Alert archive / Oklahoma / Flash Flood Warnings in 2007

Flash Flood Warning 99, NWS Tulsa, OK

September 9, 2007LeFlore County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Sep 9, 2007, 7:07 AM CDT for LeFlore County, Oklahoma. It was in force for 4 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
Sep 9, 2007, 7:07 AM CDT (12:07 UTC)
Expired
Sep 9, 2007, 11:00 AM CDT
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 12:08 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
Sep 9, 8:30 AM CDTFLASH FLOODBig Cedar, OKBRIDGES WASHED OUT NEAR BIG CEDAR. SECONDARY ROADS CONTINUE TO BE FLOODED ACROSS SOUTHERN LEFLORE COUNTY.

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

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 0.1 hours before the alert went out and 237 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, Springfield, MO at 12:00Z on 2007-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 243 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, Springfield, MO at 12:00Z on 2007-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.193958Sfc1 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
243 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
532 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-34 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 091207
FFWTSA
OKC079-091600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
707 AM CDT SUN SEP 9 2007

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LE FLORE COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1100 AM CDT

* AT 705 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN ALONG A LINE EXTENDING FROM 2 MILES
  WEST OF WISTER TO 12 MILES WEST OF WHITESBORO...MOVING EAST AT     
  15 MPH. RADAR INDICATES THAT SIX TO EIGHT INCHES OF RAIN HAS       
  ALREADY FALLEN. ANOTHER TWO TO THREE INCHES WILL BE POSSIBLE       
  THROUGH 1100 AM CDT AS SHOWERS AND THUNDERSTORMS MOVE REPEATEDLY   
  OVER THE SAME LOCATIONS.

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
  INCLUDE...POTEAU...HOWE...HEAVENER...MUSE AND BIG CEDAR.

DURING HEAVY RAINS...STAY AWAY FROM DRAINAGE DITCHES...CREEKS AND
OTHER LOW LYING AREAS. THEY ARE PRONE TO RAPID RISES AND MAY FLOOD
QUICKLY. REMEMBER FLOODING IS THE LEADING CAUSE OF WEATHER RELATED 
DEATHS. DO NOT DRIVE WHERE WATER COVERS THE ROAD. TURN AROUND... 
DONT DROWN.

LAT...LON 3507 9445 3504 9492 3496 9493 3494 9500
      3486 9500 3486 9505 3470 9505 3470 9494
      3453 9494 3452 9447

$$
1 follow-up statement
000 
WGUS74 KTSA 091315
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
815 AM CDT SUN SEP 9 2007

OKC079-091600-
LE FLORE OK-
815 AM CDT SUN SEP 9 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR LE
FLORE COUNTY...

AT 812 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH MODERATE TO HEAVY RAIN CONTINUED TO AFFECT 
PORTIONS OF THE WARNED AREA SOUTH OF A FANSHAWE TO BIG CEDAR LINE. 
THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MPH. RADAR INDICATES 
THAT 6 TO 10 INCHES OF RAIN HAS ALREADY FALLEN. ANOTHER 1 TO 1.5 
INCHES WILL BE POSSIBLE THROUGH 1100 AM CDT.

SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
INCLUDE WISTER...HOWE...FANSHAWE...HEAVENER AND POTEAU.

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 3507 9445 3504 9492 3496 9493 3494 9500
      3486 9500 3486 9505 3470 9505 3470 9494
      3453 9494 3452 9447

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 7:26 PM CDTSpecial Weather StatementTSALatimer64 min
Sep 9, 2:18 AM CDTFlash Flood WarningTSAMuskogee4 hr
Sep 9, 3:10 AM CDTDense Fog AdvisoryTSACraig, Delaware, Mayes, Nowata, Ottawa, Rogers and 1 more7 hr
Sep 9, 4:24 AM CDTFlash Flood WarningTSALeFlore3 hr
Sep 9, 7:24 AM CDTSevere Thunderstorm WarningTSALeFlore66 min
Sep 9, 8:06 AM CDTFlash Flood WarningTSAPittsburg4 hr
Sep 9, 9:06 AM CDTFlash Flood WarningTSAPushmataha3 hr

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.