Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 55, NWS Austin/San Antonio, TX

May 6, 2003Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 6, 2003, 11:46 AM CDT for Kerr County, Texas. It was in force for 59 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: May 6, 2003, 11:46 AM CDT (16:46 UTC)
Expired: May 6, 2003, 12:45 PM CDT
In force: 59 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Kerr 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, 4.8 hours before the alert went out and 147 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: 5257 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 4.7
Supercell composite: 20.1

Open this sounding in Storm Lab

The text

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

608 
WUUS54 KEWX 061646
SVRSAT
TXC265-061745-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1146 AM CDT TUE MAY 6 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 1245 PM CDT

* AT 1146 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER KERR COUNTY...OR ABOUT 35 MILES WEST OF
  KERRVILLE...MOVING EAST AT 30 MPH.

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.


LAT...LON 3028 9974 3028 9957 3016 9975

$$

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 May 6, 9:50 AM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, May 6, 9:50 AM CDT, 1 hour 56 minutes before

SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
950 AM CDT TUE MAY 6 2003

JUST UPDATED EVERYTHING FOR SEVERE THUNDERSTORM WATCH 266. ALTHOUGH
SEVERE STORMS ARE POSSIBLE THIS MORNING...FEEL THE MAIN THREAT WILL
BE FROM 2 TO 6 PM THIS AFTERNOON AS STRONG SFC HEATING AND OUTFLOW
BOUNDARIES FROM THIS MORNINGS STORMS PRODUCE NEW CONVECTION. THE
MAIN THREAT AREA IS ALONG AND NORTH OF TX 71...FROM LLANO TO AUSTIN
TO LA GRANGE. WILL DO ANOTHER GRID AND ZONE UPDATE AROUND NOON.

.EWX...NONE.

26/02/PM

UPDATE PRELIMS...
AUS 093/074 093/074 092 51000
DRT 102/074 099/075 100 00000
SAT 094/075 092/075 092 10000

Hazardous weather outlook, May 6, 9:10 AM CDT, 2 hours 36 minutes before

TXZ171>173-183>194-202>209-217>225-228-071100-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
910 AM CDT TUE MAY 6 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY
SEVERE THUNDERSTORMS ARE POSSIBLE TODAY OVER THE NORTHEASTERN HALF
OF SOUTH CENTRAL TEXAS...PRIMARILY NORTH AND EAST OF INTERSTATE 10.
THE MAIN SEVERE THREAT WILL BE LARGE HAIL...ALTHOUGH DAMAGING WINDS
ARE POSSIBLE. THERE IS LITTLE OR NO RISK FOR TORNADOES. THE MAIN
SEVERE THREAT TIME WILL BE FROM 2 TO 6 PM...ALTHOUGH SEVERE STORMS
ARE POSSIBLE FROM MID-MORNING INTO EARLY EVENING.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STATIONARY SPOTTERS WILL BE HELPFUL FOR WIND AND HAIL REPORTS.
HOWEVER...SPOTTERS AND HAM RADIO OPERATORS SHOULD CONTINUE WITH
NORMAL ACTIVITIES BUT PAY CLOSE ATTENTION TO CONDITIONS.

In the hours before

Special weather statement, May 6, 7:20 AM CDT, 4 hours 26 minutes before

TXZ171>173-186>194-205>209-220>225-061400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
720 AM CDT TUE MAY 6 2003

...SCATTERED SHOWERS AND THUNDERSTORMS OVER THE EASTERN
HILL COUNTRY MOVING NORTHEAST TO PARTS OF CENTRAL TEXAS...

SCATTERED SHOWERS AND THUNDERSTORMS HAVE FORMED OVER THE
EASTERN HILL COUNTRY...MOVING NORTHEAST AT 35 MPH.
THESE SHOWERS AND THUNDERSTORMS WILL AFFECT PARTS OF THE
EASTERN HILL COUNTRY AND ADJACENT PARTS OF CENTRAL TEXAS
IN THE NEXT 1 TO 2 HOURS.  THE SHOWERS AND THUNDERSTORMS
WERE MOVING TOWARD PARTS OF LLANO...BURNET...WESTERN HAYS...
WESTERN TRAVIS...AND WILLIAMSON COUNTIES.  SOME HAIL...OCCASIONAL
LIGHTNING...AND GUSTY WIND IS POSSIBLE WITH THE STRONGER
THUNDERSTORMS.

FURTHER SOUTH FROM NEAR SAN ANTONIO TO NEAR SEGUIN AND SCHULENBURG
ISOLATED SHOWERS ARE POSSIBLE IN THE NEXT 1 TO 2 HOURS.

Special weather statement, May 6, 9:25 AM CDT, 2 hours 21 minutes before

TXZ171>173-188-190-192>194-062000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
925 AM CDT TUE MAY 6 2003

...SEVERE THUNDERSTORM WATCH 266 IN EFFECT FOR NORTHERN PORTIONS OF
SOUTH CENTRAL TEXAS UNTIL 3 PM...

THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR PORTIONS OF SOUTH CENTRAL TEXAS FROM 910 AM UNTIL 3 PM TODAY.
COUNTIES INCLUDED IN THE SEVERE THUNDERSTORM WATCH INCLUDE...
BASTROP...BLANCO...BURNET...GILLESPIE...LEE...LLANO...TRAVIS...AND
WILLIAMSON.

RESIDENTS SHOULD RAISE THEIR LEVEL OF AWARENESS FOR SEVERE
THUNDERSTORMS TODAY. HAVE A NOAA WEATHER RADIO HANDY OR STAY TUNED
TO LOCAL TV AND RADIO STATIONS FOR THE LATEST FORECASTS...
STATEMENTS...AND POSSIBLE WARNINGS.

26/JWZ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:27 AM CDT	Severe Thunderstorm Warning	EWX	Blanco, Kendall	63 min
May 6, 1:21 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Real	54 min
May 6, 2:28 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee	62 min
May 6, 3:34 PM CDT	Severe Thunderstorm Warning	EWX	Fayette	56 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.