Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 41, NWS Corpus Christi, TX

May 18, 1999Duval County, Webb County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 18, 1999, 3:13 AM CDT for Duval County, Webb County, Texas. It was in force for 47 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 18, 1999, 3:13 AM CDT (08:13 UTC)
Expired
May 18, 1999, 4:00 AM CDT
In force
47 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Duval County, TX, Webb County, TX

What was reported inside it

TimeReportWhereRemark
May 18, 3:30 AM CDTThunderstorm Wind 50Laredo, TX60 mph thunderstorm wind gust destroyed a storage building.

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 18, 1:00 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 8.2 hours before the alert went out and 156 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 1999-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3161 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 1999-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
3161 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
707 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.3

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.

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 12:15 AM CDTSevere Thunderstorm WarningCRPGoliad, Victoria60 min
May 18, 1:12 AM CDTSevere Thunderstorm WarningCRPLa Salle, McMullen63 min
May 18, 1:25 AM CDTSevere Thunderstorm WarningCRPAransas, Calhoun, Refugio65 min
May 18, 1:25 AM CDTSevere Thunderstorm WarningCRPBee, Goliad, Victoria65 min
May 18, 1:55 AM CDTSevere Thunderstorm WarningCRPJim Wells, Nueces, San Patricio65 min
May 18, 2:05 AM CDTSevere Thunderstorm WarningCRPDuval, Webb55 min
May 18, 2:35 AM CDTSevere Thunderstorm WarningCRPAransas, Refugio30 min
May 18, 2:50 AM CDTSevere Thunderstorm WarningCRPKleberg55 min
May 18, 3:03 AM CDTSevere Thunderstorm WarningCRPJim Wells, Nueces57 min
May 18, 3:03 AM CDTSevere Thunderstorm WarningCRPAransas57 min
May 18, 3:46 AM CDTSevere Thunderstorm WarningCRPKleberg59 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.