Alert archive / Texas / Tornado Warnings in 2003

Tornado Warning 39, NWS Houston/Galveston, TX

October 9, 2003Brazoria County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Oct 9, 2003, 5:59 PM CDT for Brazoria 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 as issued.

The facts

Issued: Oct 9, 2003, 5:59 PM CDT (22:59 UTC)
Expired: Oct 9, 2003, 6:45 PM CDT
In force: 46 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Brazoria County, TX

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.0 hours before the alert went out and 218 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: 49 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KHGX 092259
TORHOU
TXC039-092345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
600 PM CDT THU OCT 9 2003

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 550 PM CDT...DOPPLER RADAR AND SPOTTER REPORTS INDICATE A       
  TORNADO 2 MILES SOUTH OF IOWA COLONY MOVING EAST AT 20 MPH. 
  DOPPLER RADAR INDICATES ANOTHER THUNDERSTORM CAPABLE OF PRODUCING 
  A TORNADO 2 MILES SOUTH OF THE INTERSECTION OF HIGHWAY 288 AND FM 518.  
  

* LOCATIONS IN THE PATH OF THE TORNADOES INCLUDE...
  SILVERLAKE SUBDIVISION 
  IOWA COLONY
  MANVEL
  BROOKSIDE VILLAGE
  PEARLAND
  ALVIN

THIS IS A DANGEROUS SITUATION. 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 2957 9542 2946 9545 2937 9541 2940 9521
          2949 9525 2955 9524 2961 9532

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 9, 11:46 AM CDT	Tornado Warning	HGX	Brazoria, Galveston, Harris	44 min
Oct 9, 1:21 PM CDT	Tornado Warning	HGX	Chambers, Liberty	39 min
Oct 9, 4:42 PM CDT	Tornado Warning	HGX	Galveston, Harris	33 min
Oct 9, 5:21 PM CDT	Tornado Warning	HGX	Brazoria, Fort Bend	39 min
Oct 9, 5:24 PM CDT	Tornado Warning	HGX	Wharton	36 min
Oct 9, 5:41 PM CDT	Tornado Warning	HGX	Harris	49 min
Oct 9, 6:25 PM CDT	Special Marine Warning	HGX		2 hr
Oct 9, 6:41 PM CDT	Tornado Warning	HGX	Brazoria, Galveston	49 min

Nearby

Tornado Warnings in Texas, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.