Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 28, NWS Houston/Galveston, TX

October 13, 2001Houston County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Oct 13, 2001, 2:02 AM CDT for Houston County, Texas. It was in force for 43 min. 1 report came from 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, with what was reported inside it.

The facts

Issued
Oct 13, 2001, 2:02 AM CDT (07:02 UTC)
Expired
Oct 13, 2001, 2:45 AM CDT
In force
43 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Houston County, TX

What was reported inside it

TimeReportWhereRemark
Oct 13, 2:20 AM CDTThunderstorm WindGrapeland, TXSheriff's office reported trees and power lines down.

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 13, 12:30 AM CDTTornado WatchSPC5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 7.0 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, Shreveport, LA at 00:00Z on 2001-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1857 joules per kilogram.LCLEL10008507005003002001001 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, Shreveport, LA at 00:00Z on 2001-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.1939587897Sfc1 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
1857 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.5

Open this sounding in Storm Lab

The text

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

451 
WFUS54 KHGX 130704
TORHOU
TXC225-130745-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
202 AM CDT SAT OCT 13 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  HOUSTON COUNTY IN SOUTHEAST TEXAS

* UNTIL 245 AM CDT

* AT 200 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 16 MILES WEST OF GRAPELAND...MOVING NORTHEAST
  AT 20 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  GRAPELAND
  RURAL PORTIONS OF NORTHWEST HOUSTON COUNTY
  FM 2544

MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR
OR MOBILE HOME FOR A STRONG SHELTER NOW

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 3143 9588 3130 9573 3158 9518 3178 9552

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 7:53 PM CDTSevere Thunderstorm WarningHGXPolk, San Jacinto52 min
Oct 13, 12:18 AM CDTSevere Thunderstorm WarningHGXBurleson57 min
Oct 13, 12:36 AM CDTSevere Thunderstorm WarningHGXBrazos, Washington54 min
Oct 13, 1:04 AM CDTSevere Thunderstorm WarningHGXGrimes, Madison56 min
Oct 13, 1:13 AM CDTSevere Thunderstorm WarningHGXAustin62 min
Oct 13, 1:23 AM CDTSevere Thunderstorm WarningHGXHarris, Waller67 min
Oct 13, 1:50 AM CDTSevere Thunderstorm WarningHGXMontgomery, Walker55 min
Oct 13, 1:55 AM CDTSevere Thunderstorm WarningHGXHouston50 min
Oct 13, 2:12 AM CDTSevere Thunderstorm WarningHGXPolk, San Jacinto, Trinity63 min
Oct 13, 2:20 AM CDTSevere Thunderstorm WarningHGXAustin25 min
Oct 13, 2:27 AM CDTSevere Thunderstorm WarningHGXHarris63 min
Oct 13, 2:34 AM CDTTornado WarningHGXPolk41 min
Oct 13, 2:47 AM CDTSevere Thunderstorm WarningHGXMontgomery43 min
Oct 13, 2:58 AM CDTTornado WarningHGXTrinity47 min
Oct 13, 3:14 AM CDTSevere Thunderstorm WarningHGXPolk61 min
Oct 13, 3:24 AM CDTTornado WarningHGXLiberty51 min
Oct 13, 4:02 AM CDTSpecial Marine WarningHGX88 min
Oct 13, 4:16 AM CDTSevere Thunderstorm WarningHGXChambers, Liberty44 min
Oct 13, 5:20 AM CDTSpecial Marine WarningHGX115 min
Oct 13, 5:20 AM CDTSpecial Marine WarningHGX115 min

Nearby

Tornado Warnings in Texas, 2001Every tornado warning in 2001Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.