Jan
12.
Here is my weekly weather quiz question for the last time. What is “The Palmer Drought Severity Index “? Here is the correct answer.
Palmer Drought Severity Index(Abbrev. PDSI) – is an index used to gage the severity of drought conditions by using a water balance equation to track water supply and demand. This index is calculated weekly by the National Weather Service.
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An Upper Level High Pressure Ridge (“Arch” shape) has moved along the coast sending northerly airflow into the Pacific Northwest. The graphics for days 1-3 show a frontal system moving through the Pacific Northwest from the north today, a backdoor front, bringing colder air. The graphics for days 3-7 Monday through Friday show a the parade of frontal systems approaching the Pacific Northwest.
Note: Due to the heavy snowfall in the area Willamette Pass, Hoodoo, and Mt Ashland are all open for skiing, if you can get there through the snow. Check their web pages for details.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 23 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 8 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A BLIZZARD WARNING IS IN EFFECT FROM 7 AM TODAY UNTIL MIDNIGHT SATURDAY NIGHT FOR THE WESTERN COLUMBIA RIVER GORGE.
- AN ICE STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE CENTRAL COAST RANGE OF WESTERN OREGON.
- **AN ICE STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH WILLAMETTE VALLEY.**
- A WINTER STORM WARNING IS IN EFFECT FROM 7 AM UNTIL 10 PM TODAY FOR THE GREATER PORTLAND METRO AREA.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE CENTRAL WILLAMETTE VALLEY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 PM TODAY UNTIL 4AM SUNDAY FOR THE GRANDE RONDE VALLEY.
- A WIND CHILL ADVISORY IS IN EFFECT THIS MORNING FOR GRANDE RONDE VALLEY AND WALLOWA COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE JOHN DAY BASIN.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 5 AM MST SUNDAY FOR BAKER COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE CASCADE FOOTHILLS IN LANE COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE OCHOCO AND THE JOHN DAY HIGHLANDS.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR CENTRAL OREGON.
- A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TODAY UNTIL 4 AM SUNDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 5 AM MST SUNDAY FOR HARNEY COUNTY AND MALHEUR COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A BACKCOUNTRY AVALANCHE WARNING IS IN EFFECT UNTIL 7 AM TODAY FOR THE BLUE MOUNTAINS.
- A BACKCOUNTRY AVALANCHE WARNING IS IN EFFECT UNTIL 7 AM TODAY FOR THE WALLOWA MOUNTAINS NORTH, THE WALLOWA MOUNTAINS SOUTH, AND THE ELKHORN MOUNTAINS.
- A WIND CHILL ADVISORY IS IN EFFECT FROM UNTIL 4 AM SUNDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
- A WIND CHILL ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE LOWER COLUMBIA BASIN OF OREGON, AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WIND CHILL ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR CENTRAL OREGON.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 AM UNTIL 10 PM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 AM UNTIL 10 PM TODAY FOR THE LOWER COLUMBIA.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE UPPER HOOD RIVER VALLEY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND CENTRAL DOUGLAS COUNTY.
- A WIND CHILL ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.TONIGHT ABOVE 4,500 FT. FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
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 and much cooler with rain, freezing rain today with afternoon sleet (0.75 in. of rain possible, up to 1 in. of sleet accumulation possible, 0.10 in. to 0.50 in. of ice possible), freezing rain, sleet and rain and snow tonight (0.25 in. of rain possible, up to 0.10 in. of ice accumulation possible),
- Mostly cloudy with a slight (20%) chance of AM snow, mostly cloudy and a bit warmer Sunday afternoon (just mostly cloudy at night,
- highs 32-34 lows 23-26 cooling to 21 Monday night.
- Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) a bit warmer Tuesday afternoon, rain Tuesday night,
- Mostly cloudy with AM rain, a bit warmer Wednesday with a good (50%) chance of afternoon rain, a good (50%) chance of rain Wednesday night,
- Cloudy and a bit warmer with a good (50%) chance of rain Thursday, mostly cloudy with a good (50%) chance of rain Thursday night,
- Then mostly cloudy and a bit warmer with a good (50%) chance of rain Friday.
