Alert archive / Texas / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 20, NWS Brownsville, TX

May 5, 1991Hidalgo County, Starr County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 5, 1991, 8:22 AM CDT for Hidalgo County, Starr County, Texas. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 5, 1991, 8:22 AM CDT (13:22 UTC)
Expired
May 5, 1991, 9:30 AM CDT
In force
68 min
Issued by
NWS Brownsville, TX
Area
Whole counties

Counties Hidalgo County, TX, Starr County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 1.4 hours before the alert went out and 178 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 12:00Z on 1991-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2243 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 12:00Z on 1991-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.19395878Sfc1 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
2243 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1446 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 11:07 PM CDTSevere Thunderstorm WarningBROHidalgo38 min
May 4, 11:32 PM CDTTornado WarningBROHidalgo28 min
May 5, 1:25 AM CDTSevere Thunderstorm WarningBROJim Hogg65 min
May 5, 2:31 AM CDTTornado WarningBROBrooks, Jim Hogg59 min
May 5, 2:59 AM CDTSevere Thunderstorm WarningBROStarr61 min
May 5, 4:10 AM CDTSevere Thunderstorm WarningBROHidalgo, Starr65 min
May 5, 7:59 AM CDTSevere Thunderstorm WarningBROHidalgo61 min
May 5, 9:28 AM CDTSevere Thunderstorm WarningBROHidalgo62 min
May 5, 10:45 AM CDTSevere Thunderstorm WarningBROHidalgo60 min

Nearby

Severe Thunderstorm Warnings in Texas, 1991Every severe thunderstorm warning in 1991

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.