Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 46, NWS Austin/San Antonio, TX

April 24, 2003Fayette County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 24, 2003, 7:28 AM CDT for Fayette County, Texas. It was in force for 62 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: Apr 24, 2003, 7:28 AM CDT (12:28 UTC)
Expired: Apr 24, 2003, 8:30 AM CDT
In force: 62 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Fayette 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

Corpus Christi, TX (KCRP), launched 12:00Z, 0.5 hours before the alert went out and 245 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2198 J/kg
Mixed-layer CIN: -178 J/kg
Mixed-layer LCL: 603 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

741 
WUUS54 KEWX 241228
SVRSAT
TXC149-241330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
728 AM CDT THU APR 24 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 830 AM CDT

* AT 728 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CISTERN...OR ABOUT 11 MILES SOUTH OF
  SMITHVILLE...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  6 MILES NORTHWEST OF MULDOON AT 735 AM
  5 MILES NORTHWEST OF LA GRANGE AT 800 AM
  OVER ROUND TOP AT 825 AM

* THIS WARNING INCLUDES LOCATIONS IN AND AROUND...
  CISTERN
  MULDOON
  LA GRANGE
  ROUND TOP

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.


LAT...LON 2979 9732 2972 9703 2997 9659 3016 9670
          3004 9699

$$

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 Apr 24, 7:22 AM CDT, 6 minutes earlier.

Area forecast discussion, Apr 24, 7:22 AM CDT, 6 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATE FOR TOR WATCH
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
722 AM CDT THU APR 24 2003

SVR STORM FLARED OVER CALDWELL COUNTY WITH DIME SIZE HAIL.
NEW TOR WATCH #155 WILL COVER EXTREME EASTERN COUNTIES ONLY.

TODAY THROUGH MONDAY...
PROGRESSIVE SYSTEMS FLYING THROUGH THE NORTHERN HALF OF THE STATE,
MOVING FARTHER AWAY AS SUMMER APPROACHES.  THE UPPER LOW OVER KANSAS
IS PROGGED TO MOVE OVER MISSOURI FRIDAY WITH A SUBSIDENT NORTHWEST
FLOW ALOFT OVER TEXAS. THE DRY LINE WILL MOVE TOWARD THE EASTERN
ESCARPMENT THIS AFTERNOON. WILL BE LACKING SUFFICIENT DAYTIME HEAT
TO GENERATE STRONG TO SEVERE THUNDERSTORMS (CONVECTIVE TEMPS, PER
GOES SOUNDINGS, ARE IN THE UPPER 90S). UPPER RIDGING TAKES HOLD
FRIDAY KEEPING THE AIR DRY AND ALLOWS TEMPS TO RISE QUICKLY.  THEN A
SHORT WAVE TROUGH PUSHES THROUGH THE RIDGE MONDAY SENDING CLUMPS OF
MID AND HIGH CLOUDS.  AVN HAS CONVECTIVE FEEDBACK  VORT MAXES
ROAMING THROUGH MONDAY AFTERNOON.  WILL DISREGARD THESE.  AS FAR AS
PRECIP GOES DURING THIS PERIOD, LOOK TO THE DRY LINE OUT WEST FOR
LATE AFTERNOON/EVENING SHOWERS OR THUNDERSTORMS IF CONVECTIVE TEMPS
ARE REACHED, AND SOME LIGHT RAIN UNDER THE LOW LEVEL JET AT NIGHT
WHILE P.W.S ARE GREATER THAN 1.3.

TUESDAY AND WEDNESDAY...THE TYPICAL SOUTH TEXAS WEATHER SCENARIO
SOUTHERLY SFC WINDS WITH LATE NIGHT STRATUS AND PARTLY CLOUDY, HUMID
AFTERNOONS.

PRELIM NUMBERS...
AUS 87 56 90 53  3000
SAT 88 58 85 54  2000
DRT 92 58 90 55  0000

.EWX...TORNADO WATCH FOR LEE FAYETTE AND LAVACA COUNTIES UNTIL 1
PM...

06/04

Hazardous weather outlook, Apr 24, 5:40 AM CDT, 1 hour 48 minutes before

TXZ171>173-183>194-202>209-217>225-228-251100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
540 AM CDT THU APR 24 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY

A DRYLINE WILL MOVE ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY
TODAY WHILE INTERACTING WITH A MOIST AIRMASS AHEAD OF IT.  SCATTERED
SHOWERS AND THUNDERSTORMS ARE POSSIBLE MAINLY THIS MORNING ALONG AND
EAST OF A MOUNTAIN HOME TO DILLEY LINE.  DUE TO A MORE STABLE AIRMASS
THIS MORNING...SEVERE THUNDERSTORMS ARE NOT EXPECTED.  AFTER THE
DRYLINE PASSES...RAIN CHANCES WILL END.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE NEXT CHANCE FOR SHOWERS WILL BE MONDAY INTO TUESDAY WITH THE NEXT
CHANCE FOR THUNDERSTORMS DEVELOPING BY WEDNESDAY.  HOWEVER...NO
HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT.

In the hours before

Local storm report, Apr 24, 7:10 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
710 AM CDT THU APR 24 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0705 AM    MCMAHON                   TX   .75 INCH HAIL
04/24/03   CALDWELL                       REPORTED BY
                                          COOP OBSERVER

CM

Local storm report, Apr 24, 7:10 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
710 AM CDT THU APR 24 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0705 AM    MCMAHAN                   TX   .75 INCH HAIL
04/24/03   CALDWELL                       REPORTED BY
                                          COOP OBSERVER

CM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:06 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell	54 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every 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.