Alert archive / Oklahoma / Flash Flood Warnings in 2003

Flash Flood Warning 21, NWS Norman, OK

September 10, 2003Beckham County, Oklahoma

NWS Norman, OK issued this flash flood warning at Sep 10, 2003, 9:44 PM CDT for Beckham County, Oklahoma. It was in force for 3 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: Sep 10, 2003, 9:44 PM CDT (02:44 UTC)
Expired: Sep 11, 2003, 12:45 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Beckham County, OK

The radar

The Altus AFB radar (KFDR), 123 km from the middle of the area, began a volume at 02:44 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.7 hours before the alert went out and 179 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 959 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 2150 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KOUN 110247
FFWOKC
OKC009-110545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
944 PM CDT WED SEP 10 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BECKHAM COUNTY IN WESTERN OKLAHOMA

* UNTIL 1245 AM CDT

* AT 944 PM CDT...DOPPLER RADAR DETECTED THAT VERY HEAVY RAIN WAS   
FALLING OVER MUCH OF CENTRAL AND EASTERN BECKHAM COUNTY. OTHER 
THUNDERSTORMS PRODUCING HEAVY RAINFALL WILL MOVE OUT OF TEXAS AND 
ACROSS BECKHAM COUNTY AGAIN BEFORE MIDNIGHT. BASED ON RADAR 
ESTIMATES...SOME AREAS OF CENTRAL BECKHAM COUNTY HAVE LIKELY 
RECEIVED 3 INCHES OF RAINFALL. ANOTHER 2 TO 4 INCHES WILL PROBABLY 
FALL IN MUCH OF THE COUNTY THROUGH THE REST OF THE EVENING.

* LOCATIONS IN THE WARNING INCLUDE CARTER...ERICK AND SAYRE

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT DRIVE VEHICLES INTO
AREAS WHERE WATER COVERS THE ROADWAY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SUVS AND PICKUP TRUCKS. VEHICLES CAUGHT IN RISING WATER
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

LAT...LON 3536 9991 3507 9994 3513 9951 3546 9940

$$

WR

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 10, 8:07 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	43 min
Sep 10, 8:48 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	42 min
Sep 10, 11:28 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	32 min
Sep 11, 12:07 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	38 min
Sep 11, 12:15 AM CDT	Flash Flood Warning	OUN	Beckham, Greer, Harmon	3 hr
Sep 11, 12:19 AM CDT	Severe Thunderstorm Warning	OUN	Beckham	26 min
Sep 11, 12:48 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	42 min
Sep 11, 1:05 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	25 min
Sep 11, 3:15 AM CDT	Flash Flood Warning	OUN	Beckham, Greer, Harmon	2 hr
Sep 11, 4:15 AM CDT	Severe Thunderstorm Warning	OUN	McClain	45 min
Sep 11, 5:30 AM CDT	Flash Flood Warning	OUN	Beckham	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2003 Every 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.