Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 70, NWS Houston/Galveston, TX

August 31, 1990Matagorda County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 31, 1990, 5:39 PM CDT for Matagorda County, Texas. It was in force for 66 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
Aug 31, 1990, 5:39 PM CDT (22:39 UTC)
Expired
Aug 31, 1990, 6:45 PM CDT
In force
66 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Matagorda County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Aug 31, 6:00 PM CDTHail 1.75Matagorda, 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, 10.7 hours before the alert went out and 176 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 1990-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1758 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 1990-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.1939Sfc1 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
1758 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
904 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 31, 2:33 PM CDTSevere Thunderstorm WarningHGXPolk57 min
Aug 31, 2:54 PM CDTSevere Thunderstorm WarningHGXTrinity66 min
Aug 31, 3:15 PM CDTSevere Thunderstorm WarningHGXGalveston60 min
Aug 31, 3:30 PM CDTSevere Thunderstorm WarningHGXHarris60 min
Aug 31, 3:55 PM CDTSevere Thunderstorm WarningHGXHouston65 min
Aug 31, 4:16 PM CDTSevere Thunderstorm WarningHGXChambers59 min
Aug 31, 4:40 PM CDTSevere Thunderstorm WarningHGXBrazoria65 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990

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.