Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 128, NWS Austin/San Antonio, TX

June 15, 2003Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 15, 2003, 5:11 AM CDT for Guadalupe County, Texas. It was in force for 64 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 15, 2003, 5:11 AM CDT (10:11 UTC)
Expired
Jun 15, 2003, 6:15 AM CDT
In force
64 min
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Guadalupe County, TX

The radar

The Austin/San Antonio radar (KEWX), 14 km from the middle of the area, began a volume at 10:15 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 nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 10.2 hours before the alert went out and 227 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, Corpus Christi, TX at 00:00Z on 2003-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2700 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, Corpus Christi, TX at 00:00Z on 2003-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
2700 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1178 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

139 
WUUS54 KEWX 151011
SVRSAT
TXC187-151115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
511 AM CDT SUN JUN 15 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 615 AM CDT

* AT 511 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER ZORN...OR ABOUT 6 MILES NORTHEAST OF 
  NEW BRAUNFELS...MOVING EAST SOUTHEAST AT 25 MPH.
 
SEGUIN AND GERONIMO ARE IN THE PATH OF THIS STORM.


LAT...LON 2982 9793 2969 9810 2957 9777 2966 9768

$$

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 15, 3:45 AM CDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jun 15, 3:45 AM CDT, 1 hour 26 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
345 AM CDT SUN JUN 15 2003

MID-JUNE UPPER LOW IS CREATING THE FOCUS FOR MAINLY NOCTURNAL
CONVECTION. WILL KEEP POPS HIGH IN THE DAYTIME, BUT EXPECT MOST OF
THE HEAVY RAINFALL TO OCCUR OUTSIDE OF A 10AM TO 3PM WINDOW. POPS TO
BE HIGH FOR THIS MORNING AS THE RAINS GOT A LATE START AND WILL
LIKELY CARRY OVER INTO MUCH OF THE MORNING--ESPECIALLY SOUTHWEST
WHERE MESO-ETA QPF IS HIGHEST.

WILL EXTEND FLASH FLOOD WATCH THROUGH THIS AFTERNOON FOR ALL AREAS
AS THE UPPER LOW IS WELL TRACKED BY CONSECTUTIVE RUNS OF THE AVN TO
REMAIN A PEST FOR CENTRAL AND SOUTH TX. WILL KEEP SEVERE IN THROUGH
DAY 1 WITH HEAVY RAIN MENTIONED FOR DAY 2 BEST CHANCE OF SEVERE
SHOULD AGAIN BE AT NIGHT, AND WITH SOME STABILITY FOLLOWING THIS
MORNINGS ROUND OF STORMS, SHOULD BECOME REDUCED OVER NORTHERN
SECTIONS FOR TODAY.

MOST MODEL DATA SUGGEST GRADUAL SHIFTING OF THE UPPER LOW TO THE
EAST IN THE TUES-THURS TIMEFRAME WITH UPPER RIDGING TAKING PLACE BY
NEXT WEEKEND. WILL HOLD CLOSE TO NEAR PERSISTENCE TEMPS EARLY, THEN
GIVING WAY TO GUIDANCES AND ABOVE CLIMATOLOGY TEMPS LATE THIS WEEK.

PRELIMINARY NUMBERS...
AUS 088/067/088/067/090 65443
DRT 092/072/092/072/096 55443
SAT 091/068/091/068/092 65443

.EWX...FLASH FLOOD WATCH THROUGH THIS AFTERNOON FOR ALL OF SOUTH
       CENTRAL TEXAS

18/2
Hazardous weather outlook, Jun 14, 6:00 AM CDT, 23 hours 11 minutes before
TXZ171>173-183>194-202>209-217>225-228-151200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
600 AM CDT SAT JUN 14 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT. AN UPPER LEVEL DISTURBANCE WILL MOVE SOUTHEAST ACROSS
NORTHWEST TEXAS THIS MORNING MOVING INTO NORTHERN PORTIONS OF SOUTH
CENTRAL TEXAS THIS AFTERNOON.  SCATTERED THUNDERSTORMS MAY DEVELOP AS
A RESULT AND A FEW OF THESE STORMS MAY BECOME SEVERE...IF LOW LEVEL
CONDITIONS DESTABILIZE AGAIN. MAIN THREATS ARE FROM LARGE HAIL AND
DAMAGING WINDS BUT AN ISOLATED TORNADO CANNOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...
OTHER STORMS MAY MOVE SOUTHWARD INTO SOUTH CENTRAL TEXAS SUNDAY IN AN
INCREASINGLY NORTH FLOW ALOFT WITH MORE POTENTIAL SEVERE WEATHER
AND HEAVY RAINS.  ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE
POSSIBLE MONDAY THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EVENING FOR
MUCH OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY.

In the hours before

Local storm report, Jun 15, 1:55 AM CDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
155 AM CDT SUN JUN 15 2003

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

0123 AM    ADAMS LAKE AT HWY 16N
           FREDERICKSBURG            TX   .75 INCH HAIL
06/15/03   GILLESPIE                      REPORTED BY LAW
                                          ENFORCEMENT

DC
Local storm report, Jun 15, 1:59 AM CDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
159 AM CDT SUN JUN 15 2003

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

0151 AM    TOW                       TX   1.75 INCH HAIL
06/15/03   LLANO                          REPORTED BY LAW
                                          ENFORCEMENT

DC
Local storm report, Jun 15, 2:45 AM CDT, 2 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO, TX
245 AM CDT SUN JUN 15 2003

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

0232 AM    OLD HARPER ROAD
           HARPER                    TX   1.75 INCH HAIL
06/15/03   GILLESPIE                      REPORTED BY LAW
                                          ENFORCEMENT

DC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 11:57 PM CDTSevere Thunderstorm WarningEWXGillespie, Llano63 min
Jun 15, 12:11 AM CDTFlash Flood WarningEWXGillespie, Llano2 hr
Jun 15, 12:59 AM CDTSevere Thunderstorm WarningEWXGillespie61 min
Jun 15, 1:25 AM CDTSevere Thunderstorm WarningEWXBlanco65 min
Jun 15, 1:50 AM CDTSevere Thunderstorm WarningEWXLlano55 min
Jun 15, 1:59 AM CDTSevere Thunderstorm WarningEWXGillespie46 min
Jun 15, 2:00 AM CDTSevere Thunderstorm WarningEWXKendall60 min
Jun 15, 2:08 AM CDTFlash Flood WarningEWXGillespie2 hr
Jun 15, 2:45 AM CDTSevere Thunderstorm WarningEWXKerr75 min
Jun 15, 3:04 AM CDTSevere Thunderstorm WarningEWXKendall56 min
Jun 15, 3:58 AM CDTSevere Thunderstorm WarningEWXBexar, Kendall62 min
Jun 15, 4:04 AM CDTSevere Thunderstorm WarningEWXVal Verde71 min
Jun 15, 4:26 AM CDTSevere Thunderstorm WarningEWXEdwards64 min
Jun 15, 5:05 AM CDTFlash Flood WarningEWXEdwards, Real4 hr
Jun 15, 6:10 AM CDTFlash Flood WarningEWXKinney, Uvalde3 hr
Jun 15, 8:55 AM CDTFlash Flood WarningEWXUvalde2 hr

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; radar from the NEXRAD Level II archive.