1 heavy rain, 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, 6:53 PM PST, 6 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OREGON 753 PM PDT SUN MAY 23 2004 .SHORT TERM...FORECAST IN GOOD SHAPE. WILL ISSUE AN UPDATE TO CLEAN UP THE EVENING WORDING. WILL ALSO MONITOR THE RADAR TRENDS A LITTLE LONGER TO FINE TUNE THE POPS FOR THE REMAINDER OF THE NIGHT. WILD EVENING LOCALLY WITH A TORNADO VISIBLE FROM THE OFFICE AND ANOTHER WELL DEFINED WALL CLOUD ALMOST OVERHEAD. THUNDERSTORM ACTIVITY HAS DIMINISHED CONSIDERABLY IN THE PAST HOUR WITH LOSS OF DIABATIC HEATING AND DONT EXPECT A RESURGENCE OVERNIGHT WITH UPPER LOW PULLING OFF TO THE EAST. 78 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && 78
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 national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
A portion of Morgan Lake Road washed out as excess run-off caused the shoulder to drop away, bending the guard rail out from the road. The property damage from this event is estimated at $5,000.
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: 5404093.