Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 201, NWS Houston/Galveston, TX

August 29, 1998Walker County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 29, 1998, 5:10 PM CDT for Walker County, Texas. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 29, 1998, 5:10 PM CDT (22:10 UTC)
Expired
Aug 29, 1998, 6:10 PM CDT
In force
60 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Walker County, TX

The radar

The Houston radar (KHGX), 149 km from the middle of the area, began a volume at 22:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.2 hours before the alert went out and 284 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, Fort Worth, TX at 12:00Z on 1998-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 402 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, Fort Worth, TX at 12:00Z on 1998-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
402 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1923 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
-11 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 29, 3:58 PM CDTSevere Thunderstorm WarningHGXLiberty62 min
Aug 29, 4:08 PM CDTSevere Thunderstorm WarningHGXGrimes62 min
Aug 29, 4:19 PM CDTSevere Thunderstorm WarningHGXPolk56 min
Aug 29, 5:27 PM CDTSevere Thunderstorm WarningHGXMontgomery58 min
Aug 29, 5:27 PM CDTSevere Thunderstorm WarningHGXHouston58 min
Aug 29, 5:39 PM CDTSevere Thunderstorm WarningHGXGrimes61 min
Aug 29, 5:51 PM CDTSevere Thunderstorm WarningHGXMadison64 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.