Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 86, NWS San Angelo, TX

October 11, 2003Runnels County, Texas

NWS San Angelo, TX issued this flash flood warning at Oct 11, 2003, 11:21 AM CDT for Runnels County, Texas. It was in force for 6 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
Oct 11, 2003, 11:21 AM CDT (16:21 UTC)
Expired
Oct 11, 2003, 5:15 PM CDT
In force
6 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 12:00Z, 4.4 hours before the alert went out and 208 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 12:00Z on 2003-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 765 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 12:00Z on 2003-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939587897Sfc1 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
765 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
-7 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 111629
FFWSJT
TXC399-112215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1121 AM CDT SAT OCT 11 2003

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

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

* UNTIL 515 PM CDT

* AT 1119 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN FALLING ACROSS WINTERS...HATCHEL...AND BALLINGER...MOVING 
  NORTHEAST AT 20 MPH.  AT 1119 AM...THE RUNNELS COUNTY SHERRIFS 
  REPORTED SOME HIGH WATER IN BALLINGER...AND THE DITCHES ALONG   
  HIGHWAY 83 BETWEEN WINTERS AND BALLINGERS WERE RUNNING FULL. 

* THE FLASH FLOOD WARNINGS WILL AFFECT THE FOLLOWING MAJOR TOWNS...
  HATCHEL...WINTERS...AND BALLINGER.  

* RAINFALL TOTALING UP TO ONE AND A HALF INCHES HAS FALLEN IN THE 
  WARNED AREA...WITH ADDITIONAL RAINFALL OF HALF AN INCH EXPECTED 
  THROUGH 215 PM CDT

TURN AROUND DONT DROWN DO NOT DRIVE INTO AREAS WHERE WATER COVERS
THE ROAD. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW SAFE PASSAGE.
REMEMBER...MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES.

LAT...LON 3167 10015 3167 9983 3198 9978 3205 10011

$$
2 follow-up statements
000 
WGUS74 KSJT 111939
FFSSJT
TXC095-399-451-413-112215-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
240 PM CDT SAT OCT 11 2003

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR TOM GREEN... 
RUNNELS...AND CONCHO...COUNTIES UNTIL 5 PM CDT...
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SCHLEICHER
COUNTY UNTIL 645 PM CDT...

AT 240 PM CDT...RADAR SHOWED THE HEAVY RAIN HAD DIMINISHED.  
HOWEVER...AS A FRONT APPROACHES FROM THE NORTH...SHOWERS AND 
THUNDERSTORMS MAY REDEVELOP AND PRODUCE FLOODING RAINFALL.

DOPPLER RADAR ESTIMATED THAT A HALF TO 2 INCHES OF RAIN HAS FALLEN 
OVER THE CONCHO VALLEY SINCE 11 AM CDT WITH ADDITIONAL RAINFALL UP 
TO HALF AN INCH BY 500 PM CDT. THIS WILL CONTINUE TO PRODUCE 
FLOODING OF LOW WATER CROSSINGS AND POOR DRAINAGE AREAS.

EXCESSIVE RUNOFF FROM THESE STORMS WILL PRODUCE FLOODING OF
STREETS...INTERSECTIONS...AND OTHER FLOOD PRONE AREAS ACROSS THE
CITY. DO NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADS OR AROUND
BARRICADES SET UP AT LOW WATER CROSSINGS. MOST FLASH FLOOD DEATHS
OCCUR IN VEHICLES.

REMEMBER...TURN AROUND...DONT DROWN.

$$
000 
WGUS74 KSJT 112151
FFSSJT
TXC095-399-451-413-112200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
450 PM CDT SAT OCT 11 2003

THE FLASH FLOOD WARNINGS FOR TOM GREEN...RUNNELS...CONCHO...AND 
SCHLEICHER COUNTIES HAVE BEEN CANCELLED.

