1 funnel cloud, 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 May 23, 1:35 PM PST, 2 hours 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OREGON 235 PM PDT SUN MAY 23 2004 .SHORT TERM...AN UPPER-LEVEL LOW PRESSURE SYSTEM IS TRACKING SLOWLY EASTWARD ACROSS CENTRAL IDAHO AND WESTERN MONTANA. RESIDUAL WRAP-AROUND SHOWERS ARE BEING GENERATED ALONG THE WESTERN SIDE OF THE LOW ACROSS THE AREA. WITH A NEAR SATURATED ATMOSPHERE IN PLACE THE SHOWERS BEING CREATED ARE PRODUCING HEAVY RAIN WHICH HAS BEEN FALLING ON TOP OF NEARLY SATURATED SOILS ALONG THE BLUE MOUNTAINS AND BLUE MOUNTAIN FOOTHILLS. REPORTS OF CREEK AND SMALL RIVER FLOODING HAVE BEEN COMING IN THIS AFTERNOON ALONG THE FOOTHILLS OF THE BLUE MOUNTAINS FROM HEPPNER EASTWARD TO PENDLETON. SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE THROUGH THIS EVENING. THE UPPER-LEVEL LOW WILL SLIDE INTO CENTRAL MONTANA BY MONDAY AFTERNOON...HOWEVER LINGERING MOISTURE ALONG WITH COOL AIR ALOFT WILL HELP TO GENERATE SHOWERS ESPECIALLY OVER THE HIGHER TERRAIN. AREAS PRONE TO SHOWERS IN NORTHERLY FLOW WILL SEE THE MOST IMPACT INCLUDING THE BLUE/WALLOWA MOUNTAINS AND THE EASTERN SLOPES OF THE SOUTHERN WASHINGTON CASCADES. BY EARLY TUESDAY A SHORT-LIVED RIDGE OF HIGH PRESSURE WILL MOVE OVER THE AREA. THIS WILL BRING PARTLY CLOUDY SKIES AND DRIER CONDITIONS TO THE REGION. CANTIN .LONG TERM...FLOW LOOKS TO BECOME MORE ZONAL BY THE MIDDLE OF NEXT WEEK. A STRONG WAVE IS EXPECTED TO MOVE INTO THE PACNW WEDNESDAY NIGHT...THEN MOVE SLOWLY ACROSS THE REGION THURSDAY AND FRIDAY. FLAT RIDGING SHOULD BE IN PLACE AGAIN BY NEXT WEEKEND. THUS MOST OF EASTERN WASHINGTON AND OREGON SHOULD BE DRY...EXCEPT FOR A FEW SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES AS WELL AS THE BLUE AND WALLOWA MOUNTAINS. GKH && .PRELIMINARY POINT TEMPS/POPS... PENDLETON (AIRPORT) 43 68 44 73 / 30 20 20 05 WALLA WALLA 45 69 46 73 / 30 20 10 05 TRI-CITIES 44 73 44 79 / 20 20 10 05 YAKIMA 44 73 44 75 / 20 20 10 05 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && 96
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PENDLETON OR 1145 AM PDT SUN MAY 23 2004 UPDATED TO MENTION URBAN/SMALL STREAM FLOOD WARNING IN DAY ONE ORZ041>050-WAZ024>030-241200- BLUE MOUNTAINS OF OREGON OR-CENTRAL OREGON OR- EAST COLUMBIA RIVER GORGE OR-EAST COLUMBIA RIVER GORGE WA- EAST SLOPES SOUTHERN CASCADES WA-FOOTHILLS OF THE BLUE MOUNTAINS WA- FOOTHILLS OF THE BLUE MOUNTAINS OR-GRANDE RONDE VALLEY OR- JOHN DAY VALLEY OR-KITTITAS VALLEY WA-LOWER COLUMBIA BASIN WA- LOWER COLUMBIA BASIN OR-NORTH CENTRAL OREGON OR- NORTHWEST BLUE MOUNTAINS WA-OCHOCO-JOHN DAY HIGHLANDS OR- WALLOWA COUNTY OR-YAKIMA VALLEY WA- 1145 AM PDT SUN MAY 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT SCATTERED RAIN SHOWERS WILL CONTINUE TO MOVE THROUGH THE AREA. THESE SHOWERS WILL ADD TO THE FLOOD POTENTIAL OF MANY CREEKS DESCENDING FROM THE BLUE MOUNTAINS ALREADY SWOLLEN WITH RUN-OFF FROM THE RAINFALL OF PREVIOUS DAYS. AN URBAN/SMALL STREAM FLOOD WARNING HAS BEEN ISSUED THROUGH 5 PM FOR MORROW AND UMATILLA COUNTIES IN OREGON. SEE THE LATEST PDXFLWPDT OR FGUS86 FOR THE DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. PRECIPITATION CHANCES WILL CONTINUE TO DECREASE EARLY IN THE WEEK...AS LOW PRESSURE DEPARTS...AND A RIDGE OF HIGH PRESSURE BUILDS IN BY TUESDAY. UNSETTLED WEATHER WILL RETURN LATE IN THE WEEK AS LOW PRESSURE APPROACHES THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Pendleton radar (KPDT), 14 km away, was scanning. The volume nearest the first event began at 00:04 UTC.
1 funnel cloud. Local standard time, as filed.
A funnel cloud was spotted near the Interstate 84 and Highway 207 interchange.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2004Every state in 2004This day in weather historyWarnings in Oregon, May 2004
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: 5404092.