Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 12, NWS San Angelo, TX

May 24, 2002Nolan County, Taylor County, Texas

NWS San Angelo, TX issued this flash flood warning at May 24, 2002, 7:32 PM CDT for Nolan County, Taylor County, Texas. 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 as issued.

The facts

Issued
May 24, 2002, 7:32 PM CDT (00:32 UTC)
Expired
May 24, 2002, 10:00 PM CDT
In force
2 hr
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

Counties Nolan County, TX, Taylor County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 0.5 hours before the alert went out and 207 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-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2002-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2002-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4382 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 250032
FFWSJT
TXC353-441-250300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
731 PM CDT FRI MAY 24 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TAYLOR COUNTY IN NORTH CENTRAL TEXAS
  EASTERN NOLAN COUNTY IN NORTHWEST TEXAS

* UNTIL 1000 PM CDT

* AT 727 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS WITH VERY HEAVY RAIN OVER EASTERN NOLAN AND WESTERN  
  TAYLOR COUNTIES...MOVING EAST AT 15 MPH.

* RAINFALL OF 2 TO 3 INCHES HAS FALLEN IN THE WARNED AREA...WITH     
  ADDITIONAL RAINFALL UP TO 3 INCHES EXPECTED THROUGH 9 PM 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 3249 10032 3219 10028 3210 9968 3250 9966

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 May 24, 2:50 PM CDT, 4 hours 42 minutes earlier.

Area forecast discussion, May 24, 2:50 PM CDT, 4 hours 42 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE SAN ANGELO TX
250 PM CDT FRI MAY 24 2002

WITH SUNSHINE AND GOOD MIXING TODAY...DRYLINE WILL LIKELY DEVELOP
ALONG AN IRAAN...BIG LAKE...COLORADO CITY LINE THIS EVENING.
ATMOSPHERE IS UNSTABLE WITH SATELLITE 17Z CAPES OF 3000 J/KG IN THE
WESTERN AND NORTHERN CWA. MESOETA CINH VALUES NEARLY ZERO AT 21Z THIS
AFTERNOON. STORMS THAT DEVELOP OFF THE DRYLINE WILL MOVE NORTHEAST
INTO THE CWA THIS EVENING. 15Z CONVECTIVE OUTLOOK INDICATED HASKELL
AND THROCKMORTON IN A MODERATE RISK OF SEVERE THUNDERSTORMS. AREAS
ALONG AND NORTH OF A STERLING CITY TO ROBERT LEE TO BROWNWOOD LINE
WERE IN A SLIGHT RISK.

COLD FRONT REMAINS IN THE PANHANDLE AT 19Z...FROM NEAR AMARILLO TO
GAGE. FRONT WILL BE SLOW MOVING TONIGHT...BUT SHOULD GET SOME HELP AS
5H SHORTWAVE MOVES ACROSS THE CENTRAL PLAINS OVERNIGHT. MESOETA AND
AVN TIMING AGREE IN BRINGING THE FRONT INTO THE BIG COUNTRY IN THE
MORNING...THEN STALLING IN THE CONCHO VALLEY IN THE AFTERNOON. FRONT
WILL BE SHALLOW AND LACKING UPPER LEVEL SUPPORT...BUT WITH INSTABILITY
AND A FAVORABLE WIND SHEAR PROFILE NEAR DRYLINE AND FRONT...MAY SEE
SOME STORMS. AGAIN SOME STORMS MAY BECOME SEVERE.

SUNDAY AN UPPER LEVEL SHORTWAVE MOVES OUT OF THE 4-CORNERS AREA AND
SLOWLY MOVES EAST INTO KANSAS WEDNESDAY. THIS MAY SLIGHTLY ENHANCE THE
THUNDERSTORMS POTENTIAL SUNDAY/SUNDAY EVENING.

MONDAY THROUGH FRIDAY OF NEXT WEEK WILL SEE NORTHWEST TO NORTH FLOW
ALOFT AS UPPER RIDGE DEVELOPS OVER THE SOUTHERN ROCKY MOUNTAINS. WITH
MOISTURE HANGING AROUND...AND PROBABLY A WEAK CAP...THERE SHOULD BE
SLIGHT CHANCE OF THUNDERSTORMS EACH DAY.

PRELIMS...

ABI 065/079/062/082/063 3233
SJT 068/087/063/086/064 2233
JCT 068/089/065/087/065 1233

.SJT...NONE.

