1 heavy snow, 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, 2 hours 25 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 235 AM PST TUE DEC 4 2001 AREAS OF SNOW ACROSS THE PDT FORECAST AREA THIS MORNING ARE ASSOCIATED WITH A COLD FRONT TRACKING THROUGH THE REGION. ADDITIONALLY...A MINOR DISTURBANCE WILL MOVE THROUGH THE WESTERLY FLOW THIS AFTERNOON AND CONTINUE...THOUGH TO A LESSER EXTENT... SCATTERED PRECIPITATION. THE ZONAL FLOW ALOFT WILL CREATE DOWNSLOPING ALONG THE EAST SLOPES OF THE CASCADES...SIGNIFICANTLY INHIBITING THE SNOWFALL THERE. THE FOOTHILLS AND BLUE MOUNTAINS WILL SEE SOME ENHANCEMENT OF LIFT DUE TO UPSLOPE HOWEVER SNOW AMOUNTS SHOULD REMAIN BELOW ADVISORY LEVELS. SNOW LEVELS AT THE LOWEST ELEVATIONS THIS MORNING MAY RISE TO NEAR 2000 FEET THIS AFTERNOON FOR A SHORT TIME BEFORE LOWERING BACK TO THE VALLEY/BASIN FLOOR FOR TONIGHT. ANOTHER SYSTEM OF INTEREST WILL MOVE INTO THE PACIFIC NORTHWEST OVERNIGHT. DECENT MOISTURE AND LIFT WILL KEEP LIKELY PRECIP IN THE FORECAST...BUT SNOW AMOUNTS ONCE AGAIN ARE EXPECTED TO STAY BELOW ADVISORY LEVELS. PRECIP WILL LINGER INTO WEDNESDAY MORNING...ESPECIALLY OVER THE BLUE MOUNTAINS. A STRONG SYSTEM WILL MOVE ONSHORE DURING THE DAY WEDNESDAY AND WINDS WILL BEGIN INCREASING AND PRECIP WILL REDEVELOP OVER THE AREA LATE IN THE DAY. MJB. .EXTENDED...STRONG JET EXPECTED TO PUSH THROUGH FORECAST AREA WEDNESDAY NIGHT AND THURSDAY. AT THIS TIME...APPEARS HIGH WINDS ARE POSSIBLE OVER THE BASIN THURSDAY MORNING AS A 45-60 KNOT LOW LEVEL JET MOVES THROUGH SOUTHERN WASHINGTON. UPCOMING SHIFTS WILL NEED TO MONITOR MODEL TRENDS CLOSELY. UPPER LEVEL HIGH PRESSURE WILL BUILD OVER MOST OF THE REGION FRIDAY AND SATURDAY FOR A DRYING TREND...EXCEPT MOUNTAINS. THEREAFTER...FIRST IN ANOTHER SERIES OF DISTURBANCES WILL BEGIN AFFECTING THE AREA SUNDAY AND MONDAY. PDT 764 ALW 764 PSC 643 YKM 242 .KPDT...WSR-88D...VCP21/CSR21...OPERATIONAL. .KPDT...NONE.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
26 inches of snow fell over a 24 hour period at Ski Bluewood at an elevation of 4500 feet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2001Every state in 2001This day in weather historyWarnings in Washington, December 2001
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: 5273525.