Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 129, NWS Austin/San Antonio, TX

July 11, 2003Edwards County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jul 11, 2003, 4:02 PM CDT for Edwards County, Texas. It was in force for 58 min. 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 11, 2003, 4:02 PM CDT (21:02 UTC)
Expired
Jul 11, 2003, 5:00 PM CDT
In force
58 min
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Edwards County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm 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

Del Rio, TX (KDRT), launched 12:00Z, 9.0 hours before the alert went out and 94 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, Del Rio, TX at 12:00Z on 2003-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2088 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2003-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.1939Sfc1 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
2088 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
926 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-7 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

174 
WUUS54 KEWX 112102
SVRSAT
TXC137-112200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
400 PM CDT FRI JUL 11 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  EDWARDS

* UNTIL 500 PM CDT

* AT 400 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  CLUSTER OF SEVERE THUNDERSTORMS 5 TO 20 MILES NORTHWEST OF
  ROCKSPRINGS...MOVING WEST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER RURAL EDWARDS COUNTY
  CROSSING HIGHWAY 55 NORTHWEST OF ROCKSPRINGS.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS LOW WATER CROSSINGS...
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND
RIVERS MAY ALSO RISE. SEEK HIGHER GROUND IF THREATENED BY FLOOD
WATERS.


LAT...LON 3027 10068 2987 10068 2995 10002 3029 10002

$$

What forecasters said that day

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

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 11, 1:30 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Jul 11, 1:30 PM CDT, 2 hours 32 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
130 PM CDT FRI JUL 11 2003

THIS AFTERNOON A CONVECTIVE COMPLEX WAS LOCATED OVER EAST TEXAS
PROPAGATING SOUTHWESTWARD TOWARDS THE EASTERN COUNTIES OF THE CWFA.
EXPECT THIS COMPLEX TO HOLD TOGETHER BRINGING SCATTERED LATE
AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS TO THE EASTERN HALF
OF THE CWFA. MAY HAVE DAMAGING WIND GUSTS (MICROBURSTS) WITH THE
STRONGER STORMS BEFORE THEY WEAKEN AND DISSIPATE LATER THIS EVENING.
WILL INCLUDE THE MENTION OF SEVERE WITH DAMAGING WINDS FOR THE
NORTHEAST COUNTIES THIS EVENING. THE HAZARDOUS WEATHER OUTLOOK WILL
BE UPDATED.

OVER THE WEEKEND THE UPPER LEVEL RIDGE OVER THE SOUTHWESTERN U.S.
WILL BUILD EASTWARD AND HELP SUPPRESS MOST CONVECTION ACROSS THE
CWFA. THE EXCEPTION MAY BE ALONG AND NEAR THE MIDDLE COAST DUE TO
SEA-BREEZE CONVERGENCE. THE UPPER RIDGE WILL ALSO RESULT IN WARMER
TEMPS OVER THE WEEKEND BUT SOIL MOISTURE WILL MODERATE THE WARMUP.

THE LATEST TRACK OF CLAUDETTE STILL BRINGS IT INTO BROWNSVILLE
BY TUESDAY MORNING AND CONTINUING WESTWARD INTO MEXICO.  THIS
WESTWARD MOVEMENT IS BASED ON THE UPPER RIDGE EXTENDING EASTWARD
INTO TEXAS BLOCKING ANY NORTHWARD TURN OF CLAUDETTE.  THE EXTENDED
FCST FOR TEMPS AND PCPN EARLY NEXT WEEK WILL REFLECT THIS
THINKING.

PRELIM NUMBERS...
AUS 074/095 073/094 073 40022
DRT 075/100 076/099 076 00000
SAT 076/096 075/095 075 30022

.EWX...NONE.

13/04
Hazardous weather outlook, Jul 11, 1:50 PM CDT, 2 hours 12 minutes before
TXZ171>173-183>194-202>209-217>225-228-121200-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
150 PM CDT FRI JUL 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.
AN UPPER LEVEL DISTURBANCE MOVING TO THE SOUTHWEST OVER CENTRAL TEXAS
WILL GENERATE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ACROSS
SOUTH CENTRAL TEXAS AND THE TEXAS HILL COUNTRY LATER THIS AFTERNOON
AND THIS EVENING.  THERE IS A POSSIBILITY OF SEVERE THUNDERSTORMS
ALONG AND NORTHEAST OF A BURNET TO BLANCO TO SAN MARCOS TO LA GRANGE
LINE.  THE MAIN THREAT WILL BE DAMAGING WIND GUSTS.  A SECONDARY
THREAT WILL BE LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
BASED ON THE LATEST FORECASTS FROM THE TROPICAL PREDICTION CENTER...
TROPICAL STORM CLAUDETTE WILL MAKE LANDFALL ALONG THE LOWER TEXAS ON
TUESDAY AND THEN MOVE INTO AND ACROSS NORTHEASTERN MEXICO WEDNESDAY
AND THURSDAY.  THE REMNANTS OF CLAUDETTE MAY IMPACT SOUTH CENTRAL
TEXAS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 4:18 PM CDTSevere Thunderstorm WarningEWXBurnet, Llano57 min
Jul 11, 6:08 PM CDTSevere Thunderstorm WarningEWXBurnet52 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm 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.