Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 28, NWS San Angelo, TX

July 3, 2002Runnels County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 3, 2002, 3:18 AM CDT for Runnels 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 as issued.

The facts

Issued
Jul 3, 2002, 3:18 AM CDT (08:18 UTC)
Expired
Jul 3, 2002, 6:15 AM CDT
In force
3 hr
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Runnels 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, 8.3 hours before the alert went out and 206 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 2002-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1600 joules per kilogram.LCLLFCEL10008507005003002001001 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 2002-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
1600 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1807 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 030818
FFWSJT
TXC399-031115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
318 AM CDT WED JUL 3 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RUNNELS COUNTY IN SOUTHWEST TEXAS

* UNTIL 615 AM CDT

* AT 318 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
RAIN NEAR ROWENA AND BALLINGER...RAINFALL HAS PERSISTED OVER MUCH OF 
RUNNELS COUNTY OVER THE PAST TWO HOURS...ADDITIONAL HEAVY RAIN IS 
EXPECTED THROUGH 6 AM.

* RAINFALL TOTALING 1 TO 3 INCHES HAS FALLEN IN THE WARNED 
AREA...WITH ADDITIONAL RAINFALL UP TO 2 INCH EXPECTED THROUGH 615 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 3204 10021 3161 10019 3163 9973 3205 9974

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 Jul 3, 2:51 AM CDT, 27 minutes earlier.

Area forecast discussion, Jul 3, 2:51 AM CDT, 27 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
251 AM CDT WED JUL 3 2002

THIS IS OUR RAIN DAY...RAIN CHANCES FOR WC TX DONT GET ANY BETTER
IN JULY.

TROPICAL AIRMASS THUNDERSTORMS CONTINUED TO MOVE CLOSER TO OUR
FORECAST AREA OVERNIGHT...WITH RAIN PERSISTING OVER THE EASTERN
THIRD OF OUR COUNTIES.  AS THE SYSTEM SLOWLY MOVES WEST...RAIN WILL
PROGRESS WEST AS WELL.

RUC HAS DONE A VERY GOOD JOB OF HANDLING EARLY MORNING RAINS...SO
WILL PLACE HIGH CONFIDENCE IN RAIN AND GO ABOVE GUIDANCE.  GUIDANCE
TEMPS LOOK GOOD WITH CLOUDS AND RAIN.  WILL GO WITH 50-80 POPS OVER
ENTIRE AREA...WITH THE LOWEST CHANCES WEST.  RAIN CHANCES PERSIST
TONIGHT...WITH ABOVE AVERAGE POPS FOR THE 4TH...WITH THE HIGHEST
CHANCES WEST...WILL ALSO INCLUDE SMALL POPS FOR FIREWORKS PERIOD FOR
THE WEST HALF OF THE CWA.

ALAS IT IS JULY AND AS THE UPPER RIDGE BUILDS OVER THE
PLAINS...DRIER WARMER WEATHER TAKES HOLD FOR THE WEEKEND AND OUT
PERIODS.  WILL DISCOUNT GULF MOISTURE WORKING INTO WCENTRL TX LATE
IN THE WEEKEND AND EARLY NEXT WEEK...SO EXTENDED WORDING WILL STAY
DRY WITH SEASONAL TEMPS.

WILL RE-ISSUE THE FLASH FLOOD WATCH...WILL TAKE OUT SUTTON...SINCE
VERY LITTLE RAIN HAS FALLEN THAT FAR WEST SO FAR...BUT WILL ADD
BROWN CALLAHAN AND COLEMAN COUNTIES.

ABI 084/068/086/070 7432
SJT 084/069/086/070 7532
JCT 083/070/087/071 8321

.SJT...FLASH FLOOD WATCH FOR MASON...MENARD... MCCULLOCH...
KIMBLE...SAN SABA...BROWN...CALLAHAN...AND COLEMAN COUNTIES.

25

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 11:46 PM CDTFlash Flood WarningSJTSan Saba6 hr
Jul 3, 2:45 AM CDTFlash Flood WarningSJTBrown, Coleman3 hr
Jul 3, 3:14 AM CDTFlash Flood WarningSJTCallahan3 hr
Jul 3, 5:38 AM CDTFlash Flood WarningSJTColeman3 hr
Jul 3, 8:35 AM CDTFlash Flood WarningSJTColeman3 hr
Jul 3, 8:44 AM CDTFlash Flood WarningSJTBrown4 hr
Jul 3, 9:32 AM CDTFlash Flood WarningSJTCallahan3 hr
Jul 3, 12:36 PM CDTFlash Flood WarningSJTBrown3 hr
Jul 3, 3:15 PM CDTSevere Thunderstorm WarningSJTCrockett30 min
Jul 3, 3:28 PM CDTFlash Flood WarningSJTBrown4 hr

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.