Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 30, NWS Austin/San Antonio, TX

March 12, 1999Uvalde County, Zavala County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 12, 1999, 8:07 PM CST for Uvalde County, Zavala County, Texas. It was in force for 63 min. 2 reports 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
Mar 12, 1999, 8:07 PM CST (02:07 UTC)
Expired
Mar 12, 1999, 9:10 PM CST
In force
63 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Uvalde County, TX, Zavala County, TX

What was reported inside it

TimeReportWhereRemark
Mar 12, 8:30 PM CSTHail 1La Pryor, TXHail broke windows in the town of LaPryor.
Mar 12, 9:05 PM CSTHail 0.88Crystal City, 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
Mar 12, 3:45 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.1 hours before the alert went out and 109 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 1999-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 741 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, Del Rio, TX at 00:00Z on 1999-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 square meters per square second.1939587897Sfc1 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
741 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
1309 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
473 m²/s²
Significant tornado parameter
0.6
Supercell composite
11.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, Mar 12, 5:33 PM CST, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
533 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    LLANO                     TX   1.75 INCH HAIL
03/12/99   2 NE TOW                       SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
           BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
           UVALDE                         DPS REPORT
Local storm report, Mar 12, 5:50 PM CST, 2 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
550 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    2NE TOW                   TX   1.75 INCH HAIL
03/12/99   LLANO                           SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
03/12/99   BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
03/12/99   UVALDE                         DPS REPORT

0530 PM    UVALDE                    TX    .75 INCH HAIL
03/12/99   UVALDE                          PD REPORT
Local storm report, Mar 12, 5:50 PM CST, 2 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
550 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    2NE TOW                   TX   1.75 INCH HAIL
03/12/99   LLANO                           SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
03/12/99   BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
03/12/99   UVALDE                         DPS REPORT

0530 PM    UVALDE                    TX    .75 INCH HAIL
03/12/99   UVALDE                          PD REPORT
Local storm report, Mar 12, 6:10 PM CST, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    2NE TOW                   TX   1.75 INCH HAIL
03/12/99   LLANO                           SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
03/12/99   BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
03/12/99   UVALDE                         DPS REPORT

0530 PM    UVALDE                    TX    .75 INCH HAIL
03/12/99   UVALDE                          PD REPORT

0540 PM    MARBLE FALLS              TX    TORNADO ON GROUND
03/12/99   BURNET                          REPORTED BY HAMS

0557 PM    MARBLE FALLS              TX    2.75 HAIL
03/12/99   BURNET                          REPORTED BY SPOTTER

0602 PM    LAGO VISTA                TX    1.75 HAIL
03/12/99   TRAVIS                          REPORTED BY HAMS

0602 PM    SPICEWOOD                 TX    1.75 HAIL
03/12/99   BURNET                          REPORTED BY HAMS
Local storm report, Mar 12, 6:10 PM CST, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    2NE TOW                   TX   1.75 INCH HAIL
03/12/99   LLANO                           SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
03/12/99   BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
03/12/99   UVALDE                         DPS REPORT

0530 PM    UVALDE                    TX    .75 INCH HAIL
03/12/99   UVALDE                          PD REPORT

0540 PM    MARBLE FALLS              TX    TORNADO ON GROUND
03/12/99   BURNET                          REPORTED BY HAMS

0557 PM    MARBLE FALLS              TX    2.75 HAIL
03/12/99   BURNET                          REPORTED BY SPOTTER

0602 PM    LAGO VISTA                TX    1.75 HAIL
03/12/99   TRAVIS                          REPORTED BY HAMS

0602 PM    SPICEWOOD                 TX    1.75 HAIL
03/12/99   BURNET                          REPORTED BY HAMS
Local storm report, Mar 12, 6:58 PM CST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 PM CST FRI MAR 12 1999

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

0200 PM    LOMA ALTA                 TX   1.75 INCH HAIL
03/12/99   VAL VERDE                      SHERIFF REPORT
                                          LASTED 20 MINUTES

0410 PM    2NE TOW                   TX   1.75 INCH HAIL
03/12/99   LLANO                           SHERIFF REPORT

0515 PM    MARBLE FALLS              TX   1.75 INCH HAIL
03/12/99   BURNET                         PD REPORT

0530 PM    KNIPPA                    TX   1.75 INCH HAIL
03/12/99   UVALDE                         DPS REPORT
0530 PM    UVALDE                    TX    .75 INCH HAIL
03/12/99   UVALDE                          PD REPORT

0540 PM    MARBLE FALLS              TX    TORNADO ON GROUND
03/12/99   BURNET                          REPORTED BY HAMS

0557 PM    MARBLE FALLS              TX    2.75 HAIL
03/12/99   BURNET                          REPORTED BY SPOTTER

0602 PM    LAGO VISTA                TX    1.75 HAIL
03/12/99   TRAVIS                          REPORTED BY HAMS

0602 PM    SPICEWOOD                 TX    1.75 HAIL
03/12/99   BURNET                          REPORTED BY HAMS

0620 PM    CEDAR PARK                TX    1.50 HAIL
03/12/99   WILLIAMSON                      REPORTED BY MEDIA

0625 PM    CEDAR PARK 620/.183        TX    1.75 HAIL
03/12/99   WILLIAMSON                      REPORTED BY SPOTTER

0831 PM    BATESVILLE 4E             TX    1.75 HAIL
03/12/99   ZAVALA                          REPORTED BY COOP OBSVR

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 6:13 PM CSTTornado WarningEWXTravis, Williamson57 min
Mar 12, 6:32 PM CSTSevere Thunderstorm WarningEWXFrio, Medina, Zavala58 min
Mar 12, 6:45 PM CSTTornado WarningEWXFrio60 min
Mar 12, 7:04 PM CSTSevere Thunderstorm WarningEWXBastrop, Travis61 min
Mar 12, 7:48 PM CSTSevere Thunderstorm WarningEWXAtascosa, Frio62 min
Mar 12, 8:01 PM CSTSevere Thunderstorm WarningEWXLee64 min
Mar 12, 8:21 PM CSTSevere Thunderstorm WarningEWXKinney64 min
Mar 12, 8:44 PM CSTSevere Thunderstorm WarningEWXBandera, Kerr61 min
Mar 12, 8:49 PM CSTSevere Thunderstorm WarningEWXGillespie46 min
Mar 12, 9:08 PM CSTSevere Thunderstorm WarningEWXFrio, Medina, Zavala62 min
Mar 12, 10:08 PM CSTSevere Thunderstorm WarningEWXDimmit, Frio62 min
Mar 12, 10:39 PM CSTSevere Thunderstorm WarningEWXMaverick66 min
Mar 12, 11:10 PM CSTSevere Thunderstorm WarningEWXDimmit30 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999

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.