Alert archive / Texas / Tornado Warnings in 1989

Tornado Warning 12, NWS Houston/Galveston, TX

October 15, 1989Galveston County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Oct 15, 1989, 7:55 PM CDT for Galveston County, Texas. It was in force for 35 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
Oct 15, 1989, 7:55 PM CDT (00:55 UTC)
Expired
Oct 15, 1989, 8:30 PM CDT
In force
35 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Galveston 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
Oct 15, 7:55 PM CDTTornado F0Galveston, 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

Victoria Regiona, TX (KVCT), launched 00:00Z, 0.9 hours before the alert went out and 209 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, Victoria Regiona, TX at 00:00Z on 1989-10-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 429 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, Victoria Regiona, TX at 00:00Z on 1989-10-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 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
429 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1220 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
7 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
Oct 15, 8:18 PM CDTTornado WarningHGXHarris27 min
Oct 15, 8:57 PM CDTTornado WarningHGXGalveston33 min
Oct 15, 9:20 PM CDTTornado WarningHGXGalveston40 min
Oct 15, 10:06 PM CDTTornado WarningHGXHarris39 min
Oct 15, 10:24 PM CDTTornado WarningHGXChambers36 min
Oct 15, 11:55 PM CDTFlash Flood WarningHGXChambers2 hr
Oct 16, 1:54 AM CDTTornado WarningHGXPolk66 min

Nearby

Tornado Warnings in Texas, 1989Every tornado warning in 1989Tornadoes in 1989

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.