Alert archive / Texas / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 22, NWS Austin/San Antonio, TX

April 5, 1991Calhoun County, Jackson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 5, 1991, 7:27 AM CST for Calhoun County, Jackson County, Texas. It was in force for 63 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
Apr 5, 1991, 7:27 AM CST (13:27 UTC)
Expired
Apr 5, 1991, 8:30 AM CST
In force
63 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Calhoun County, TX, Jackson County, TX

What was reported inside it

TimeReportWhereRemark
Apr 5, 7:30 AM CSTThunderstorm Wind 0Calhoun, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 1.5 hours before the alert went out and 130 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 1991-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 999 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 1991-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
999 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
699 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.9

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

IssuedProductOfficeCountiesLasted
Apr 5, 4:20 AM CSTFlash Flood WarningEWXBexar3 hr
Apr 5, 5:47 AM CSTFlash Flood WarningEWXVictoria118 min
Apr 5, 6:27 AM CSTSevere Thunderstorm WarningEWXJackson, Victoria63 min
Apr 5, 7:02 AM CSTFlash Flood WarningEWXBexar3 hr
Apr 5, 7:38 AM CSTFlash Flood WarningEWXVictoria3 hr
Apr 5, 8:29 AM CSTFlash Flood WarningEWXCalhoun3 hr
Apr 5, 10:29 AM CSTFlash Flood WarningEWXVictoria2 hr
Apr 5, 11:29 AM CSTFlash Flood WarningEWXCalhoun2 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.