1 debris flow, as filed by the National Weather Service.
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, 1:45 PM PST, 3 hours 10 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 245 PM PDT SAT MAY 24 2003 A FAIRLY DEEP TROUGH IS OFF THE WEST COAST AND BECOMING NEGATIVELY TILTED WITH TIME. THE MAIN LOW IS EXPECTED TO MOVE INTO BRITISH COLUMBIA...HOWEVER A SERIES OF WEAK SHORT WAVES WILL AFFECT THE WEATHER ACROSS THE CWFA THE NEXT 36 HOURS. THE ASSOCIATED COLD FRONT WILL WEAKEN AND MOVE ACROSS THE REGION OVERNIGHT AND BE EAST OF THE CWFA BY SUNDAY MORNING. HOWEVER THIS WILL BE THE FOCUSING POINT FOR CONVECTION THE REMAINDER OF THE AFTERNOON AND OVERNIGHT. HIGH INSTABILITY PARAMETERS IN CONJUNCTION WITH MID 50S PLUS DEWPOINTS AND A SURFACE BOUNDARY WILL RESULT IN AREAS OF DEEP CONVECTION. CURRENTLY SPC HAS A LARGE PORTION OF EASTERN OREGON/WASHINGTON IN A SEVERE THUNDERSTORM WATCH THROUGH 1900 LOCAL TIME TONIGHT. THE ATMOSPHERE WILL BEGIN TO STABILIZE BEHIND THE COLD FRONT...BUT SHOWERS AND THUNDERSTORMS ARE EXPECT TO LINGER THROUGH EARLY SUNDAY ACROSS THE SOUTHEAST PORTIONS OF THE ZONE. EXPECT A 8-12 DEGREE COOL DOWN ON SUNDAY FOLLOWED BY A COUPLE DEGREE WARMING ON MONDAY. BREEZY WINDS CAN ALSO BE EXPECTED IN THE USUAL LOCATIONS WITH AND BEHIND THE FRONTAL PASSAGE. TOBIN DAYS 3-7...A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE WESTERN U.S...CENTERED OVER THE GREAT PLAINS REGION ON TUESDAY. THE RIDGE WILL SLOWLY SHIFT EAST THROUGH THE PERIOD AS AN UPPER LEVEL TROUGH REMAINS OFF COAST. A SERIES OF DISTURBANCES WILL BE KICKED OUT OF THE TROUGH...MOST WILL TRACK WELL TO OUR NORTH THROUGH ONE MAY BRUSH ACROSS OUR WASHINGTON CASCADES ON WEDNESDAY. THIS WEATHER PATTERN WILL PROVIDE GENERALLY DRY AND WARM CONDITIONS THROUGH THE EXTENDED PERIOD. MJB. PDT 3200 ALW 3200 PSC 2100 YKM 2100 .KPDT...NONE.
ORZ041>050-WAZ024>030-251300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 500 AM PDT SAT MAY 24 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE... SATURDAY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND THIS EVENING OVER THE MOUNTAINS OF NORTHEAST OREGON. THE SHOWERS AND THUNDERSTORMS WILL MOVE NORTHEAST INTO SOUTHEAST WASHINGTON THIS EVENING. A COLD FRONT WILL SWEEP ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. A VERY MOIST AND UNSTABLE AIR MASS HAS MOVED INTO THE REGION AHEAD OF THE FRONT AND THIS WILL SET THE STAGE FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS...WHICH WILL HAVE THE POTENTIAL FOR PRODUCING LARGE HAIL AND DAMAGING WINDS THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE LIKELY THIS AFTERNOON AND THIS EVENING TO DEAL WITH POSSIBLE SEVERE WEATHER ASSOCIATED WITH THUNDERSTORMS. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
534 PM PDT SAT MAY 24 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0235 PM DALE OR 1 INCH HAIL
05/24/03 GRANT REPORTED ON HWY 395 BY
PUBLIC.
0355 PM 5 E BEND OR 1 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0355 PM 2 SE PRINEVILLE OR .5 INCH HAIL
05/24/03 CROOK REPORTED BY STORM
SPOTTER.
0355 PM 5 ENE BEND OR .5 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0407 PM 10 E PILOT ROCK OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0410 PM ADAMS OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0412 PM ATHENA OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
534 PM PDT SAT MAY 24 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0235 PM 2 NW DALE OR 1 INCH HAIL
05/24/03 UMATILLA REPORTED ON HWY 395 BY
PUBLIC.
0355 PM 5 E BEND OR 1 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0355 PM 2 SE PRINEVILLE OR .5 INCH HAIL
05/24/03 CROOK REPORTED BY STORM
SPOTTER.
0355 PM 5 ENE BEND OR .5 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0407 PM 10 E PILOT ROCK OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0410 PM ADAMS OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0412 PM ATHENA OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.1 debris flow. Local standard time, as filed.
Heavy rains in Grant county led to some problems on county roads. A mudslide resulted in two feet of mud over highway 26 from milepost 148 to 151. In addition, a rock slide occurred on highway 395 at milepost 115.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2003Every state in 2003This day in weather historyWarnings in Oregon, May 2003
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: 5356797.