1 dense fog, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pendleton, OR wrote its last area forecast discussion before the first event at Dec 4, 2:35 AM PST, 1 hour 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 235 AM PST SUN DEC 4 2005 .SHORT TERM...TODAY THROUGH TUESDAY. THE UPPER LEVEL TROUGH RESPONSIBLE FOR THE SNOW SHOWERS THE PAST FEW DAYS IS FINALLY EXITING THE REGION. HOWEVER...STRONG OROGRAPHIC LIFT AND MOISTURE CONTINUES TO BRING SCATTERED SNOW SHOWERS IN THE JOHN DAY BASIN AND THE STRAWBERRY WILDERNESS REGION. INFRARED SATELLITE SHOWS DRIER AIR SPREADING ACROSS EASTERN WASHINGTON AND NORTHERN OREGON THAT WILL SOON SPREAD SOUTH AND END THE PRECIPITATION. WILL KEEP ISOLATED SNOW SHOWERS OVER THE JOHN DAY BASIN AND HIGHLANDS THIS MORNING. ONLY PRECIPITATION THE REMAINDER OF THE DAY WILL BE ISOLATED SNOW SHOWERS ALONG THE EAST SLOPES OF THE CENTRAL WA CASCADES AS A WARM FRONT OVER NW WASHINGTON WILL BRUSH ACROSS THIS AREA. MAIN WEATHER CHALLENGE FOR THE SHORT TERM WILL BE THE COLD AIR THAT WILL SPREAD ACROSS EASTERN WASHINGTON AND NE OREGON ON TUESDAY. UNTIL THEN...EASTERN WA/OR WILL BE ON THE EAST SIDE OF AN UPPER RIDGE WITH A NW FLOW ALOFT OVER THE REGION. A SERIES OF WAVES MOVING ACROSS NORTHERN IDAHO MAY BRING A FEW SHOWERS OVER THE NW BLUE MOUNTAINS OF WASHINGTON AND THE WALLOWA MOUNTAINS. A SHALLOW INVERSION WILL DEVELOP TONIGHT AND AGAIN ON MONDAY NIGHT RESULTING IN PATCHY FOG ACROSS PORTIONS OF THE COLUMBIA BASIN. THE INVERSION WILL ALSO INHIBIT WARMING ACROSS THE BASIN DESPITE THE SLIGHT INCREASE IN HEIGHTS. A NORTHERLY SURFACE GRADIENT WILL TIGHTEN ACROSS EASTERN WASHINGTON ON TUESDAY. THIS WILL DRAW COOLER AIR ACROSS THE FORECAST AREA...ESPECIALLY IN OUR NORTHERN ZONES. IT WILL BE A CLEAR AND COLD DAY TUESDAY. SMITH .LONG TERM...MODELS DIFFER IN HOW TO HANDLE THE WEATHER SYSTEM ON WEDNESDAY. GFS AND CANADIAN BRING THE SYSTEM TO THE COAST (CLIPPING CENTRAL OREGON) THEN DIVE IT INTO CALIFORNIA WHILE UK AND ECMWF BRING THE SYSTEM MORE THROUGH THE PACIFIC NORTHWEST THEN DROP IT INTO THE SOUTHWESTERN USA. FOR NOW HAVE LEFT FORECAST AS IS WHICH INDICATES BEST CHANCE OF PRECIPITATION WEDNESDAY IN CENTRAL OREGON AND NEAR THE CASCADES. FOLLOWING THAT IT LOOKS LIKE HIGH PRESSURE WILL DOMINATE THROUGH THE REST OF THE EXTENDED PERIOD. THIS WILL LEAD TO THE DEVELOPMENT OF MORE FOG AND LOW CLOUDS IN THE COLUMBIA BASIN. 91 && .AVIATION...VFR CONDITIONS WILL PREVAIL THROUGH THE NEXT 24 HOURS WITH LIGHTER WINDS AND CLEAR TO PARTLY CLOUDY SKIES. THERE WILL BE SOME PATCHY COLUMBIA BASIN FOG THROUGH EARLY THIS MORNING WHICH WILL MAINLY AFFECT KPSC AND KYKM...AND TWEB ROUTE 355 FROM KYKM-KPSC. PATCHY FOG WILL REFORM AGAIN TONIGHT. 91 && .PRELIMINARY POINT TEMPS/POPS... PDT 38 26 38 23 / 10 10 10 10 ALW 37 26 37 23 / 10 10 10 10 PSC 37 25 37 21 / 10 10 10 10 YKM 36 20 36 16 / 10 10 10 10 HRI 38 24 38 22 / 10 10 10 10 ELN 34 16 34 17 / 10 10 10 10 RDM 36 15 38 18 / 10 10 10 10 LGD 34 22 35 23 / 10 10 10 20 5J0 33 18 34 21 / 20 10 10 10 DLS 42 27 42 24 / 10 10 10 10 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && TI:GGG FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON 85/91/91
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 255 PM PST SAT DEC 3 2005 WAZ024-501-502-026>030-ORZ041>044-049-050-501>506-041315- EAST SLOPES OF THE CENTRAL CASCADES- EAST SLOPES OF THE SOUTHERN CASCADES-KITTITAS VALLEY- YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON- FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- NORTHWEST BLUE MOUNTAINS-EASTERN COLUMBIA RIVER GORGE OF OREGON- NORTH CENTRAL OREGON-CENTRAL OREGON- LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY- FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON- NORTHERN BLUE MOUNTAINS OF OREGON- SOUTHERN BLUE MOUNTAINS OF OREGON- NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN- OCHOCO-JOHN DAY HIGHLANDS- 255 PM PST SAT DEC 3 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...THIS AFTERNOON AND TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. SNOW SHOWERS WILL CONTINUE OVER THE BLUE AND WALLOWA MOUNTAINS AS WELL AS THE EAST SLOPES OF THE CASCADES WITH LITTLE ADDITIONAL ACCUMULATION EXPECTED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. OTHER THAN ISOLATED MOUNTAIN SNOW SHOWERS SUNDAY AND MONDAY...DRY CONDITIONS WILL PREVAIL THROUGH MOST OF NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS ARE DISPLAYED ON THE WORLD WIDE WEB AT: WWW.WRH.NOAA.GOV/PENDLETON/CURRENTHAZARDS/HWO.HTML ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN CURRENTHAZARDS.
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Poor visibility contributed to a two vehicle fatal accident 2 miles west of Umatilla.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2005Every state in 2005This day in weather historyWarnings in Oregon, December 2005
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5482945.