Alert archive / Texas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 49, NWS Houston/Galveston, TX

May 18, 1989Montgomery County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 18, 1989, 8:05 AM CDT for Montgomery County, Texas. It was in force for 55 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
May 18, 1989, 8:05 AM CDT (13:05 UTC)
Expired
May 18, 1989, 9:00 AM CDT
In force
55 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Montgomery 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
May 18, 8:05 AM CDTHail 1Montgomery, 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.1 hours before the alert went out and 222 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, Lake Charles Mun, LA at 12:00Z on 1989-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 1989-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.19395878Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
353 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
May 17, 7:00 PM CDTSevere Thunderstorm WarningHGXPolk60 min
May 17, 7:16 PM CDTTornado WarningHGXGrimes, Waller59 min
May 17, 7:19 PM CDTSevere Thunderstorm WarningHGXColorado56 min
May 17, 7:33 PM CDTSevere Thunderstorm WarningHGXMontgomery42 min
May 17, 7:45 PM CDTSevere Thunderstorm WarningHGXWharton60 min
May 17, 8:01 PM CDTSevere Thunderstorm WarningHGXHarris29 min
May 17, 8:10 PM CDTFlash Flood WarningHGXMontgomery, Polk, San Jacinto, Trinity, Walker4 hr
May 17, 8:11 PM CDTSevere Thunderstorm WarningHGXMontgomery64 min
May 17, 8:27 PM CDTSevere Thunderstorm WarningHGXFort Bend48 min
May 17, 8:48 PM CDTSevere Thunderstorm WarningHGXHarris57 min
May 17, 9:38 PM CDTSevere Thunderstorm WarningHGXLiberty67 min
May 17, 11:27 PM CDTFlash Flood WarningHGXHarris2 hr
May 18, 1:12 AM CDTSevere Thunderstorm WarningHGXHarris48 min
May 18, 1:35 AM CDTFlash Flood WarningHGXHarris3 hr
May 18, 1:47 AM CDTFlash Flood WarningHGXLiberty4 hr
May 18, 5:57 AM CDTFlash Flood WarningHGXLiberty2 hr
May 18, 7:25 AM CDTFlash Flood WarningHGXHarris3 hr
May 18, 7:43 AM CDTFlash Flood WarningHGXMontgomery3 hr
May 18, 7:52 AM CDTFlash Flood WarningHGXLiberty3 hr
May 18, 10:04 AM CDTFlash Flood WarningHGXHarris, Liberty, Montgomery4 hr
May 18, 10:13 AM CDTTornado WarningHGXHarris32 min
May 18, 12:39 PM CDTFlash Flood WarningHGXFort Bend2 hr
May 18, 1:58 PM CDTFlash Flood WarningHGXHarris, Liberty, Montgomery3 hr
May 18, 1:58 PM CDTFlash Flood WarningHGXFort Bend3 hr
May 18, 2:15 PM CDTSevere Thunderstorm WarningHGXHarris45 min

Nearby

Severe Thunderstorm Warnings in Texas, 1989Every severe thunderstorm warning 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.