A FLASH FLOOD WATCH CONTINUES IN EFFECT TONIGHT. ADDITIONAL RAINFALL 
IS EXPECTED TO DEVELOP LATER THIS EVENING.

$$
9

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 Oct 11, 9:00 AM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Oct 11, 9:00 AM CDT, 2 hours 21 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
900 AM CDT SAT OCT 11 2003

.CURRENT...COMPLEX OF SHOWERS AND THUNDERSTORMS APPROACHING THE AREA
AT THIS TIME. MODELS STILL SHOW A SIGNIFICANT FLOODING EVENT SHAPING
UP FOR THE SOUTHERN COUNTIES AND WILL BE UPDATING ZONES AND WILL BE
ISSUING A FLASH FLOOD WATCH THROUGH TONIGHT FOR THE SOUTHERN HALF OF
THE FORECAST AREA AT THIS TIME AND DECIDE OTHER AREAS AT LATER TIME
IF NEEDED.

FLOOD WATCH WILL BE COMMING OUT SHORTLY...BUT WILL NEED TO DO SOME
SERIOUS WORK ON THE GRIDS...SO IT MAY BE AN HOUR BEFORE NEW ZONES
COME OUT.

27/BRAZZELL

CURRENT...SATELLITE IMAGERY INDICATING A CONVECTIVE COMPLEX
DEVELOPING OVER THE BIG BEND. AT THE SURFACE...DEWPOINTS REMAIN IN
THE MID 60S. SURFACE ANALYSIS INDICATES COLD FRONT ABOUT TO PUSH
INTO THE TEXAS PANHANDLE.

DAYS 1-3...MODELS CONTINUE TO PRESENT DIVERGENT SOLUTIONS. THE AVN
CONTINUES TO BE MORE AGGRESSIVE WITH MOISTURE...POPS...AND COOLER
TEMPERATURES. WILL TREND FORECAST PACKAGE TOWARD THE AVN.
HOWEVER...BELIEVE SLIGHTLY LOWER POPS...FOR THE FIRST TWO
PERIODS...THAN THAT WHICH MAV MOS CURRENTLY PRESENTS BEST GIVEN
DEGREE OF UNCERTAINTY. MODELS ALSO INDICATE MOSTLY CLOUDY TO CLOUDY
SKIES WILL LINGER THROUGH TONIGHT BEFORE GRADUALLY CLEARING THROUGH
MONDAY AS DRIER AIR MOVES INTO TEXAS BEHIND THE FRONT.

DAYS 4-7...AGAIN...NO MAJOR CHANGES HERE WITH MAIN FOCUS ON THE
SHORT TERM.

CCF PRELIMS...

ABI 075/053/072/053/078 46211
SJT 076/055/071/053/079 67421
JCT 075/063/072/058/078 77642

.SJT...FFA MERTZON...SAN ANGELO...SAN SABA SOUTH.

23/HUBER
Hazardous weather outlook, Oct 11, 5:30 AM CDT, 5 hours 51 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-121030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
530 AM CDT SAT OCT 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...

A COLD FRONT PUSHING INTO WEST CENTRAL TEXAS TODAY WILL COMBINE WITH
ABUNDANT MOISTURE TO CREATE A GOOD CHANCE FOR SHOWERS AND
THUNDERSTORMS THAT COULD PRODUCE LOCALLY HEAVY RAINFALL. UPPER LEVEL
DISTURBANCES MOVING INTO THE AREA FROM MEXICO WILL ENHANCE
THUNDERSTORM DEVELOPMENT. NO SEVERE WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...

CHANCES FOR RAINFALL WILL CONTINUE INTO SUNDAY BUT DRIER AIR WILL
FILTER INTO THE AREA ON MONDAY BRINGING A MORE FALL LIKE WEATHER
PATTERN FOR THE COMING WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

15

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 9:59 AM CDTFlash Flood WarningSJTCrockett, Irion, Schleicher, Sutton, Tom Green3 hr
Oct 11, 11:33 AM CDTFlash Flood WarningSJTColeman6 hr
Oct 11, 12:25 PM CDTFlash Flood WarningSJTMenard6 hr
Oct 11, 12:59 PM CDTFlash Flood WarningSJTConcho, Tom Green4 hr
Oct 11, 1:00 PM CDTFlash Flood WarningSJTKimble, Schleicher, Sutton6 hr
Oct 11, 1:45 PM CDTFlash Flood WarningSJTBrown6 hr
Oct 11, 2:35 PM CDTFlash Flood WarningSJTMcCulloch, Mason, San Saba5 hr

Nearby

Flash Flood Warnings in Texas, 2003Every flash flood warning in 2003

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.