Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 75, NWS Austin/San Antonio, TX

June 2, 2003DeWitt County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 2, 2003, 7:04 PM CDT for DeWitt County, Lavaca County, Texas. It was in force for 26 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: Jun 2, 2003, 7:04 PM CDT (00:04 UTC)
Expired: Jun 2, 2003, 7:30 PM CDT
In force: 26 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

Counties DeWitt County, TX, Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 108 km from the middle of the area, began a volume at 00:08 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 2, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 0.1 hours before the alert went out and 151 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: 3099 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 966 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

628 
WUUS54 KEWX 030004
SVRSAT
TXC123-285-030030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
703 PM CDT MON JUN 2 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  LAVACA
  DEWITT

* UNTIL 730 PM CDT

* AT 703 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORM FROM 10 MILES NORTHWEST OF SPEAKS
  TO 10 MILES SOUTHEAST OF YOAKUM TO ARNECKVILLE...MOVING SOUTHEAST
  AT 35 MPH.

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.


LAT...LON 2887 9762 2877 9754 2905 9694 2936 9661
          2954 9677

$$

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 Jun 2, 6:20 PM CDT, 44 minutes earlier.

Area forecast discussion, Jun 2, 6:20 PM CDT, 44 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
620 PM CDT MON JUN 2 2003

QUICK UPDATE TO REMOVE SVR TSTM WATCH #462 AND ADJUST WORDING BASED
ON RADAR.
06/04/JB

SIGNIFICANT SHORT WAVE OVER CENTRAL TEXAS MOVING SOUTHEAST WITH
DEVELOPMENT OF THUNDERSTORMS ACROSS NORTHERN HILL COUNTRY. THIS
SHORT WAVE (AND RESULTING CONVECTION) SHOULD MOVE INTO NORTHEASTERN
AREAS BY LATE AFTERNOON AND PUSH OUT OF AREA BY LATE EVENING.
RESIDUAL MOISTURE AND BOUNDARIES LEFT FROM THIS ACTIVITY MAY BE
ENOUGH FOR WIDELY SCATTERED DEVELOPMENT TOMORROW AFTERNOON OVER
HILLS AND EASTERN PORTIONS OF CWA...THOUGH UPPER DYNAMICS WEAK.

CONTINUED WEAKENING OF UPPER RIDGE WEDNESDAY AND THURSDAY WILL
PROVIDE MORE FAVORABLE ENVIRONMENT FOR WIDELY SCATTERED SHOWERS AND
STORMS AS MOIST SOUTHERLY LOW LEVEL GULF FLOW CONTINUES.

ANOTHER SHORT WAVE WILL MOVE ACROSS THE SOUTHERN U.S. PLAINS FRIDAY
WITH WEAK TROFFINESS OVER SOUTH TEXAS AND CONTINUED CHANCES FOR
RAIN. RESIDUAL MOISTURE MAY AGAIN HELP DEVELOP SHOWERS...STORMS OVER
THE WEEKEND WITH ACTIVITY TAPERING OFF BY NEXT MONDAY AS WESTERLIES
SET UP OVER AREA.

PRELIMS...
AUS BE 072/093 072/092 073 02322 0000/0000/0000
    EEBBB 087/072 087/066 086/069 094/070 093 33233322220
DRT BE 077/095 075/094 075 02012 0000/0000/0000
    EEBBB 093/074 091/069 090/073 097/074 096 22222222220
SAT BE 076/095 075/090 074 02322 0000/0000/0000
    EEBBB 088/073 087/067 087/071 092/072 091 22233322220

.EWX...SEVERE THUNDERSTORM WATCH #462 FOR NORTHERN PORTIONS SOUTH
CENTRAL TEXAS TIL 23Z.
...SEVERE THUNDERSTORM WATCH #464 FOR CENTRAL AND SOUTHERN PORTIONS
OF SOUTH CENTRAL TEXAS TIL 01Z.

