Alert archive / Texas / Flash Flood Warnings in 2001

Flash Flood Warning 3, NWS San Angelo, TX

April 22, 2001Brown County, Texas

NWS San Angelo, TX issued this flash flood warning at Apr 22, 2001, 11:47 PM CDT for Brown County, Texas. It was in force for 3 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: Apr 22, 2001, 11:47 PM CDT (04:47 UTC)
Expired: Apr 23, 2001, 2:45 AM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Brown County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.8 hours before the alert went out and 197 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: 1030 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1262 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 9.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 230449
FFWSJT
TXC049-230745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1147 PM CDT SUN APR 22 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BROWN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 245 AM CDT

* AT 1145 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED 
  THUNDERSTORMS WITH VERY HEAVY RAIN REPEATEDLY TRACKING OVER
  THE SOUTHERN TWO-THIRDS OF BROWN COUNTY. NATIONAL WEATHER 
  SERVICE DOPPLER RADAR ESTIMATED THAT RAINFALL AMOUNTS OF 1.5 
  TO 2 INCHES HAVE ALREADY FALLEN OVER THE WESTERN HALF OF BROWN
  COUNTY. THE STORMS WILL CONTINUE THROUGH AT LEAST 1 AM...AND 
  ANOTHER 1 TO 1.5 INCHES IS EXPECTED.  

* THE BROWNWOOD POLICE DEPARTMENT AND BROWN COUNTY SHERIFF OFFICE 
  REPORTED NUMEROUS STREETS AND ONE UNDERPASS FLOODED IN THE CITY OF 
  BROWNWOOD. THE ADDITIONAL HEAVY RAIN WILL WORSEN THE FLOODING. 

DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER DEPTH
MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. DO NOT ATTEMPT TO
DRIVE AROUND BARRICADES. MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

TRAVEL IS DISCOURAGED OVERNIGHT..3.ESPECIALLY IN BROWNWOOD...UNLESS IT
IS AN EMERGENCY. 

LAT...LON 3177 9914 3165 9899 3178 9876 3204 9894

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 22, 10:12 PM CDT, 1 hour 35 minutes earlier.

Area forecast discussion, Apr 22, 10:12 PM CDT, 1 hour 35 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
1012 PM CDT SUN APR 22 2001

WILL SEND A ZONE UPDATE TO INCREASE POPS ACROSS PARTS OF SOUTHERN HALF
OF CWFA...BASED ON RADAR TRENDS.

19

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 9:59 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher	46 min
Apr 22, 10:03 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	57 min
Apr 22, 10:45 PM CDT	Severe Thunderstorm Warning	SJT	Menard	60 min
Apr 22, 11:53 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	67 min
Apr 22, 11:56 PM CDT	Severe Thunderstorm Warning	SJT	Kimble	64 min
Apr 23, 12:10 AM CDT	Severe Thunderstorm Warning	SJT	Menard	50 min
Apr 23, 12:46 AM CDT	Severe Thunderstorm Warning	SJT	McCulloch	44 min
Apr 23, 12:55 AM CDT	Severe Thunderstorm Warning	SJT	Mason	50 min
Apr 23, 1:17 AM CDT	Severe Thunderstorm Warning	SJT	Kimble	43 min

Nearby

Flash Flood Warnings in Texas, 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.