Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 10, NWS San Angelo, TX
NWS San Angelo, TX issued this flash flood warning at Aug 28, 2001, 8:40 AM CDT for Tom Green 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
- Aug 28, 2001, 8:40 AM CDT (13:40 UTC)
- Expired
- Aug 28, 2001, 11:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Tom Green County, TX
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 1.7 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 901 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KSJT 281341 FFWSJT TXC451-281645- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 840 AM CDT TUE AUG 28 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... TOM GREEN COUNTY IN WEST CENTRAL TEXAS * UNTIL 1145 AM CDT * AT 837 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN 6 MILES SOUTHWEST OF CHRISTOVAL...OR ABOUT 16 MILES SOUTHEAST OF MERTZON. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY. * THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL REMAIN SOUTH OF KNICKERBOCKER THROUGH 1105 AM CDT * RAINFALL TOTALING 2 TO 4 INCHES HAS FALLEN IN THE WARNED AREA...WITH ADDITIONAL RAINFALL UP TO 2 INCHES EXPECTED THROUGH 1145 AM CDT 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. LAT...LON 3117 10068 3110 10055 3131 10026 3143 10057
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 Aug 28, 3:07 AM CDT, 5 hours 33 minutes earlier.
Area forecast discussion, Aug 28, 3:07 AM CDT, 5 hours 33 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 307 AM CDT TUE AUG 28 2001 PERSISTENT SHEAR AXIS CONTINUES ACROSS WEST CENTRAL TEXAS EARLY THIS MORNING...WITH SCATTERED SHOWERS REDEVELOPING ACROSS THE NORTHERN EDWARDS PLATEAU AND SOUTHERN CONCHO VALLEY. WATER VAPOR IMAGERY SHOWING THAT DRIER AIR ACROSS MUCH OF WEST TEXAS HAS MOVED INTO THE BIG COUNTRY ...BUT SOUTHEAST MOVEMENT OF THE DRIER AIR HAS ALMOST STALLED. AT THE SURFACE...MOISTURE ALSO REMAINS HIGH WITH DEWPOINTS IN THE UPPER 60S TO AROUND 70. WHATS LEFT OF THE OLD FRONTAL BOUNDARY HAS WASHED OUT. MODELS CONSISTENT IN KEEPING THE SHEAR AXIS ACROSS THE AREA THROUGH MID WEEK. MODELS ALSO DRAG EVEN BETTER MOISTURE INTO AT LEAST THE SOUTHEAST HALF OF THE AREA BY WEDNESDAY...AS WAVE SPAWNING DEEP CONVECTION SOUTH OF BROWNSVILLE MOVES INTO CENTRAL TEXAS. STILL...AVIATION HAS BEEN TOO WET THE LAST SEVERAL DAYS WILL LEAN MORE TOWARDS AN ETA AND NGM SOLUTION AND SHOW SLIGHTLY REDUCED POPS. BEST RAIN CHANCES SOUTHEAST ACROSS THE NORTHWEST HILL COUNTRY...WITH SMALLER POPS ACROSS THE BIG COUNTRY. EVEN THE WET AVIATION FINALLY DRAWS DRIER AIR ACROSS WEST CENTRAL TEXAS BY THURSDAY...AS A 500 MB TROUGH EASES EAST INTO CENTRAL TEXAS. NEXT TROUGH MOVES INTO THE AREA FOR THE WEEKEND...PUSHING THE NEXT FRONT INTO THE AREA. WILL GO AHEAD AND INTRODUCE POPS FOR SATURDAY. ABI 088/069/085/070 2232 SJT 087/069/085/070 3232 JCT 086/069/084/070 5353 .SJT...NONE. 07
In the hours before
Special weather statement, Aug 28, 5:30 AM CDT, 3 hours 10 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-281500- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 530 AM CDT TUE AUG 28 2001 ...SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS MUCH OF WEST CENTRAL TEXAS THROUGH TONIGHT... AS A MOIST AIRMASS COMBINES WITH A STATIONARY SHEAR AXIS IN THE MID AND UPPER LEVELS...A CHANCE OF THUNDERSTORMS WILL EXIST THROUGH THIS EVENING. THE BEST CHANCE FOR THUNDERSTORM DEVELOPMENT WILL BE TO THE SOUTHEAST OF AN OZONA...SAN ANGELO TO BROWNWOOD LINE. THUNDERSTORMS THAT DO FORM ARE EXPECTED TO MOVE SLOWLY. THOUGH THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS...HEAVY RAINFALL...WIND GUSTS TO 30 MPH AND OCCASIONAL LIGHTNING WILL BE POSSIBLE WITH THE STRONGER STORMS. SPOTTER ACTIVATION IS NOT ANTICIPATED. FOR THE SOUTHWEST TEXAS AND SOUTHEAST NEW MEXICO OUTLOOK SEE PRODUCT LBBSPSMAF. FOR THE SOUTH PLAINS OUTLOOK SEE PRODUCT LBBSPSLBB. FOR THE CENTRAL OKLAHOMA OUTLOOK SEE PRODUCT OKCSPSOKC. FOR THE NORTH TEXAS OUTLOOK SEE PRODUCT FTWSPSFTW. FOR THE SOUTH CENTRAL TEXAS OUTLOOK SEE PRODUCT SATSPSSAT. 22/RUBIN
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:25 AM CDT | Flash Flood Warning | SJT | Irion | 3 hr |
| Aug 28, 6:15 PM CDT | Flash Flood Warning | SJT | Schleicher | 4 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every 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.