Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 7, NWS Houston/Galveston, TX

June 5, 2001Brazoria County, Fort Bend County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Jun 5, 2001, 5:32 PM CDT for Brazoria County, Fort Bend County, Texas. It was in force for 28 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: Jun 5, 2001, 5:32 PM CDT (22:32 UTC)
Expired: Jun 5, 2001, 6:00 PM CDT
In force: 28 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Brazoria County, TX, Fort Bend County, TX

The radar

The Houston radar (KHGX), 33 km from the middle of the area, began a volume at 22:34 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.5 hours before the alert went out and 227 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: 1639 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: -34 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.

000 
WFUS54 KHGX 052233
TORHOU
TXC039-157-052300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
532 PM CDT TUE JUN 5 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 529 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 5 MILES WEST OF ALVIN...MOVING WEST AT 20 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  MANVEL
  IOWA COLONY
  JULIFF...ARCOLA...FRESNO
  THOMPSONS

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 2932 9525 2950 9524 2964 9563 2939 9570

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jun 5, 2:45 PM CDT, 2 hours 47 minutes earlier.

Area forecast discussion, Jun 5, 2:45 PM CDT, 2 hours 47 minutes before

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
245 PM CDT TUE JUN 5 2001

THE TROPICAL SEASON IS UNDERWAY...AND WE HAVE THE MISFORTUNE OF
HAVING TO DEAL WITH THE FIRST ONE...ALLISON. HPC GUIDANCE TAKES THE
SYSTEM INLAND ACRS OUR SE COAST THIS EVENING. MAX WINDS AT PRESENT
50G60KT. QPF AMTS 5 INCHES PLUS AHD OF STORM. WON'T GO ON FOR PAGES
DISCUSSING PARTICULARS...SEE LATEST HPC GUIDANCE AND OUR HLS'S.

BEHIND ALLISON...AIRMASS REMAINS VERY MOIST. A LTL HEATING ON AN
ATMOSPHERE WITH PW VALUES AOA 2" SHD LEAD TO MORE CONVECTION TMRW
INTO TMRW NGT. WILL BE USING HIGH POPS RANGING FROM 50 NW TO CAT SE.
MOISTURE REMAINS NEARLY AS HIGH INTO THU. ETA SHOWS SOME IMPRESSIVE
UVV VALUES SRN ZONES. SO ANOTHER ROUND OF TSTMS LOOKS QUITE POSSIBLE
THU.

EFP LEFT UNCHANGED. MRF SHOWS LOWER MOISTURE LVLS BUT STILL ENOUGH
FOR ISOLD CONVECTION EACH DAY. RDG A LTL TOO FAR WEST FOR HIGH
CONFIDENCE THAT CAP WILL KEEP US COMPLETELY DRY EACH DAY.

.KHGX...FLASH FLOOD WATCH THRU WED ALONG AND E OF A LINE FROM
        NORMANGEE TO SWEENY.

        TROPICAL STORM WARNING SARGENT EWD.

        HIGH WIND WARNING MONTGOMERY...POLK...SAN JACINTO CO
        TNGT.

PRELIMS...
CLL TT 071/085 071/085 071 566
IAH TT 073/085 073/085 073 887
GLS TT 075/083 075/083 076 887

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 4:38 PM CDT	Flash Flood Warning	HGX	Galveston, Harris	3 hr
Jun 5, 5:57 PM CDT	Flash Flood Warning	HGX	Brazoria	3 hr
Jun 5, 6:15 PM CDT	Tornado Warning	HGX	Brazoria, Fort Bend	30 min

Nearby

Tornado Warnings in Texas, 2001 Every tornado warning in 2001 Tornadoes 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; radar from the NEXRAD Level II archive.