Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

May 12, 1990Houston County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 12, 1990, 6:47 AM CDT for Houston County, Texas. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
May 12, 1990, 6:47 AM CDT (11:47 UTC)
Expired
May 12, 1990, 7:30 AM CDT
In force
43 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Houston County, TX

The radar

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

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 00:00Z, 11.8 hours before the alert went out and 139 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, Longview/Gregg, TX at 00:00Z on 1990-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 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, Longview/Gregg, TX at 00:00Z on 1990-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 442 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
263 J/kg
Mixed-layer CIN
-331 J/kg
Mixed-layer LCL
847 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
442 m²/s²
0-3 km storm-relative helicity
773 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

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; the sounding from the Mesonet's radiosonde archive.