- highs 42-47 warming to 49 Friday lows 35-39. (seasonal averages high 48 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:
- Mostly cloudy with AM rain, showers and a bit warmer this afternoon (0.75 in. of rain possible, ice accumulation 0.25 in.), evening showers, a good (50%) chance of rain and snow showers late tonight (0.25 in. of rain possible, snow level 2,000 ft. late tonight, no snow accumulation expected),
- Mostly cloudy with a (40%) chance of AM rain and snow showers, a bit cooler with a slight (20%) chance of showers Sunday afternoon (under 0.10 in. of rain possible), just mostly cloudy Sunday night,
- Mostly cloudy start, partly cloudy Monday afternoon (Martin Luther King, Jr. Day), partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain and snow late Monday night.
- highs 50-47 lows near 35.
- Mostly cloudy with a slight (20%) chance of AM rain, rain and a bit warmer Tuesday, rain Tuesday night,
- Mostly cloudy with AM rain, a good (50%) of rain and a bit warmer Wednesday afternoon, a (40%) chance of rain at night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Thursday, a (30%) chance of rain Thursday night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of rain Friday.
- highs 48-57 lows 44-42 warming to 45 Friday. (seasonal averages high 50 low 37).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM coastal rain and coastal showers a bit cooler this afternoon while inland showers and a slight (20%) chance of thunderstorms today (1.25 in. of rain possible, heavy rain possible in inland storms), coastal showers likely (70%) tonight while inland evening showers and inland showers likely (70%) late tonight (0.25 in. of rain possible, snow level 2,000 ft. late tonight),
- Mostly cloudy and a bit cooler with a (30%) chance of showers Sunday (under 0.10 in. of rain possible AM snow level 1,000 ft.), just mostly cloudy at night,
- Mostly cloudy start, partly cloudy and a bit warmer Monday afternoon (Martin Luther King, Jr. Day), then mostly cloudy with a (0%) chance of rain late Monday night.
- highs 55-49 warming back to 55 Monday lows 39-36.
- Mostly cloudy with a AM rain likely (70%), rain and a bit warmer Tuesday afternoon, rain Tuesday night,
- Mostly cloudy with AM rain, a good (50%) of rain and a bit warmer Wednesday afternoon, a good (50%) chance of rain at night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Thursday, a (30%) chance of rain Thursday night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of rain Friday.
- highs 56-62 lows 45-43 warming to 47 Thursday night. (seasonal averages high 54 low 41)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Cloudy with AM sleet, a bit cooler with rain and snow with blowing snow this afternoon (1.50 in. of rain possible, 3-7 in. of snow possible, snow possibly heavy at times, visibility 0.25 mi. or less), evening sleet with patchy blowing snow, snow and rain late tonight, visibility 0.25 mi. or less (0.50 in. of rain possible, 2-5 in. of snow possible),
- Mostly cloudy with AM rain and snow likely (70%), mostly cloudy and a bit cooler with a good (50%) of rain and snow Sunday afternoon, mostly cloudy in the evening, just partly cloudy late at night,
- Partly cloudy Monday (Martin Luther King, Jr. Day), then partly cloudy Monday night.
- snow level 3,000 ft. today and tonight, 2,500 ft. Sunday, 2,500 ft. Sunday night, 3,500 ft.Sunday night and Monday, then 3,500 ft. Monday night,
- highs 34-33 lows 28-18 warming to 20 Monday night.
- Clouds and sun with with a good (50%) chance of AM rain and snow, a mix of clouds and sun and a bit warmer with rain likely (70%) Tuesday afternoon, rain and snow Tuesday night,
- Mostly cloudy with rain and snow and a bit cooler Wednesday, a good (50%) chance of rain and snow at night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Thursday, a good (50%) chance of rain and snow Thursday night,
- Mostly cloudy with a (40%) chance of AM snow, then a (40%) chance of rain and a bit warmer Friday afternoon.
- snow level 4,500 ft. Tuesday, 6,500 ft. Tuesday night, 6,000 ft. Wednesday and Wednesday night, 6,500 ft. Thursday, then 7,000 ft. Thursday night and Friday.
- highs 36-34 warming to 40 Friday lows 30-28 warming to 40 Friday.
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