Alert archive / Oregon / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Pendleton, OR

August 4, 2003Wasco County, Oregon

NWS Pendleton, OR issued this flash flood warning at Aug 4, 2003, 4:08 PM PDT for Wasco 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
Aug 4, 2003, 4:08 PM PDT (23:08 UTC)
Expired
Aug 4, 2003, 6:15 PM PDT
In force
2 hr
Issued by
NWS Pendleton, OR
Area
Counties, with a storm outline in the text

County Wasco County, OR

The radar

The Portland,OR radar (KRTX), 129 km from the middle of the area, began a volume at 23:09 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.

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 12:00Z, 11.1 hours before the alert went out and 110 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.

Skew-T log-pSkew-T log-p diagram, Salem/Mcnary, OR at 12:00Z on 2003-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salem/Mcnary, OR at 12:00Z on 2003-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KPDT 042311
FFWPDT
ORC065-050115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
408 PM PDT MON AUG 4 2003

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL WASCO COUNTY IN NORTH CENTRAL OREGON

* UNTIL 615 PM PDT

* AT 408 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL OVER SOUTHWESTERN WASCO
  COUNTY...OR ABOUT 29 MILES SOUTHWEST OF MAUPIN...MOVING            
  ONLY SLOWLY NORTH NORTHEAST.
  
* SOME LOCATIONS THREATENED THROUGH 615 PM PDT...
  RURAL WESTERN WASCO COUNTY
  
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. SOME CREEKS THAT MAY BE 
AFFECTED INCLUDE CEDAR CREEK AND BADGER CREEK. THE HEAVY RAINS COULD 
ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

LAT...LON 4496 12176 4484 12157 4521 12135 4524 12165

$$

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 4, 3:23 PM PDTSevere Thunderstorm WarningPDTJefferson52 min
Aug 4, 3:38 PM PDTSevere Thunderstorm WarningPDTWheeler67 min
Aug 4, 4:25 PM PDTSevere Thunderstorm WarningPDTWasco65 min

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.