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 Aug 4, 1:30 PM PST, 4 hours 54 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT MON AUG 4 2003 A PERSISTENT UPPER LEVEL LOW PRESSURE SYSTEM OFF THE CALIFORNIA COAST IS MOVING NORTHEAST AND APPROACHING THE NORTHERN CALIFORNIA COAST THIS AFTERNOON. THIS WILL SET THE STAGE FOR DIFLUENT FLOW AND LARGE SCALE ASCENT ALOFT OVER CENTRAL OREGON THIS AFTERNOON. THE LOW WILL ALSO TRANSPORT A MID LEVEL MOISTURE PLUME INTO CENTRAL OREGON WHERE STRONG SURFACE HEATING TODAY WILL DESTABILIZE THE ATMOSPHERE. SCATTERED THUNDERSTORMS ARE ALREADY DEVELOPING IN CENTRAL OREGON THIS AFTERNOON. THIS AREA HAS THE POTENTIAL FOR SOME THUNDERSTORMS TO BECOME SEVERE WITH LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN POSSIBLE FOR THE REMAINDER OF THIS AFTERNOON THROUGH THIS EVENING. THE LOW PRESSURE SYSTEM WILL MOVE INTO SOUTHWEST OREGON TONIGHT AND TUESDAY. THE LOW WILL TAP INTO INSTABILITY AND MOISTURE TONIGHT FOR SCATTERED THUNDERSTORMS OVERNIGHT...WITH STORMS MORE NUMEROUS IN CENTRAL OREGON...OVERNIGHT IN CENTRAL AND NORTH CENTRAL OREGON. A MOIST SOUTHERLY FLOW...INSTABILITY AND DYNAMIC LIFT WILL SPREAD ACROSS NORTH CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTHEAST WASHINGTON BY TUESDAY. THIS WILL CREATE CONDITIONS FAVORABLE FOR SCATTERED THUNDERSTORMS EAST OF THE CASCADES ON TUESDAY. SOME THUNDERSTORMS MAY BECOME SEVERE TUESDAY AFTERNOON AND EVENING WITH LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN POSSIBLE. POLAN IN THE EXTENDED...UPPER TROUGH TO STRENGTHEN OVER THE EASTERN PACIFIC THURSDAY AND FRIDAY WITH AN UPPER LOW CENTER SETTING UP ALONG 130W OFF THE OREGON AND WASHINGTON COASTS. THIS WILL KEEP A SOUTH-SOUTHWEST FLOW OVER THE PACIFIC NORTHWEST INTERIOR WITH ENOUGH LINGERING MOISTURE FOR THE DEVELOPMENT OF A FEW SHOWERS OR THUNDERSTORMS. THIS ACTIVITY MAY INCREASE SOME THURSDAY NIGHT IF A WAVE ROTATES AROUND THE UPPER LOW OVER THE PACIFIC NORTHWEST COAST. AT THIS TIME THERE IS SOME SUPPORT FOR THIS UPPER LOW TO SLOWLY DRIFT SOUTHEAST THIS WEEKEND AND THEN INLAND EARLY NEXT WEEK. THIS WOULD INITIALLY CAUSE AN INCREASE IN THE ONSHORE FLOW WHICH WOULD RESULT IN A STABILIZATION OF THE AIR MASS WITH NO SHOWERS AND THUNDERSTORMS EXPECTED. IF THE UPPER LOW DOES DRIFT INLAND THIS COULD LEAD TO A RETURN TO A LOW CHANCE OF SHOWERS OR THUNDERSTORMS MONDAY...BUT FOR NOW WILL ONLY PUT A FEW SHOWERS ALONG THE CASCADE CREST. GKH PDT 2340 ALW 2340 PSC 1220 YKM 1220 .KPDT...NONE.
ORZ041>050-WAZ024>030-051200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 1005 AM PDT MON AUG 4 2003 .DAY ONE...TODAY SCATTERED THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON AND EVENING ACROSS CENTRAL OREGON...MAINLY IN DESCHUTES AND SOUTHERN CROOK COUNTIES. THE AIR MASS IS MOIST AND UNSTABLE...AND A LOW PRESSURE SYSTEM MOVING INTO SOUTHWEST OREGON WILL TRIGGER SCATTERED THUNDERSTORMS IN THIS AREA BY LATE AFTERNOON. SOME THUNDERSTORMS MAY BECOME SEVERE WITH LARGE HAIL...HEAVY RAIN...AND DAMAGING WINDS POSSIBLE. .DAYS TWO THROUGH SEVEN...TONIGHT THROUGH SUNDAY THE LOW PRESSURE SYSTEM WILL MOVE ACROSS OREGON AND SOUTHEAST WASHINGTON TONIGHT AND TUESDAY. SCATTERED THUNDERSTORMS CAN BE EXECTED OVER MOST OF EASTERN OREGON TONIGHT...AND ACROSS EASTERN OREGON AND SOUTHCENTRAL AND SOUTHEAST WASHINGTON ON TUESDAY. SOME THUNDERSTORMS WILL BE STRONG WITH HAIL...HEAVY RAIN...AND GUSTY WINDS POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. SMITH
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
445 PM PDT MON AUG 04 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0318 PM 6 SW CULVER OR .75 INCH HAIL
08/04/03 JEFFERSON REPORTED BY STORM
SPOTTER.
0340 PM 7 SW CULVER OR 1.5 INCH HAIL
08/04/03 JEFFERSON REPORTED BY STORM
SPOTTER.
0355 PM 6 NE MITCHELL OR 1 INCH HAIL
08/04/03 WHEELER REPORTED BY STORM
SPOTTER.The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
A power pole was blown down due to strong winds. In addition, 0.50 inches of rain fell in 15-20 minutes.
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, August 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: 5333550.