Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 137, NWS Austin/San Antonio, TX

May 12, 2000Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 12, 2000, 9:08 PM CDT for Kerr County, Texas. It was in force for 67 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 12, 2000, 9:08 PM CDT (02:08 UTC)
Expired
May 12, 2000, 10:15 PM CDT
In force
67 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Kerr County, TX

The radar

The Laughlin AFB radar (KDFX), 126 km from the middle of the area, began a volume at 02:10 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.

What was reported inside it

TimeReportWhereRemark
May 12, 9:30 PM CDTHail 1.75Ingram, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

IssuedProductOfficeLasted
May 12, 8:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.1 hours before the alert went out and 163 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 00:00Z on 2000-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1539 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 00:00Z on 2000-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.193958Sfc1 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
1539 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
3252 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

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

564 
WUUS54 KEWX 130210
SVRSAT
TXC265-130315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
908 PM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

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

* UNTIL 1015 PM CDT

* AT 908 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHEAST OF KERR WILDLIFE MGMT AREA...
  OR ABOUT 20 MILES WEST OF KERRVILLE...MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HUNT AROUND 925 PM CDT
  KERRVILLE AROUND 1000 PM CDT 

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.

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.

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 12, 2:45 PM CDT, 6 hours 23 minutes earlier.

Area forecast discussion, May 12, 2:45 PM CDT, 6 hours 23 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CDT FRI MAY 12 2000

MOST OF THE MODEL RUNS HAVE BEEN FAIRLY CONSISTENT IN BRINGING THE
COLD FRONT WHICH IS IN WEST CENTRAL TEXAS SOUTHWARD ACROSS THE AREA
AND DEVELOPING PRECIPITATION WITH THE FRONT BEGINNING EITHER LATE
THIS AFTERNOON OR THIS EVENING.  WILL KEEP THAT TREND IN CURRENT
FORECAST AND POSSIBLY RAISE POPS IN SOME AREAS.  INCREASING
MIDDLE CLOUDS OVER SOUTHWEST TEXAS INDICATES SOME LIFTING OCCURRING
AS UPPER TROUGH COMES CLOSER.

STEEP LAPSE RATE ABOVE CAP SO ANY THUNDERSTORMS COULD BECOME QUITE
STRONG.  LOW-LEVEL MOISTURE IS FAIRLY LIMITED ESPECIALLY WEST BUT
MAIN TRAJECTORIES BEHIND THE FRONT LATER TONIGHT AND SATURDAY WILL
BE FROM THE EAST WHERE MOISTURE IS BETTER.  COOLER TEMPERATURES ON
TAP FOR AREA BEHIND THE COLD FRONT AIDED BY MOSTLY CLOUDY
CONDITIONS.

COOLER AIR WILL BE DEEPER BUT BEGINNING TO SLIP TO THE EAST ON
SUNDAY AS RAIN THREATS BEGIN TO DECREASE.  A WARMER AND DRIER
PATTERN WILL SET BACK IN MONDAY THROUGH WEDNESDAY AS AN UPPER RIDGE
IS REESTABLISHED OVER THE AREA.

PRELIMINARY NUMBERS
AUS 68/80/60/80 4632
SAT 71/82/63/81 35g32
DRT 72/83/65/82 2321

.EWX...NONE.

16/06/20

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 7:13 PM CDTSevere Thunderstorm WarningEWXBurnet62 min
May 12, 7:28 PM CDTSevere Thunderstorm WarningEWXLlano62 min
May 12, 8:03 PM CDTSevere Thunderstorm WarningEWXGillespie57 min
May 12, 8:12 PM CDTSevere Thunderstorm WarningEWXBurnet63 min
May 12, 8:25 PM CDTSevere Thunderstorm WarningEWXLlano35 min
May 12, 8:42 PM CDTSevere Thunderstorm WarningEWXBlanco63 min
May 12, 8:46 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson59 min
May 12, 8:55 PM CDTSevere Thunderstorm WarningEWXGillespie65 min
May 12, 10:50 PM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell55 min
May 12, 10:50 PM CDTSevere Thunderstorm WarningEWXLee55 min
May 12, 11:11 PM CDTSevere Thunderstorm WarningEWXUvalde64 min
May 13, 12:56 AM CDTSevere Thunderstorm WarningEWXMaverick64 min
May 13, 1:56 AM CDTSevere Thunderstorm WarningEWXMaverick49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.