1 flash flood, 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 Aug 25, 12:25 PM PST, 4 hours 25 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 125 PM PDT SUN AUG 25 2002 SHORT TERM AND FIRE WEATHER...AN UPPER LEVEL SHORT WAVE WILL MOVE ACROSS THE FORECAST AREA THIS AFTERNOON AND TONIGHT. DYNAMIC LIFT AND INSTABILITY ASSOCIATED WITH THE WAVE WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS AS THIS SYSTEM MOVES THROUGH. THE THUNDERSTORMS THIS AFTERNOON AND TONIGHT WILL BE MOSTLY WET AS THE AIR MASS OVER THE AREA IS RATHER MOIST. A WEAK MARINE PUSH WILL BEGIN LATE THIS AFTERNOON ALONG THE EAST SLOPES OF THE CASCADES AND THEN MOVE ACROSS THE REMAINDER OF THE FORECAST AREA THIS EVENING. THIS WILL INCREASE WINDS TONIGHT AND USHER IN A MUCH MORE STABLE AIR MASS FOR MONDAY. THE SHORT WAVE WILL MOVE INTO IDAHO AND MONTANA ON MONDAY WITH NORTHERLY FLOW ALOFT ON THE BACK SIDE OF THE UPPER TROUGH OVER THE FORECAST AREA. ON MONDAY MARGINAL INSTABILITY WILL REMAIN OVER EXTREME NORTHEAST OREGON FOR POSSIBLE ISOLATED THUNDERSTORMS...MAINLY OVER WALLOWA COUNTY. THE UPPER SHORT WAVE WILL STALL OVER MONTANA ON MONDAY BEFORE DIGGING SOUTHWEST INTO IDAHO AND SOUTHEAST OREGON ON TUESDAY. THIS WILL ALLOW SOME WRAP AROUND MOISTURE TO RETURN TO EXTREME EASTERN OREGON FOR SOME SHOWERS AND MOSTLY WET ISOLATED THUNDERSTORMS ON TUESDAY. THE AFOREMENTIONED SHORT WAVE WILL MOVE INTO EASTERN OREGON ON WEDNESDAY FOR A CHANCE OF MAINLY AFTERNOON AND EVENING SHOWERS AND MOSTLY WET THUNDERSTORMS OVER THE MOUNTAINS OF NORTHEAST OREGON. POLAN IN THE EXTENDED...STUBBORN SHORT WAVE/MID LEVEL LOW PRESSURE OVER EASTERN OREGON WILL BEGIN TO WEAKEN AND DRIFT INTO IDAHO THURSDAY. BUT LINGERING MOISTURE REMAINS MAINLY OVER THE EASTERN FORECAST AREA THAT INCLUDES THE BLUE AND WALLOWA MOUNTAINS...WHICH WILL SEE SOME AFTERNOON AND EVENING THUNDERSTORMS. ALSO WITH THE EXITING LOW COMES A LONG WAVE TROUGH ENTERING THE PACIFIC NORTHWEST COAST THURSDAY AFTERNOON AND SOME ISOLATED THUNDERSTORMS MAY DEVELOP OVER THE NORTHERN CASCADES NEAR GOLDENDALE LATE THURSDAY AND INTO THE EVENING. DRIER AIR FILTERS INTO THE CASCADES FRIDAY BUT INSTABILITY PERSISTS OVER THE WALLOWA AND BLUE MOUNTAINS WHERE ISOLATED THUNDERSTORMS ARE POSSIBLE. AS THE TROUGH MOVES EAST AND AWAY FROM THE THE AREA SATURDAY...MUCH DRIER AIR WILL INVADE ALL OF NORTHEAST OREGON AND SOUTHEAST WASHINGTON AND A RETURN TO MOSTLY SUNNY AND WARMER TEMPERATURES ARE LIKELY NEXT WEEKEND. PDT 3000 ALW 3000 PSC 2000 YKM 2000 KPDT...VCP21/PRECIP MODE...OPERATIONAL. .KPDT...NONE.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
425 PM PDT SUN AUG 25 2002
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0423 PM 8 W CULVER OR .75 INCH HAIL
08/25/02 JEFFERSON 7.5 MILES WEST OF
CULVER AT 4:25 P.M.
REPORTED BY STORM
SPOTTER JE-9.The Pendleton radar (KPDT), 141 km away, was scanning. The volume nearest the first event began at 00:48 UTC.
1 flash flood. Local standard time, as filed.
Flash Flooding was reported between Spray and Service Creek.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2002Every state in 2002This day in weather historyWarnings in Oregon, August 2002
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: 5316824.