1 thunderstorm wind, 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 May 24, 1:30 PM PST, 4 hours 31 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT THU MAY 24 2001 LIFTED INDICES ON THE GOES SOUNDER AT 1900Z WERE 0 TO -5 OVER THE EASTERN THIRD OF OREGON AND 0 TO 5 ELSEWHERE OVER THE FORECAST AREA. CU HAS BEEN DEVELOPING OVER CENTRAL OREGON...THE BLUES...AND THE WALLOWAS...BUT THE CLOUDS ARE SHEARING OFF IN THE EAST WHERE THE GOES DATA INDICATES THE MOST INSTABILITY. MESOETA MODEL FORECAST SOUNDINGS SHOW CAPE VALUES THIS AFTERNOON RANGING FROM 600 40 MILES SOUTH OF RDM TO 2200 J/KG OVER THE WALLOWAS...INDICATING THE POTENTIAL FOR DESTABILIZATION IN THE ATMOSPHERE THIS EVENING. A FEW LIGHTNING STRIKES HAVE OCCURRED OVER THE SE CORNER OF OREGON. THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE BLUES AND WALLOWAS. THE BIGGEST THREAT WILL BE HAIL AND GUSTY WINDS. SOME STORMS MAY ALSO OCCUR OVER CENTRAL OREGON...THE FOOTHILLS OF THE BLUES...AND OVER THE EASTERN PART OF THE COLUMBIA BASIN. AT 1 PM TEMPERATURES WERE 1 TO 11 DEGREES COOLER THAN YESTERDAY. THIS INDICATES COOLER AIR IS BEGINNING TO MOVE INTO THE COLUMBIA BASIN. TEMPERATURES AT 850 ARE FORECAST TO BE SIMILAR TOMORROW BUT THICKNESS DECREASE 40 TO 100 METERS. THIS INDICATES THE COOLING TREND WILL CONTINUE FOR OVERNIGHT LOWS ABOUT 5 DEGREES COOLER THAN TODAY. A FEW SHOWERS WILL OCCUR FRIDAY IN THE LINGERING MOISTURE AND INSTABILITY ENHANCED BY DAY TIME HEATING OVER THE MOUNTAINS. HOWEVER A MUCH BETTER CHANCE FOR PRECIPITATION WILL BE SATURDAY WHEN AN UPPER LEVEL DISTURBANCE MOVES THROUGH. SHOWERS AND POSSIBLY THUNDERSTORMS WILL DEVELOP OVER THE LOWER COLUMBIA BASIN AND ALL OF THE OREGON FORECAST AREA. COONFIELD IN THE EXTENDED...MODELS ALL COMING INTO LINE INDICATING A DECENT UPPER LEVEL WAVE AND SURFACE COLD FRONT TO MOVE ACROSS THE AREA SUNDAY. THIS FRONT SHOULD BE ABLE TO TAP RESIDUAL MOISTURE LEFT OVER FROM SATURDAYS CONVECTION FOR A CONTINUED CHANCE OF SHOWERS MOST AREAS. MAY ALSO BE ENOUGH LINGERING INSTABILITY FOR A FEW THUNDERSTORMS IN THE FAR EAST. UPSLOPE WESTERLY FLOW MONDAY MAY KEEP SOME SHOWERS GOING OVER THE EAST SIDE OF THE CWFA...OTHERWISE EXPECT DRY CONDITIONS. BEYOND MONDAY...MODELS INDICATE A DIRTY... FLAT RIDGE OVER THE AREA FOR DRY AND MORE SEASONAL CONDITIONS. GKH PDT 220 ALW 220 PSC 110 YKM 000 .KPDT...WSR-88D...VCP21/CSR21...OPERATIONAL. .KPDT...NONE. @ RUKWBCe6KDENFXUS66 KPDT 242153 AFDPDT NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT THU MAY 24 2001 LIFTED INDICES ON THE GOES SOUNDER AT 1900Z WERE 0 TO -5 OVER THE EASTERN THIRD OF OREGON AND 0 