Alert archive / Arkansas / Flash Flood Warnings in 2001

Flash Flood Warning 31, NWS Tulsa, OK

August 10, 2001Washington County, Arkansas

NWS Tulsa, OK issued this flash flood warning at Aug 10, 2001, 3:41 PM CDT for Washington County, Arkansas. 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Aug 10, 2001, 3:41 PM CDT (20:41 UTC)
Expired: Aug 10, 2001, 5:45 PM CDT
In force: 2 hr
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Washington County, AR

The radar

The Western Arkansas radar (KSRX), 64 km from the middle of the area, began a volume at 20:41 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

Springfield, MO (KSGF), launched 12:00Z, 8.7 hours before the alert went out and 123 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: 904 J/kg
Mixed-layer CIN: -202 J/kg
Mixed-layer LCL: 1255 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: -86 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 102043
FFWTUL
ARC143-102245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
341 PM CDT FRI AUG 10 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR
  SOUTHERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 545 PM CDT

* AT 341 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN   
  OVER MUCH OF SOUTHERN WASHINGTON COUNTY FROM STRICKLER TO          
  WINSLOW...MOVING SLOWLY EAST.

  RADAR INDICATES THAT 1 TO 2 INCHES OF RAIN HAS ALREADY FALLEN OVER 
  THE WARNED AREA. ANOTHER 2 TO 3 INCHES WILL BE POSSIBLE THROUGH    
  545 PM CDT.

* SOME LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY THE HEAVY RAIN
  INCLUDE BRENTWOOD...STRICKLER...BLACKBURN...WEST FORK AND WINSLOW.

EXCESSIVE RUNOFF WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND
STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES...AS WELL AS FARMLAND
ALONG THE BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER MAY BE TOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND.

LAT...LON 3589 9450 3577 9447 3578 9398 3600 9397

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 3:11 PM CDT	Severe Thunderstorm Warning	TSA	Washington	49 min
Aug 10, 4:10 PM CDT	Severe Thunderstorm Warning	TSA	Washington	50 min
Aug 10, 5:56 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	49 min
Aug 10, 6:01 PM CDT	Severe Thunderstorm Warning	TSA	Carroll	44 min
Aug 10, 6:30 PM CDT	Flash Flood Warning	TSA	Franklin	2 hr

Nearby

Flash Flood Warnings in Arkansas, 2001 Every flash flood warning in 2001

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.