Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 162, NWS Houston/Galveston, TX

October 18, 2006Washington County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Oct 18, 2006, 10:45 PM CDT for Washington County, Texas. It was in force for 30 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
Oct 18, 2006, 10:45 PM CDT (03:45 UTC)
Expired
Oct 18, 2006, 11:15 PM CDT
In force
30 min
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

County Washington County, TX

The radar

The Ft Hood radar (KGRK), 110 km from the middle of the area, began a volume at 03:48 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

Corpus Christi, TX (KCRP), launched 00:00Z, 3.8 hours before the alert went out and 291 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 00:00Z on 2006-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3453 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 00:00Z on 2006-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 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
3453 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
689 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.6

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 8:00 PM CDTFlash Flood WarningHGXLiberty3 hr
Oct 18, 9:38 PM CDTSevere Thunderstorm WarningHGXBurleson, Washington67 min
Oct 18, 10:20 PM CDTSevere Thunderstorm WarningHGXGrimes55 min
Oct 18, 10:33 PM CDTSevere Thunderstorm WarningHGXBrazos27 min
Oct 18, 10:57 PM CDTFlash Flood WarningHGXLiberty2 hr
Oct 18, 11:19 PM CDTFlash Flood WarningHGXGrimes, Walker116 min
Oct 19, 12:20 AM CDTFlash Flood WarningHGXMontgomery, Polk, San Jacinto115 min
Oct 19, 1:00 AM CDTFlash Flood WarningHGXLiberty3 hr
Oct 19, 1:15 AM CDTFlash Flood WarningHGXGrimes, Walker2 hr
Oct 19, 2:10 AM CDTFlash Flood WarningHGXPolk, San Jacinto110 min
Oct 19, 4:08 AM CDTFlash Flood WarningHGXLiberty, Polk, San Jacinto112 min

Nearby

Severe Thunderstorm Warnings in Texas, 2006Every severe thunderstorm warning in 2006

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.