1 lightning, 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 Apr 16, 3:20 PM PST, 4 hours 38 minutes earlier.
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 420 PM PDT WED APR 16 2003 ...CORRECTED TYPO... ISOLATED AND SCATTERED SHOWERS ARE DEVELOPING THIS AFTERNOON ACROSS THE AREA. THESE SHOWERS WILL TAPER OFF AFTER THE SUN GOES DOWN...AND DAYTIME HEATING STOPS. A COLD FRONT IS DROPPING THE SOUTH DURING THE OVERNIGHT HOURS INTO THE PACIFIC NORTHWEST...BRINGING ANOTHER ROUND OF SHOWERS TO THE AREA. THE COLD FRONT WILL CROSS OVER THE CASCADES THE DURING THE EARLY MORNING HOURS AND MOVE THROUGH OUR COUNTY WARNING AREA BY MID AFTERNOON. ISOLATED THUNDERSTORMS WILL BE POSSIBLE IN THE NORTHEAST PORTION OF THE STATE...AS INSTABILITIES INDICES COME INTO LINE ALONG WITH THE POTENTIAL VORTICITY ADVECTION AND THE DIVERGENCE OF Q. WINDS WILL ALSO BE BECOMING BREEZY TO WINDY AS THE COLD FRONT MOVES THROUGH THE AREA WITH THE STRONGEST WINDS OCCURRING WITH THE TIGHTEST PRESSURE GRADIENTS DURING THE LATE AFTERNOON AND EVENING HOURS. THESE WINDS WILL ALSO CAUSE RAIN SHADOWING ACROSS MOST THE EAST SLOPES OF THE CASCADES AND THE COLUMBIA RIVER BASIN. THE WINDS WILL GRADUALLY TAPER OFF DURING THE OVERNIGHT HOURS AND WE WILL ALSO BE DRYING OUT DURING THE OVERNIGHT HOURS AS THE TROUGH AXIS MOVES THROUGH THE REGION. A RIDGE BEGINS TO BUILD INTO THE PACIFIC NORTHWEST ON FRIDAY...WITH A WARM FRONT MOVING UP THE COAST. WE WILL REMAIN UNDER THE DRY SECTOR OF THE RIDGE...WITH SLIGHTLY WARMER IN TEMPERATURES AND SOME HIGH CLOUD COVER. PALMER DAYS 3-7...CLOUDS WILL INCREASE AND THERE WILL BE A SLIGHT CHANCE OF PRECIP MOVING INTO SOUTHERN WASHINGTON CASCADES ON SATURDAY AS A HIGH PRESSURE RIDGE SHIFT EAST AHEAD OF THE NEXT WEATHER SYSTEM. A COLD FRONT WILL SWEEP THROUGH SATURDAY NIGHT AND SUNDAY...SPREADING PRECIP ACROSS THE AREA. SHOWERS WILL LINGER OVER THE REGION INTO MONDAY AS THE TROUGH AXIS AND A COUPLE OF WEAK IMPULSES MOVE THROUGH THE PACIFIC NORTHWEST. A QUICK TRANSITORY RIDGE WILL SLIDE ACROSS THE AREA ON TUESDAY...LIMITING PRECIP CHANCES. THE NEXT SYSTEM WILL BE APPROACHING THE AREA ON WEDNESDAY...TIMING IS QUESTIONABLE BUT WILL INTRODUCE A SLIGHT CHANCE OF PRECIP MAINLY ALONG WESTERN ZONES. MJB. PDT 2300 ALW 2300 PSC 2200 YKM 2200 .KPDT...NONE.
ORZ041>050-WAZ024>030-171300- HAZARDOUS WEATHER OUTLOOK...UPDATED FOR THURSDAY WEATHER... NATIONAL WEATHER SERVICE PENDLETON OR 500 AM PDT WED APR 16 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. A COUPLE OF WEAK DISTURBANCES...ROTATING AROUND A LARGER SYSTEM OFF SHORE...WILL MOVE THROUGH THE EASTERN HALF OF OREGON AND WASHINGTON TODAY. THIS WILL ALLOW FOR ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS CENTRAL AND NORTHEASTERN OREGON. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. AN UPPER LEVEL DISTURBANCE WILL PUSH A COLD FRONT THROUGH SOUTHEAST WASHINGTON AND CENTRAL AND NORTHEAST OREGON ON THURSDAY FOR SCATTERED SHOWERS. EXPECT WINDY CONDITIONS TO DEVELOP THURSDAY AFTERNOON AND NIGHT AS UPPER LEVEL WINDS MIX DOWN TO THE SURFACE AND ADD TO THE GRADIENT WINDS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The Pendleton radar (KPDT), 67 km away, was scanning. The volume nearest the first event began at 03:58 UTC.
1 lightning. Local standard time, as filed.
Lightning associated with a thunderstorm ignited a barn fire.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2003Every state in 2003This day in weather historyWarnings in Washington, April 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: 5353732.