Alert archive / Texas / Tornado Warnings in 2002

Tornado Warning 20, NWS Houston/Galveston, TX

September 7, 2002Wharton County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Sep 7, 2002, 3:39 AM CDT for Wharton County, Texas. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 7, 2002, 3:39 AM CDT (08:39 UTC)
Expired: Sep 7, 2002, 4:15 AM CDT
In force: 36 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Wharton County, TX

The radar

The Houston radar (KHGX), 110 km from the middle of the area, began a volume at 08:38 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 watch it was issued in

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

Issued	Product	Office	Lasted
Sep 6, 11:35 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 8.7 hours before the alert went out and 221 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 408 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -26 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

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

747 
WFUS54 KHGX 070839
TORHOU
TXC481-070915-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
336 AM CDT SAT SEP 7 2002

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

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

* UNTIL 415 AM CDT

* AT 333 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 2 MILES EAST OF HUNGERFORD...MOVING NORTHWEST
  AT 25 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  HUNGERFORD
  EGYPT

FORT BEND COUNTY SHERIFFS OFFICE REPORTED A TORNADO ASSOCIATED WITH 
THIS STORM AT APPROXIMATELY 320 AM NEAR NEEDVILLE.  

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 2952 9630 2945 9634 2941 9629 2931 9601
          2942 9600 2956 9623

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 7:53 PM CDT	Flash Flood Warning	HGX	Brazoria	3 hr
Sep 6, 8:51 PM CDT	Flash Flood Warning	HGX	Galveston	3 hr
Sep 6, 10:35 PM CDT	Flash Flood Warning	HGX	Brazoria, Matagorda	3 hr
Sep 6, 11:17 PM CDT	Tornado Warning	HGX	Brazoria	43 min
Sep 7, 12:01 AM CDT	Tornado Warning	HGX	Brazoria	44 min
Sep 7, 12:17 AM CDT	Flash Flood Warning	HGX	Matagorda	3 hr
Sep 7, 12:34 AM CDT	Tornado Warning	HGX	Matagorda	41 min
Sep 7, 12:45 AM CDT	Tornado Warning	HGX	Brazoria	45 min
Sep 7, 1:39 AM CDT	Tornado Warning	HGX	Brazoria, Matagorda, Wharton	51 min
Sep 7, 2:13 AM CDT	Flash Flood Warning	HGX	Fort Bend, Wharton	3 hr
Sep 7, 2:47 AM CDT	Tornado Warning	HGX	Brazoria, Fort Bend	43 min
Sep 7, 2:56 AM CDT	Flash Flood Warning	HGX	Brazoria	2 hr
Sep 7, 4:37 AM CDT	Flash Flood Warning	HGX	Colorado	3 hr
Sep 7, 1:38 PM CDT	Flash Flood Warning	HGX	Waller, Washington	3 hr

Nearby

Tornado Warnings in Texas, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.