1 tornado, as filed by the National Weather Service.
Every event with a place to put it. 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 Sep 25, 7:45 AM PST, 3 hours 40 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 845 AM PDT TUE SEP 25 2001 UPPER LOW OVER SOUTHWEST OREGON WILL MOVE NORTHEAST ACROSS CENTRAL AND EASTERN OREGON TODAY AND OPEN UP TO A SHORT WAVE. SATELLITE LOOPS INDICATE THE LOW HAS AMPLE MOISTURE ASSOCIATED WITH IT. A SURFACE LOW CURRENTLY OVER THE COLUMBIA BASIN WILL DEVELOP RAPIDLY TODAY. THE SURFACE LOW WILL MOVE NORTH INTO SOUTHERN BRITISH COLUMBIA BY LATE THIS AFTERNOON WITH A SOUTHERLY SURFACE PRESSURE GRADIENT INTENSIFYING DURING THE DAY OVER NORTHERN OREGON AND SOUTH CENTRAL/SOUTHEAST WASHINGTON. THIS WILL RESULT IN SOUTHWEST SURFACE WINDS INCREASING AS THE DAY WEARS ON...BECOMING BREEZY THIS AFTERNOON. BREEZY SOUTHERLY SURFACE WINDS WILL CONTINUE THROUGH THIS EVENING. WITH THE DRY CONDITIONS THAT HAVE PERSISTED OVER THE REGION RECENTLY THE POTENTIAL EXISTS FOR SOME BLOWING DUST IN THE LOWER COLUMBIA BASIN AND FOOTHILLS OF THE BLUE MOUNTAINS TODAY. WILL KEEP AN EYE ON THE SITUATION. DYNAMIC LIFT AND UPPER LEVEL DIFFLUENCE ASSOCIATED WITH THE UPPER SHORT WAVE WILL COMBINE WITH MARGINAL INSTABILITY TO TRIGGER SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS...WHICH WILL SPREAD NORTH OVER THE FORECAST AREA TODAY. THE SURFACE LOW AND UPPER LEVEL SHORT WAVE WILL MOVE INTO BRITISH COLUMBIA TONIGHT. SURFACE PRESSURE GRADIENTS WILL DECREASE AS THE LOW EXISTS THE PACIFIC NORTHWEST...THUS SURFACE WINDS WILL DECREASE OVERNIGHT. A FAST MOVING UPPER SHORT WAVE AND A WEAK COLD FRONT WILL APPROACH THE WASHINGTON COAST TONIGHT AND THEN MOVE NORTHEAST ACROSS NORTHWEST WASHINGTON ON WEDNESDAY. MOST OF THE ENERGY IN THIS SYSTEM WILL REMAIN OVER NORTHWEST WASHINGTON...BUT THE EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES WILL SEE SCATTERED SHOWERS FROM DYNAMIC FORCING ASSOCIATED WITH THE UPPER SHORT WAVE. APPEARS THAT THE KITTITAS AND YAKIMA VALLEYS WILL ALSO HAVE A CHANCE OF SHOWERS FROM THIS SYSTEM ON WEDNESDAY. POLAN PDT 430 ALW 430 PSC 320 YKM 431 .KPDT...WSR-88D...VCP21/CSR21...OPERATIONAL. .KPDT...THE RED FLAG WARNING FOR FIRE WEATHER ZONE 636 WAS CANCELLED.
The Pendleton radar (KPDT), 246 km away, was scanning. The volume nearest the first event began at 19:26 UTC.
1 tornado. Local standard time, as filed.
A weak tornado touched down adjacent to Highway 20 15 miles east of Brothers. Over the course of 5 minutes, it moved north over open ground and caused no damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2001Every state in 2001This day in weather historyThe tornado archive for Oregon, 2001Warnings in Oregon, September 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: 5268727.