Alert archive / Oklahoma / Flash Flood Warnings in 2007

Flash Flood Warning 98, NWS Tulsa, OK

September 9, 2007LeFlore County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Sep 9, 2007, 4:24 AM CDT for LeFlore County, Oklahoma. 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: Sep 9, 2007, 4:24 AM CDT (09:24 UTC)
Expired: Sep 9, 2007, 7:15 AM CDT
In force: 3 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 09:26 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

Time	Report	Where	Remark
Sep 9, 7:00 AM CDT	FLASH FLOOD	9 Sw Heavener, OK	SECONDARY ROADS FLOODED THROUGHOUT 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 00:00Z, 9.4 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-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: 357 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 090924
FFWTSA
OKC079-091215-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

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

* UNTIL 715 AM CDT

* AT 421 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH HEAVY RAIN...MOVING EAST AT 15 MPH ACROSS       
  SOUTHERN LE FLORE COUNTY. RADAR INDICATES THAT 3 TO 4 INCHES OF    
  RAIN HAS ALREADY FALLEN. ANOTHER 1 TO 2 INCHES WILL BE POSSIBLE    
  THROUGH 715 AM CDT.

* THE STORM PRODUCING THE HEAVY RAINFALL WILL AFFECT MUSE...         
  WHITESBORO...OCTAVIA...AND BIG CEDAR.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLASH FLOODS. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW
MUCH WATER IS ON THE ROADS. IT ONLY TAKES TWO FEET OF RUSHING WATER
TO CARRY AWAY MOST SPORT UTILITY VEHICLES AND PICKUPS. MOTORISTS
SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. TAKE A DIFFERENT 
ROUTE TO REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. 
TURN AROUND...DONT DROWN.

LAT...LON 3481 9493 3452 9493 3452 9447 3481 9445

$$

1 follow-up statement

000 
WGUS74 KTSA 091030
FFSTSA

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

OKC079-091215-
LE FLORE OK-
530 AM CDT SUN SEP 9 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR LE
FLORE COUNTY...

AT 525 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH HEAVY RAIN AFFECTING MUCH OF EASTERN AND SOUTHERN 
LE FLORE COUNTY...MOVING SOUTHEAST AT 15 MPH. RADAR INDICATES THAT 3 
TO 5 INCHES OF RAIN HAVE FALLEN OVER PORTIONS OF THE WARNED AREA 
WITH ANOTHER 1 TO 3 INCHES POSSIBLE THROUGH 715 AM CDT.

SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
INCLUDE POCOLA...BOKOSHE...PANAMA...CAMERON...WISTER...HOWE...
FANSHAWE...HEAVENER...WHITESBORO...MUSE AND POTEAU.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR IS
OCCURRING. RESIDENTS LIVING ALONG STREAMS...CREEKS AND DRAINAGE
DITCHES SHOULD BE READY TO TAKE IMMEDIATE ACTION IF FLOODING IS
OBSERVED. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATER BY FOOT OR BY
AUTO...YOU MAY BE SWEPT AWAY BY THE STRONG CURRENT. 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.

LAT...LON 3520 9492 3452 9493 3452 9447 3525 9444

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 7:26 PM CDT	Special Weather Statement	TSA	Latimer	64 min
Sep 9, 2:18 AM CDT	Flash Flood Warning	TSA	Muskogee	4 hr
Sep 9, 3:10 AM CDT	Dense Fog Advisory	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers and 1 more	7 hr
Sep 9, 7:07 AM CDT	Flash Flood Warning	TSA	LeFlore	4 hr
Sep 9, 7:24 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	66 min
Sep 9, 8:06 AM CDT	Flash Flood Warning	TSA	Pittsburg	4 hr
Sep 9, 9:06 AM CDT	Flash Flood Warning	TSA	Pushmataha	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2007 Every 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.