1 flash flood, 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 Jul 19, 1:30 PM PST, 1 hour 45 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 230 PM PDT FRI JUL 19 2002 FIRE WEATHER...SOMEWHAT COOLER AND DRIER AIR IS MOVING EAST OF THE CASCADES AND ACROSS THE EASTERN SECTIONS OF WASHINGTON AND OREGON. THE DRIER AIR IS ASSOCIATED WITH WESTERLY FLOW ALOFT BRINGING A STABLE AIR MASS INTO THE REGION. THUS SHOWERS WILL BE WINDING DOWN THIS AFTERNOON WITH A FEW ISOLATED EVENING SHOWERS IN THE BLUE MOUNTAINS. HOWEVER...WALLOWA COUNTY WILL BE ON THE FRINGES OF MOISTURE WRAPPING AROUND AN UPPER LOW PRESSURE SYSTEM CURRENTLY IN SOUTHEAST OREGON.THUS CANNOT RULE OUT SCATTERED SHOWERS AND THUNDERSTORMS IN WALLOWA COUNTY THIS EVENING. ANY THUNDERSTORMS THIS AFTERNOON OR THIS EVENING IN WALLOWA COUNTY ARE LIKELY TO BE WET. OTHERWISE...SKIES WILL CLEAR OVER EASTERN OREGON TONIGHT AS THE AFOREMENTIONED LOW MOVES INTO IDAHO. SHORT TERM...THE LOW PRESSURE SYSTEM OVER SOUTHEAST OREGON WILL EXIT EASTERN OREGON THIS EVENING. THE MAIN THREAT OF CONVECTION FOR THE REMAINDER OF THIS AFTERNOON AND EARLY THIS EVENING WILL BE OVER THE MOUNTAINS IN THE EXTREME EASTERN OREGON. WASHINGTON AND NORTHERN OREGON WILL INCREASINGLY COME UNDER THE INFLUENCE OF WESTERLY FLOW ALOFT AS ANOTHER UPPER LEVEL SHORT WAVE MOVES EASTWARD ACROSS BRITISH COLUMBIA TONIGHT. THE SHORT WAVE WILL ALLOW MARINE AIR TO SPILL EAST OF THE CASCADE CRESTS INTO EASTERN OREGON AND SOUTHEAST WASHINGTON FOR SLIGHTLY COOLER TEMPERATURES CONTINUING THROUGH THE WEEKEND. DRIER AND MORE STABLE AIR WILL COVER THE PACIFIC NORTHWEST OVER THE WEEKEND FOR DRY CONDITIONS. POLAN DAYS 3-7...THE RUN-TO-RUN CONTINUITY OF THE AVN/MRF HAS BEEN VERY POOR. OTHER EXTENDED MODELS ARE NOT MUCH BETTER. 12Z AVN DEVELOPS A STRONG UPPER LOW OVER THE NORTHERN CALIFORNIA COAST ON MONDAY THEN MOVES IT NORTHWARD ALONG THE OREGON COAST TUESDAY AND EARLY WEDNESDAY. THIS DIFFERS SIGNIFICANTLY FROM THE PREVIOUS RUN WHICH ONLY HINTED AT A WEAK UPPER LOW ON MONDAY. DESPITE THE DIFFERENCES...BELIEVE THE AVN MAY HAVE A CORRECT SOLUTION. WATER VAPOR LOOPS INDICATE A WAVE DEVELOPING NEAR 30N/133W. THE INITIAL DEVELOPMENT IS ALREADY FAIRLY STRONG AND SEE NO REASON WHY IT WILL WEAKEN. BY FOLLOWING THE 12Z AVN...WILL MENTION A CHANCE OF THUNDERSTORMS OVER CENTRAL OREGON AND THE OCHOCOS MONDAY THEN OVER THE REMAINDER OF THE OREGON MOUNTAINS TUESDAY AND WEDNESDAY. WILL KEEP THURSDAY AND FRIDAY DRY BUT WITH SOME UNCERTAINTY. SMITH PDT 0000 ALW 0000 PSC 0000 YKM 0000 KPDT...VCP21..OPERATIONAL. .KPDT...NONE.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Nearly stationary thunderstorm with heavy rainfall caused 1-2 feet of water to flow over road to Halfway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2002Every state in 2002This day in weather historyWarnings in Oregon, July 2002
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: 5307484.