Alert archive / Oklahoma / Flash Flood Warnings in 2004

Flash Flood Warning 39, NWS Norman, OK

August 27, 2004Garfield County, Oklahoma

NWS Norman, OK issued this flash flood warning at Aug 27, 2004, 7:22 PM CDT for Garfield County, Oklahoma. 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 27, 2004, 7:22 PM CDT (00:22 UTC)
Expired
Aug 27, 2004, 9:30 PM CDT
In force
2 hr
Issued by
NWS Norman, OK
Area
Counties, with a storm outline in the text

County Garfield County, OK

The radar

The Vance AFB radar (KVNX), 42 km from the middle of the area, began a volume at 00:24 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

Norman, OK (KOUN), launched 00:00Z, 0.4 hours before the alert went out and 139 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, Norman, OK at 00:00Z on 2004-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 697 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2004-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
697 J/kg
Mixed-layer CIN
-153 J/kg
Mixed-layer LCL
2128 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
94 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 
WGUS54 KOUN 280026
FFWOKC
OKC047-280230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
722 PM CDT FRI AUG 27 2004

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN GARFIELD COUNTY IN NORTHERN OKLAHOMA... INCLUDING ENID.

* UNTIL 930 PM CDT

* AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL OVER MUCH OF WESTERN
  GARFIELD COUNTY... FROM ENID... TO LAHOMA AND DRUMMOND. THE STORMS
  RESPONSIBLE FOR THE HEAVY RAIN WERE MOVING EAST AT 10 TO 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE CARRIER...DRUMMOND...ENID...
  LAHOMA...VANCE AIR FORCE BASE AND WAUKOMIS

RADAR INDICATES THAT 2 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN ON 
AREAS BETWEEN LAHOMA AND DRUMMOND... AFFECTING THE DRAINAGE AREAS 
FOR TURKEY CREEK AND ELM CREEK. ADDITIONAL RAINFALL OF ANOTHER 1 TO 
3 INCHES IS LIKELY IN THESE SAME AREAS... AND FARTHER EAST INTO ENID 
THROUGH 8 PM... RESULTING IN FLASH FLOODING ALONG TURKEY AND ELM 
CREEKS... AND ALSO IN MANY AREAS WITHIN THE CITY OF ENID.

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 3647 9810 3623 9810 3624 9776 3652 9778

$$
 MILLER
1 follow-up statement
000 
WGUS74 KOUN 280126
FFSOKC
OKC047-280230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
823 PM CDT FRI AUG 27 2004

...FLASH FLOOD WARNING CONTINUES FOR WESTERN GARFIELD COUNTY UNTIL 
930 PM CDT...

AT 815 PM CDT... DOPPLER RADAR INDICATED STRONG TO SEVERE 
THUNDERSTORMS PRODUCING TORRENTIAL DOWNPOURS COVERING MUCH OF 
SOUTHWEST GARFIELD COUNTY.  HOWEVER... THE INTENSITY OF RAINFALL IN 
AREAS FROM LAHOMA TO ENID HAD DIMINISHED.

STORMS WERE SLOWLY MOVING SOUTH... WHICH WILL ALLOW RAINFALL RATES 
TO DECREASE OVER SOUTHWEST GARFIELD COUNTY THROUGH 9 PM. HOWEVER... 
RUNOFF FROM 2 TO 4 INCHES OF RAIN EARLIER THIS EVENING WILL CONTINUE 
TO PRODUCE LOCAL FLASH FLOODING ALONG TURKEY AND ELM CREEKS IN 
WESTERN AND SOUTHWEST GARFIELD COUNTY THROUGH AT LEAST 930 PM.

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 3645 9810 3619 9809 3619 9775 3645 9783

$$
 MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 7:01 PM CDTSevere Thunderstorm WarningOUNGarfield, Major44 min
Aug 27, 7:13 PM CDTSevere Thunderstorm WarningOUNBlaine32 min
Aug 27, 7:47 PM CDTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher, Major43 min
Aug 27, 11:36 PM CDTSevere Thunderstorm WarningOUNGreer39 min

Nearby

Flash Flood Warnings in Oklahoma, 2004Every flash flood warning in 2004

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.