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 Oct 4, 1:15 PM PST, 1 hour 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OREGON 215 PM PDT SAT OCT 4 2003 .SHORT TERM... ELONGATED SHORTWAVE TROUGH APPROACHING THE FORECAST AREA THIS AFTERNOON. LARGE-SCALE LIFT AND OROGRAPHIC FORCING COUPLED WITH MARGINAL INSTABILITY HAS LED TO ISOLATED-WIDELY SCATTERED SHOWERS AND THUNDERSTORMS OVER NORTHEAST OREGON. THIS TREND EXPECTED TO CONTINUE THROUGH THE EVENING HOURS WITH WEAK UPWARD MOTION FIELD TO REMAIN OVER THE AREA. WILL MAINTAIN ISOLATED SHOWERS LATE EVENING AND OVERNIGHT AS BOTH THE ETA/GFS MAINTAIN SOME QPF...ALTHOUGH ANY LATE NIGHT ACTIVITY SHOULD BE SPOTTY AND LIGHT. ON SUNDAY THE REGION WILL BE IN A LULL BETWEEN AN UPPER LOW TO THE SOUTH AND MAIN BRANCH OF WESTERLIES OVER WESTERN CANADA. WAS TEMPTED TO REMOVE POPS...BUT ETA MAINTAINS SOME RESIDUAL MOISTURE/WEAK INSTABILITY IN THE EAST SO WILL KEEP LOW POPS THERE. SUNDAY NIGHT AND MONDAY LOOK DRY BEFORE A COLD FRONT APPROACHES MONDAY NIGHT. ON MONDAY NIGHT THERE WILL BE A CHANCE OF SHOWERS WASHINGTON CASCADES WITH THE FRONT. TEMPERATURES BEFORE THE FRONTAL PASSAGE WILL BE ABOVE NORMAL FOR THIS TIME OF YEAR. 78 .LONG TERM... TUESDAY THROUGH SATURDAY...EXTENDED FORECAST MODELS REMAIN IN GOOD AGREEMENT TODAY REGARDING THE LONG WAVE PATTERN IN THE EXTENDED. THE UPPER LEVEL RIDGE WILL SHIFT TO THE EAST ALLOWING SEVERAL PACIFIC WEATHER SYSTEMS TO MOVE INTO THE REGION. TIMING WILL BE DIFFICULT FOR EACH ONE AS A 120-150 KNOT JET SENDS THESE SYSTEMS QUICKLY ACROSS THE PACIFIC AND INTO THE AREA. THE FIRST SYSTEM WILL MOVE THROUGH TUESDAY FOR A CHANCE OF MAINLY MOUNTAIN SHOWERS...THEN A STRONGER UPPER LEVEL TROUGH EXPECTED WED NIGHT/THU. THIS PATTERN PERSISTS FRI/SAT...SO WILL CONTINUE WITH UNSETTLED FORECAST. WARM SUMMERLIKE TEMPERATURES WILL BE REPLACED BY SEASONAL AUTUMN TEMPERATURES THROUGH THE PERIOD. WOLF && .PRELIMINARY POINT TEMPS/POPS... PENDLETON (AIRPORT) 52 79 48 77 / 20 10 05 0 WALLA WALLA 54 78 51 76 / 20 10 05 0 TRI-CITIES 48 82 45 80 / 10 10 05 0 YAKIMA 46 80 43 78 / 10 10 05 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && 78
ORZ041>050-WAZ024>030-051200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 510 AM PDT SAT OCT 4 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. A WEAK DISTURBANCE WILL MOVE ACROSS OREGON THIS AFTERNOON...BRINGING ISOLATED SHOWERS AND AFTERNOON THUNDERSTORMS TO CENTRAL OREGON. ISOLATED SHOWERS AND EVENING THUNDERSTORMS WILL SPREAD NORTH ACROSS EASTERN OREGON AND SOUTHERN WASHINGTON TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. ADDITIONAL UPPER LEVEL DISTURBANCES WILL BRING A FEW SHOWERS OVER THE MOUNTAINS SUNDAY AND SUNDAY NIGHT. A TRANSITION TO COOLER AND MORE SHOWERY CONDITIONS WILL BEGIN TUESDAY AND CONTINUE THROUGH FRIDAY AS THE UPPER FLOW PATTERN BECOMES WESTERLY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. SMITH
The national radar mosaic for the moment the first event began.
1 tornado. Local standard time, as filed.
A small weak tornado, estimated strength F0, lasted three minutes with no damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2003Every state in 2003This day in weather historyThe tornado archive for Oregon, 2003Warnings in Oregon, October 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: 5371468.