Alert archive / Oklahoma / Flash Flood Warnings in 2007

Flash Flood Warning 5, NWS Tulsa, OK

April 24, 2007Choctaw County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 24, 2007, 6:40 PM CDT for Choctaw County, Oklahoma. It took effect at Apr 24, 2007, 6:45 PM CDT. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 24, 2007, 6:40 PM CDT (23:40 UTC)
In effect from
Apr 24, 2007, 6:45 PM CDT
Expired
Apr 24, 2007, 9:45 PM CDT
In force
3 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County Choctaw County, OK

The radar

The Western Arkansas radar (KSRX), 178 km from the middle of the area, began a volume at 23:42 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.

What was reported inside it

TimeReportWhereRemark
Apr 24, 9:30 PM CDTFLASH FLOODSoper, OKWIDESPREAD STREET FLOODING. WATER UP INTO ONE HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.7 hours before the alert went out and 209 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, Fort Worth, TX at 12:00Z on 2007-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 819 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, Fort Worth, TX at 12:00Z on 2007-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.19395878Sfc1 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
819 J/kg
Mixed-layer CIN
-306 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
177 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 KTSA 242345
FFWTSA
OKC023-250245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
640 PM CDT TUE APR 24 2007

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 945 PM CDT

* AT 638 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH HEAVY RAIN OVER NORTH TEXAS THAT WILL MOVE INTO 
AND ACROSS CHOCTAW COUNTY THIS EVENING.  TWO TO THREE INCHES OF RAIN 
HAS FALLEN OVER CHOCTAW COUNTY...SATURATING THE GROUND. AN ADDITIONAL 
TWO TO THREE INCHES WILL BE POSSIBLE THROUGH 10 PM THIS EVENING 
...RESULTING IN A SIGNIFICANT FLASH FLOOD THREAT FOR CHOCTAW 
COUNTY.  

* LOCATIONS THAT WILL BE AFFECTED BY HEAVY RAIN   INCLUDE...SOPER... 
GOODLAND...HUGO...KENT...SAWYER...MESSER AND FORT TOWSON.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

LAT...LON 3395 9594 3390 9580 3394 9557 3388 9536
      3396 9516 3414 9516 3417 9595

$$
2 follow-up statements
000 
WGUS74 KTSA 250040
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
740 PM CDT TUE APR 24 2007

OKC023-250245-
CHOCTAW OK-
740 PM CDT TUE APR 24 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
CHOCTAW COUNTY...

AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
BAND OF THUNDERSTORMS WITH HEAVY RAIN EXTENDING FROM HUGO SOUTHWEST 
TO NEAR SHERMAN TEXAS. THE STORMS WERE MOVING EAST-NORTHEAST AT 35 
MPH. LOCALLY HEAVY RAINFALL WILL OCCUR ACROSS MUCH OF CHOCTAW COUNTY 
AS THESE STORMS MOVE REPEATEDLY ACROSS THE SAME AREAS. 

TWO TO THREE INCHES OF RAIN HAVE FALLEN OVER PORTIONS OF THE COUNTY 
AND ANOTHER ONE TO TWO INCHES IS LIKELY THROUGH 945 PM THIS EVENING. 
THIS ADDITIONAL HEAVY RAINFALL WILL LIKELY RESULT IN FLOODING... 
ESPECIALLY LOW LYING AREAS.

SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
INCLUDE KENT...MESSER...SOPER...BOSWELL...FORT TOWSON...SAWYER AND
HUGO.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

LAT...LON 3395 9594 3390 9580 3394 9557 3388 9536
      3396 9516 3414 9516 3417 9595

$$
000 
WGUS74 KTSA 250246
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
945 PM CDT TUE APR 24 2007

OKC023-250255-
CHOCTAW OK-
945 PM CDT TUE APR 24 2007

...THE FLASH FLOOD WARNING FOR CHOCTAW COUNTY EXPIRES AT 945 PM
CDT...

THE SHOWER AND THUNDERSTORM ACTIVITY HAS WEAKENED AND WILL BEGIN TO 
SHIFT EAST OF CHOCTAW COUNTY BY 1000 PM...ENDING THE THREAT FOR 
HEAVY RAINFALL. THE FLASH FLOOD WARNING THEREFORE WILL BE ALLOWED TO 
EXPIRE. 

TO REPORT PREVIOUS FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
TULSA.

LAT...LON 3395 9594 3390 9580 3394 9557 3388 9536
      3396 9516 3414 9516 3417 9595

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 2:24 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee66 min
Apr 24, 2:54 PM CDTTornado WarningTSAOsage, Pawnee51 min
Apr 24, 3:01 PM CDTSevere Thunderstorm WarningTSACreek, Osage, Pawnee, Tulsa59 min
Apr 24, 3:36 PM CDTSevere Thunderstorm WarningTSAOsage, Washington54 min
Apr 24, 4:13 PM CDTTornado WarningTSARogers, Tulsa47 min
Apr 24, 4:14 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg61 min
Apr 24, 4:21 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Okfuskee, Okmulgee39 min
Apr 24, 4:47 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okmulgee42 min
Apr 24, 5:33 PM CDTSevere Thunderstorm WarningTSAChoctaw, Pushmataha57 min

Nearby

Flash Flood Warnings in Oklahoma, 2007Every flash flood warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.