Alert archive / Oregon / Flash Flood Warnings in 2003
Flash Flood Warning 1, NWS Pendleton, OR
NWS Pendleton, OR issued this flash flood warning at May 24, 2003, 6:00 PM PDT for Grant County, Oregon. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 24, 2003, 6:00 PM PDT (01:00 UTC)
- Expired
- May 24, 2003, 8:00 PM PDT
- In force
- 2 hr
- Issued by
- NWS Pendleton, OR
- Area
- Counties, with a storm outline in the text
County Grant County, OR
The radar
The Pendleton radar (KPDT), 141 km from the middle of the area, began a volume at 01:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 00:00Z, 1.0 hours before the alert went out and 276 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4 J/kg
- Mixed-layer CIN
- -269 J/kg
- Mixed-layer LCL
- 3231 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPDT 250103 FFWPDT ORC023-250300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PENDLETON OR 600 PM PDT SAT MAY 24 2003 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL GRANT COUNTY IN EAST CENTRAL OREGON * UNTIL 800 PM PDT * AT 600 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING VERY HEAVY RAINFALL IN THE MOUNT VERNON AREA. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY NEAR THE JUNCTION OF HIGHWAY 26 AND HIGHWAY 395 NEAR MOUNT VERNON. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. LAT...LON 4440 11963 4436 11908 4462 11908 4464 11961 $$
What forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at May 24, 2:45 PM PDT, 3 hours 15 minutes earlier.
Area forecast discussion, May 24, 2:45 PM PDT, 3 hours 15 minutes before
NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 245 PM PDT SAT MAY 24 2003 A FAIRLY DEEP TROUGH IS OFF THE WEST COAST AND BECOMING NEGATIVELY TILTED WITH TIME. THE MAIN LOW IS EXPECTED TO MOVE INTO BRITISH COLUMBIA...HOWEVER A SERIES OF WEAK SHORT WAVES WILL AFFECT THE WEATHER ACROSS THE CWFA THE NEXT 36 HOURS. THE ASSOCIATED COLD FRONT WILL WEAKEN AND MOVE ACROSS THE REGION OVERNIGHT AND BE EAST OF THE CWFA BY SUNDAY MORNING. HOWEVER THIS WILL BE THE FOCUSING POINT FOR CONVECTION THE REMAINDER OF THE AFTERNOON AND OVERNIGHT. HIGH INSTABILITY PARAMETERS IN CONJUNCTION WITH MID 50S PLUS DEWPOINTS AND A SURFACE BOUNDARY WILL RESULT IN AREAS OF DEEP CONVECTION. CURRENTLY SPC HAS A LARGE PORTION OF EASTERN OREGON/WASHINGTON IN A SEVERE THUNDERSTORM WATCH THROUGH 1900 LOCAL TIME TONIGHT. THE ATMOSPHERE WILL BEGIN TO STABILIZE BEHIND THE COLD FRONT...BUT SHOWERS AND THUNDERSTORMS ARE EXPECT TO LINGER THROUGH EARLY SUNDAY ACROSS THE SOUTHEAST PORTIONS OF THE ZONE. EXPECT A 8-12 DEGREE COOL DOWN ON SUNDAY FOLLOWED BY A COUPLE DEGREE WARMING ON MONDAY. BREEZY WINDS CAN ALSO BE EXPECTED IN THE USUAL LOCATIONS WITH AND BEHIND THE FRONTAL PASSAGE. TOBIN DAYS 3-7...A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE WESTERN U.S...CENTERED OVER THE GREAT PLAINS REGION ON TUESDAY. THE RIDGE WILL SLOWLY SHIFT EAST THROUGH THE PERIOD AS AN UPPER LEVEL TROUGH REMAINS OFF COAST. A SERIES OF DISTURBANCES WILL BE KICKED OUT OF THE TROUGH...MOST WILL TRACK WELL TO OUR NORTH THROUGH ONE MAY BRUSH ACROSS OUR WASHINGTON CASCADES ON WEDNESDAY. THIS WEATHER PATTERN WILL PROVIDE GENERALLY DRY AND WARM CONDITIONS THROUGH THE EXTENDED PERIOD. MJB. PDT 3200 ALW 3200 PSC 2100 YKM 2100 .KPDT...NONE.
Hazardous weather outlook, May 24, 5:00 AM PDT, 13 hours before
ORZ041>050-WAZ024>030-251300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 500 AM PDT SAT MAY 24 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON. .DAY ONE... SATURDAY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND THIS EVENING OVER THE MOUNTAINS OF NORTHEAST OREGON. THE SHOWERS AND THUNDERSTORMS WILL MOVE NORTHEAST INTO SOUTHEAST WASHINGTON THIS EVENING. A COLD FRONT WILL SWEEP ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. A VERY MOIST AND UNSTABLE AIR MASS HAS MOVED INTO THE REGION AHEAD OF THE FRONT AND THIS WILL SET THE STAGE FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS...WHICH WILL HAVE THE POTENTIAL FOR PRODUCING LARGE HAIL AND DAMAGING WINDS THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE LIKELY THIS AFTERNOON AND THIS EVENING TO DEAL WITH POSSIBLE SEVERE WEATHER ASSOCIATED WITH THUNDERSTORMS. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Local storm report, May 24, 5:34 PM PDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
534 PM PDT SAT MAY 24 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0235 PM DALE OR 1 INCH HAIL
05/24/03 GRANT REPORTED ON HWY 395 BY
PUBLIC.
0355 PM 5 E BEND OR 1 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0355 PM 2 SE PRINEVILLE OR .5 INCH HAIL
05/24/03 CROOK REPORTED BY STORM
SPOTTER.
0355 PM 5 ENE BEND OR .5 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0407 PM 10 E PILOT ROCK OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0410 PM ADAMS OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0412 PM ATHENA OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.Local storm report, May 24, 5:34 PM PDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OREGON
534 PM PDT SAT MAY 24 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0235 PM 2 NW DALE OR 1 INCH HAIL
05/24/03 UMATILLA REPORTED ON HWY 395 BY
PUBLIC.
0355 PM 5 E BEND OR 1 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0355 PM 2 SE PRINEVILLE OR .5 INCH HAIL
05/24/03 CROOK REPORTED BY STORM
SPOTTER.
0355 PM 5 ENE BEND OR .5 INCH HAIL
05/24/03 DESCHUTES REPORTED BY STORM
SPOTTER.
0407 PM 10 E PILOT ROCK OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0410 PM ADAMS OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.
0412 PM ATHENA OR .5 INCH HAIL
05/24/03 UMATILLA REPORTED BY STORM
SPOTTER.Nearby
Flash Flood Warnings in Oregon, 2003Every flash flood warning in 2003
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.