Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 39, NWS Houston/Galveston, TX

April 15, 2001Austin County, Washington County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 15, 2001, 9:29 PM CDT for Austin County, Washington County, Texas. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Apr 15, 2001, 9:29 PM CDT (02:29 UTC)
Expired
Apr 15, 2001, 10:15 PM CDT
In force
46 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Austin County, TX, Washington County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.5 hours before the alert went out and 279 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 2001-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 924 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 2001-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.19395878Sfc1 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
924 J/kg
Mixed-layer CIN
-237 J/kg
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KHGX 160230
SVRHOU
TXC015-477-160315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
929 PM CDT SUN APR 15 2001

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN SOUTHEAST TEXAS
  AUSTIN COUNTY IN SOUTHEAST TEXAS

* UNTIL 1015 PM CDT

* AT 923 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES NORTHWEST OF BURTON...MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  CARMINE
  BURTON...QUARRY
  INDUSTRY

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. STAY AWAY )FROM WINDOWS!

PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3033 9662 3022 9678 2983 9639 2997 9622

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 15, 8:43 PM CDT, 46 minutes earlier.

Area forecast discussion, Apr 15, 8:43 PM CDT, 46 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
843 PM CDT SUN APR 15 2001

CURRENT CONCERNS ARE THE TWO SEVERE STORMS MOVING SOUTHEAST ACROSS THE
NORTHWESTERN HALF OF THE FORECAST AREA.  00Z SOUNDINGS SHOW A DRY
ADIABATIC LAPSE RATE FROM THE SURFACE TO 800 MB...WATER VAPOR
INDICATES JET STREAK OVERHEAD AND SE TX IN THE DRY SLOT.   WILL UPDATE
THE FORECAST TO INCLUDE THESE POSSIBILITIES.  EXPECTING THE STORMS TO
DIMINISH A BIT LATER THIS EVENING...AND WILL ISSUE ANOTHER UPDATE
LATER THIS EVENING.

PL-40
45

.HGX...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:19 PM CDTSevere Thunderstorm WarningHGXBrazos, Grimes26 min
Apr 15, 8:07 PM CDTSevere Thunderstorm WarningHGXGrimes, Montgomery38 min
Apr 15, 8:35 PM CDTSevere Thunderstorm WarningHGXBurleson, Washington55 min
Apr 15, 8:47 PM CDTSevere Thunderstorm WarningHGXMontgomery43 min
Apr 15, 9:24 PM CDTSevere Thunderstorm WarningHGXHarris36 min
Apr 16, 1:55 PM CDTSevere Thunderstorm WarningHGXChambers50 min
Apr 16, 2:45 PM CDTSevere Thunderstorm WarningHGXChambers60 min
Apr 16, 2:51 PM CDTSevere Thunderstorm WarningHGXHarris54 min
Apr 16, 3:33 PM CDTSevere Thunderstorm WarningHGXGrimes, Washington27 min
Apr 16, 3:39 PM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend, Harris51 min
Apr 16, 3:49 PM CDTSevere Thunderstorm WarningHGXWaller56 min
Apr 16, 3:49 PM CDTTornado WarningHGXBrazoria, Fort Bend26 min
Apr 16, 4:00 PM CDTSevere Thunderstorm WarningHGXGrimes, Washington30 min
Apr 16, 4:31 PM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend44 min
Apr 16, 4:42 PM CDTSevere Thunderstorm WarningHGXHarris, Waller63 min
Apr 16, 5:15 PM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend60 min
Apr 16, 6:57 PM CDTSevere Thunderstorm WarningHGXPolk33 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.