 1 PM WEDNESDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A WIND ADVISORY IS IN EFFECT FROM 4 AM TUESDAY UNTIL 4 AM WEDNESDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE GRANDE RONDE VALLEY, THE JOHN DAY BASIN, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
- A WIND ADVISORY IS IN EFFECT IS IN EFFECT FROM 4 AM TUESDAY UNTIL 10 AM WEDNESDAY FOR THE LOWER COLUMBIA BASIN.
- A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH LATER TONIGHT FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
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, POOLS 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 with a good (50%) chance of evening rain, rain late tonight (0.25 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Monday (0.50 in. of rain possible), rain Monday night (0.50 in. of rain possible) and breezy Monday night (Wind: SW 15-25 mph gusts to 40 mph),
- Mostly cloudy with AM rain and a slight (20%) chance of thunderstorms, showers and breezy and a bit cooler Tuesday afternoon with a slight (20%) chance of thunderstorms (0.25 in. of rain possible), rain with a slight (20%) chance of evening thunderstorms, rain late at night (0.50 in. of rain possible),
- Mostly cloudy and a bit cooler with rain Wednesday, then rain Wednesday night.
- lows 38-42 cooling back to 36 Wednesday night highs 49-45.
- Mostly cloudy with rain Thursday, rain likely (70%) Thursday night,
- Cloudy with AM rain likely (70%), mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Friday afternoon,rain and snow likely (70%) late at night,
- Mostly cloudy and a bit cooler with rain and snow likely (70%) Saturday, evening rain and snow likely (70%), a good (50%) chance of rain and snow late Saturday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Sunday.
- highs 45-37 lows 37-27. (seasonal averages high 47 low 35)
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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:
- Cloudy with a good (50%) chance of evening rain and snow showers, rain and snow late tonight (under 0.10 in. of rain possible, snow level 2,000 ft., little or no snow accumulation expected),
- Mostly cloudy with rain and a bit warmer Monday (under 0.10 in. of rain possible), rain (0.10 in. of rain possible) Monday night (snow level 3,500 ft. late at night) and breezy (Wind: S 15 mph 15-25 mph gusts to 40 mph),
- Mostly cloudy with rain showers and snow with a slight (20%) chance of thunderstorms and a bit cooler Tuesday and in the evening (0.25 in. of rain possible, snow level ) and breezy (Wind: SW 15-25 mph), rain snow and a slight (20%) chance of thunderstorms late at night (0.50 in. of rain possible, snow level 2,000 ft.),
- Mostly cloudy with rain and snow and a bit cooler Wednesday, then rain and snow Wednesday night.
- lows 36-42 cooling to 34 Tuesday night warming to highs 48-43.
- Mostly cloudy with rain and snow and a bit warmer Thursday, rain and snow likely (70%) Thursday night,
- Mostly cloudy and a bit warmer with rain and snow likely (70%) Friday and at night,
- Mostly cloudy and a bit cooler with rain and snow likely (70%) Saturday, evening snow likely (70%), a good (50%) chance of rain and snow and colder late Saturday night,
- Then mostly cloudy and a bit cooler with a (40%) chance of rain and snow Sunday.
- highs 43-45 lows near 35. (seasonal averages high 49 low 37).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with a slight (20%) chance of early evening coastal showers and coastal rain tonight while inland late evening rain likely (70%) and inland rain late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Monday (0.10 in. of rain possible), evening coastal rain with coastal showers and a slight (20%) chance of thunderstorms late at night while inland rain Monday night (0.50 in. of rain possible) and breezy Monday night (Wind: S 10-15 mph shifting to SW 15-25 mph gusts to 40 mph late at night),
- Mostly cloudy with showers and a slight (20%) chance of thunderstorms and a bit cooler Tuesday (0.25 in. of rain possible) and breezy (Wind: W 15-25 mph), showers with a slight (20%) chance of thunderstorms at night (0.50 in. of rain possible) and breezy (Wind: W 15-25 mph),
- Mostly cloudy with AM showers and a slight (20%) chance of thunderstorms, rain Wednesday afternoon, then rain Wednesday night,
- lows 40-44 cooling back to 40 Tuesday night highs 52-56 cooling to 54 Monday.
- Mostly cloudy with AM rain, rain likely (70%) and a bit warmer Thursday afternoon, rain likely (70%) Thursday night,
- Mostly cloudy with rain likely (70%) and a bit warmer Friday, rain likely (70%) at night,
- Mostly cloudy with rain likely (70%) and a bit cooler Saturday and in the evening, a good (50%) chance of rain late Saturday night,
- Then mostly cloudy with a good (50%) chance of rain Sunday.
- highs near 52 lows near 38. (seasonal averages high 53 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a good (50%) chance of evening snow showers, snow likely (70%) late tonight (1-3 in. of snow possible),
- Mostly cloudy with rain and snow a bit warmer Monday (0.75 in. of rain possible, 2-5 in. of snow possible), rain and snow Monday night (0.75 in. of rain possible, 1-4 in. of snow possible, evening snow blowing snow, visibility, 0.25 of a mile or less), windy (Pass Wind: SW 20-25 mph gusts to 35 mph increasing to SW 20-25 mph gusts to 55 mph late),
- Mostly cloudy with AM rain and snow, snow and blowing snow and a bit cooler Tuesday afternoon (1-4 in. of snow possible, snow possibly heavy at times, visibility (0.25 miles or less) and windy (Pass Wind: W 25-35 mph gusts to 55 mph), snow and blowing snow at night (snow possibly heavy at times, visibility 0.25 miles or less) at night) and windy (Pass Wind: W 20-30 mph gusts to 45 mph),
- Mostly cloudy with AM snow and blowing snow, a bit cooler and blustery with areas of snow and blowing snow Wednesday afternoon (snow possibly heavy at times, visibility 0.25 miles or less) Wednesday, then snow Wednesday night.
- snow level 2,000 ft. tonight, 3,000 ft. rising to 5,500 ft. Monday afternoon, 5,500 ft. Monday night, 2,500 ft. Tuesday, 1,500 ft. Tuesday night, then 2,000 ft. Wednesday and Wednesday night.
- lows 22-26 cooling back to 22 Wednesday night highs 34-26.
- Mostly cloudy and a bit warmer with snow (possibly heavy at times) Thursday and in the evening, snow likely (70%) with a slight (20%) chance of rain late Thursday night,
- Mostly cloudy with AM snow likely (70%) and a slight (20%) chance of rain, a bit warmer with snow and rain likely (70%) Friday afternoon, a good (50%) chance of rain late at night,
- Mostly cloudy with snow likely (70%) and rain likely (70%) and a bit cooler Saturday (snow possibly heavy at times), evening snow and rain likely (70%), a good (50%) chance of snow and rain Saturday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of snow and rain Sunday.
- snow level 2,000 ft. Thursday through Friday night, then 2,500 ft. Saturday through Sunday.
- highs 26-29 cooling to 25 Sunday lows 23-16.
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