Alert archive / Arkansas / Flash Flood Warnings in 2006

Flash Flood Warning 7, NWS Tulsa, OK

May 9, 2006Sebastian County, Arkansas

NWS Tulsa, OK issued this flash flood warning at May 9, 2006, 9:26 PM CDT for Sebastian County, Arkansas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 9, 2006, 9:26 PM CDT (02:26 UTC)
Expired: May 10, 2006, 12:30 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 6 km from the middle of the area, began a volume at 02:25 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
May 9, 10:30 PM CDT	FLASH FLOOD	Fort Smith, AR	HOUSES FLOODED...SEVERAL CARS UNDER WATER NEAR 28TH STREET IN FORT SMITH

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, 2.4 hours before the alert went out and 181 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: 680 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1161 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 100226
FFWTSA
ARC131-100530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
926 PM CDT TUE MAY 9 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 1230 AM CDT

* AT 921 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN 10 MILES WEST OF FORT SMITH...MOVING
  EAST AT 20 MPH. RADAR INDICATES THAT 2 TO 3 INCHES OF RAIN HAS
  ALREADY FALLEN. ANOTHER 1 TO 2 INCHES WILL BE POSSIBLE THROUGH
  1230 AM CDT.

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
  INCLUDE...BONANZA...HACKETT...EXCELSIOR...JENNY LIND...BARLING...
  GREENWOOD...BURNVILLE AND LAVACA.

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.

LAT...LON 3545 9442 3515 9446 3516 9412 3541 9416

$$

1 follow-up statement

000 
WGUS74 KTSA 100354
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1053 PM CDT TUE MAY 9 2006

ARC131-100530-
SEBASTIAN AR-
1053 PM CDT TUE MAY 9 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR
SEBASTIAN COUNTY...

AT 1052 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
LIGHT RAIN CONTINUING ACROSS EASTERN SEBASTIAN COUNTY.  NO 
SIGNIFICANT RAINS ARE IMMINENT FOR SEBASTIAN COUNTY...HOWEVER RUN 
OFF FROM PREVIOUS RAINS WILL CONTINUE TO CAUSE FLASH FLOODING 
CONCERNS.

SOME LOCATIONS THAT CONTINUE IN THE FLASH FLOOD WARNING INCLUDE 
BLOOMER...LAVACA...BARLING AND FORT SMITH.

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.

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.

LAT...LON 3545 9442 3515 9446 3516 9412 3541 9416

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:54 PM CDT	Tornado Warning	TSA	Sebastian	66 min
May 9, 8:53 PM CDT	Tornado Warning	TSA	Sebastian	57 min
May 9, 9:46 PM CDT	Flash Flood Warning	TSA	Franklin	119 min
May 9, 9:53 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	32 min
May 9, 11:09 PM CDT	Severe Thunderstorm Warning	TSA	Benton	66 min
May 10, 3:44 AM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	33 min

Nearby

Flash Flood Warnings in Arkansas, 2006 Every flash flood warning in 2006

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.