04

In the hours before

Special weather statement, May 24, 2:22 PM CDT, 5 hours 10 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-242315-

WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
222 PM CDT FRI MAY 24 2002

SPOTTER ACTIVATION MAY BE REQUIRED.

THE DRY LINE WILL MOVE EAST THIS AFTERNOON AND EVENING...ISOLATED
THUNDERSTORMS MAY FORM ACROSS THE WESTERN COUNTIES. TONIGHT...A COLD
FRONT MOVING THROUGH THE REGION TONIGHT AND SATURDAY WILL LIKELY SET
OFF THUNDERSTORMS ACROSS PARTS OF WEST CENTRAL TEXAS.  SOME OF THE
THUNDERSTORMS THAT FORM COULD BE SEVERE.  THE MAIN THREAT FOR SEVERE
WEATHER FOR THIS EVENING WILL BE ACROSS THE BIG COUNTRY AND THE
NORTHERN CONCHO VALLEY.

FOR ADDITIONAL INFORMATION PLEASE SEE STATEMENTS AND OUTLOOKS FROM
NATIONAL WEATHER SERVICE OFFICES ACROSS TEXAS...OKLAHOMA...AND NEW
MEXICO.

25

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:00 PM CDTTornado WarningSJTTaylor60 min
May 24, 7:09 PM CDTSevere Thunderstorm WarningSJTNolan66 min
May 24, 7:10 PM CDTTornado WarningSJTHaskell65 min
May 24, 7:20 PM CDTSevere Thunderstorm WarningSJTFisher, Jones55 min
May 24, 7:27 PM CDTSevere Thunderstorm WarningSJTShackelford78 min
May 24, 7:57 PM CDTTornado WarningSJTRunnels, Taylor63 min
May 24, 8:09 PM CDTSevere Thunderstorm WarningSJTCallahan81 min
May 24, 8:43 PM CDTTornado WarningSJTCallahan62 min
May 24, 8:57 PM CDTTornado WarningSJTRunnels63 min
May 24, 9:03 PM CDTSevere Thunderstorm WarningSJTColeman72 min
May 24, 9:44 PM CDTSevere Thunderstorm WarningSJTCallahan61 min
May 24, 9:44 PM CDTSevere Thunderstorm WarningSJTCallahan76 min
May 24, 9:54 PM CDTFlash Flood WarningSJTRunnels3 hr
May 24, 10:00 PM CDTTornado WarningSJTRunnels75 min
May 24, 10:20 PM CDTSevere Thunderstorm WarningSJTColeman70 min
May 24, 11:13 PM CDTTornado WarningSJTConcho, Runnels62 min
May 25, 12:20 AM CDTSevere Thunderstorm WarningSJTHaskell70 min
May 25, 12:36 AM CDTSevere Thunderstorm WarningSJTThrockmorton69 min
May 25, 12:38 AM CDTTornado WarningSJTHaskell67 min
May 25, 1:15 AM CDTTornado WarningSJTThrockmorton60 min
May 25, 1:30 AM CDTTornado WarningSJTShackelford60 min
May 25, 2:17 AM CDTSevere Thunderstorm WarningSJTThrockmorton28 min
May 25, 2:31 AM CDTSevere Thunderstorm WarningSJTShackelford59 min
May 25, 2:44 AM CDTTornado WarningSJTShackelford61 min
May 25, 2:49 AM CDTSevere Thunderstorm WarningSJTHaskell, Throckmorton56 min
May 25, 3:44 AM CDTSevere Thunderstorm WarningSJTShackelford46 min
May 25, 4:29 AM CDTFlash Flood WarningSJTThrockmorton4 hr
May 25, 8:21 AM CDTSevere Thunderstorm WarningSJTBrown69 min
May 25, 9:27 AM CDTSevere Thunderstorm WarningSJTBrown33 min
May 25, 4:36 PM CDTSevere Thunderstorm WarningSJTColeman69 min
May 25, 5:29 PM CDTSevere Thunderstorm WarningSJTCoke61 min
May 25, 6:31 PM CDTSevere Thunderstorm WarningSJTMcCulloch59 min
May 25, 6:34 PM CDTSevere Thunderstorm WarningSJTRunnels56 min
May 25, 6:49 PM CDTSevere Thunderstorm WarningSJTColeman56 min
May 25, 6:53 PM CDTSevere Thunderstorm WarningSJTCoke67 min

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.