TO 5 ELSEWHERE OVER THE FORECAST AREA. CU HAS BEEN DEVELOPING OVER CENTRAL OREGON...THE BLUES...AND THE WALLOWAS...BUT THE CLOUDS ARE SHEARING OFF IN THE EAST WHERE THE GOES DATA INDICATES THE MOST INSTABILITY. MESOETA MODEL FORECAST SOUNDINGS SHOW CAPE VALUES THIS AFTERNOON RANGING FROM 600 40 MILES SOUTH OF RDM TO 2200 J/KG OVER THE WALLOWAS...INDICATING THE POTENTIAL FOR DESTABILIZATION IN THE ATMOSPHERE THIS EVENING. A FEW LIGHTNING STRIKES HAVE OCCURRED OVER THE SE CORNER OF OREGON. THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE BLUES AND WALLOWAS. THE BIGGEST THREAT WILL BE HAIL AND GUSTY WINDS. SOME STORMS MAY ALSO OCCUR OVER CENTRAL OREGON...THE FOOTHILLS OF THE BLUES...AND OVER THE EASTERN PART OF THE COLUMBIA BASIN. AT 1 PM TEMPERATURES WERE 1 TO 11 DEGREES COOLER THAN YESTERDAY. THIS INDICATES COOLER AIR IS BEGINNING TO MOVE INTO THE COLUMBIA BASIN. TEMPERATURES AT 850 ARE FORECAST TO BE SIMILAR TOMORROW BUT THICKNESS DECREASE 40 TO 100 METERS. THIS INDICATES THE COOLING TREND WILL CONTINUE FOR OVERNIGHT LOWS ABOUT 5 DEGREES COOLER THAN TODAY. A FEW SHOWERS WILL OCCUR FRIDAY IN THE LINGERING MOISTURE AND INSTABILITY ENHANCED BY DAY TIME HEATING OVER THE MOUNTAINS. HOWEVER A MUCH BETTER CHANCE FOR PRECIPITATION WILL BE SATURDAY WHEN AN UPPER LEVEL DISTURBANCE MOVES THROUGH. SHOWERS AND POSSIBLY THUNDERSTORMS WILL DEVELOP OVER THE LOWER COLUMBIA BASIN AND ALL OF THE OREGON FORECAST AREA. COONFIELD IN THE EXTENDED...MODELS ALL COMING INTO LINE INDICATING A DECENT UPPER LEVEL WAVE AND SURFACE COLD FRONT TO MOVE ACROSS THE AREA SUNDAY. THIS FRONT SHOULD BE ABLE TO TAP RESIDUAL MOISTURE LEFT OVER FROM SATURDAYS CONVECTION FOR A CONTINUED CHANCE OF SHOWERS MOST AREAS. MAY ALSO BE ENOUGH LINGERING INSTABILITY FOR A FEW THUNDERSTORMS IN THE FAR EAST. UPSLOPE WESTERLY FLOW MONDAY MAY KEEP SOME SHOWERS GOING OVER THE EAST SIDE OF THE CWFA...OTHERWISE EXPECT DRY CONDITIONS. BEYOND MONDAY...MODELS INDICATE A DIRTY... FLAT RIDGE OVER THE AREA FOR DRY AND MORE SEASONAL CONDITIONS. GKH PDT 2213 ALW 2213 PSC 1002 YKM 0000 .KPDT...WSR-88D...VCP21/CSR21...OPERATIONAL. .KPDT...NONE.
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Winds from a severe thunderstorm estimated at 70 mph felled several trees just north of Imnaha. Several other locations near town also lost trees and large branches. An estimated 0.8 inches of rain fell in 30 minutes just north of Imnaha.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2001Every state in 2001This day in weather historyWarnings in Oregon, May 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: 5243253.