Hazardous weather outlook, Jun 2, 5:30 AM CDT, 13 hours 34 minutes before

TXZ171>173-183>194-202>209-217>225-031100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
530 AM CDT MON JUN 2 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY

OUTFLOW BOUNDARIES FROM THUNDERSTORMS OVER WEST CENTRAL TEXAS...AN
UPPER LEVEL DISTURBANCE...AND MOIST GULF AIR WILL BRING A SLIGHT
RISK FOR ISOLATED SEVERE THUNDERSTORMS THIS AFTERNOON. THE MAIN
THREAT AREA IS ALONG AND NORTHEAST OF TEXAS HIGHWAY 71...FROM LLANO
TO AUSTIN TO LA GRANGE. THE MAIN SEVERE THREATS ARE LARGE HAIL AND
DAMAGING WINDS. THE PRIMARY THREAT TIME IS FROM 2 TO 7 PM.

.DAYS TWO THROUGH SEVEN...

A SERIES OF UPPER LEVEL DISTURBANCES WILL BRING ISOLATED TO
SCATTERED SHOWERS AND THUNDERSTORMS EACH DAY. THERE IS AN OUTSIDE
CHANCE A FEW OF THESE STORMS MAY BECOME SEVERE...BUT NO WIDESPREAD
SEVERE WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

In the hours before

Local storm report, Jun 2, 4:08 PM CDT, 2 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
408 PM CDT MON JUN 2 2003

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

0254 PM    HORSESHOE BAY             TX   TORNADO
06/02/03   LLANO                          REPORTED BY LCRA
SPOTTER

0400 PM    SISTERDALE                TX   1.25 INCH HAIL
06/02/03   KENDALL                        REPORTED BY CO-OP
                                          OBSERVERS

JPB

Local storm report, Jun 2, 5:09 PM CDT, 1 hour 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
509 PM CDT MON JUN 2 2003

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

0217 PM    LLANO                     TX   64 MPH TSTM WIND GUST
06/02/03   LLANO

0444 PM    BUDA                      TX   63 MPH TSTM WIND GUST
06/02/03   HAYS

0458 PM    5 N SAN MARCOS            TX   .75 INCH HAIL
06/02/03   HAYS                           REPORTED BY
HAYS CO EMC

JPB

Local storm report, Jun 2, 5:59 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
559 PM CDT MON JUN 2 2003

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

0450 PM    4 E SAN MARCOS            TX   WIND DAMAGE
06/02/03   CALDWELL                       ROOF AND TREE
                                          DAMAGEREPORTED BY SPOTTERS

JPB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 1:19 PM CDT	Severe Thunderstorm Warning	EWX	Kerr	56 min
Jun 3, 1:25 PM CDT	Severe Thunderstorm Warning	EWX	Kendall	65 min
Jun 3, 2:03 PM CDT	Flash Flood Warning	EWX	Kendall	3 hr
Jun 3, 2:15 PM CDT	Severe Thunderstorm Warning	EWX	Bandera	45 min
Jun 3, 2:45 PM CDT	Severe Thunderstorm Warning	EWX	Medina	60 min
Jun 3, 3:00 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	60 min
Jun 3, 3:39 PM CDT	Severe Thunderstorm Warning	EWX	Wilson	51 min
Jun 3, 3:47 PM CDT	Severe Thunderstorm Warning	EWX	Medina	43 min
Jun 3, 3:51 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	69 min
Jun 3, 3:56 PM CDT	Severe Thunderstorm Warning	EWX	Bexar	34 min
Jun 3, 3:58 PM CDT	Tornado Warning	EWX	Wilson	62 min
Jun 3, 4:01 PM CDT	Severe Thunderstorm Warning	EWX	Frio	59 min
Jun 3, 4:36 PM CDT	Tornado Warning	EWX	Atascosa	24 min
Jun 3, 5:02 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa	28 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; radar from the NEXRAD Level II archive.