Alert archive / Texas / Tornado Warnings in 2001

Tornado Warning 9, NWS Houston/Galveston, TX

June 8, 2001Montgomery County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Jun 8, 2001, 5:46 PM CDT for Montgomery County, Texas. It was in force for 44 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 8, 2001, 5:46 PM CDT (22:46 UTC)
Expired
Jun 8, 2001, 6:30 PM CDT
In force
44 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Montgomery County, TX

The radar

The Houston radar (KHGX), 95 km from the middle of the area, began a volume at 22:48 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, 10.8 hours before the alert went out and 223 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, Lake Charles Mun, LA at 12:00Z on 2001-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2670 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, Lake Charles Mun, LA at 12:00Z on 2001-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.1939Sfc1 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
2670 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
445 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
62 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 082247
TORHOU

TXC339-082330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
546 PM CDT FRI JUN 8 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 630 PM CDT

* AT 543 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO OVER THE WOODLANDS...MOVING NORTH AT 10 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  THE WOODLANDS...OAK RIDGE NORTH...CHATEAU WOODS
  SHENANDOAH
  WOODLOCH
  CONROE

AT 545 PM...THE HIGHWAY DEPARTMENT REPORTED A TORNADO IN A WOODED 
AREA NEAR I-45 JUST NORTH OF THE WOODLANDS.

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 3018 9562 3013 9539 3035 9539 3034 9556

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 8:02 PM CDTFlash Flood WarningHGXLiberty3 hr
Jun 7, 8:45 PM CDTFlash Flood WarningHGXHouston3 hr
Jun 7, 10:44 PM CDTFlash Flood WarningHGXWalker3 hr
Jun 7, 11:21 PM CDTFlash Flood WarningHGXHouston3 hr
Jun 7, 11:48 PM CDTFlash Flood WarningHGXLiberty3 hr
Jun 8, 1:37 AM CDTSevere Thunderstorm WarningHGXChambers38 min
Jun 8, 1:49 AM CDTFlash Flood WarningHGXLiberty4 hr
Jun 8, 2:50 AM CDTFlash Flood WarningHGXHouston, Trinity, Walker6 hr
Jun 8, 3:57 AM CDTSevere Thunderstorm WarningHGXGalveston, Harris63 min
Jun 8, 4:25 AM CDTFlash Flood WarningHGXBrazoria, Chambers, Galveston, Liberty3 hr
Jun 8, 6:41 AM CDTFlash Flood WarningHGXPolk2 hr
Jun 8, 7:15 AM CDTFlash Flood WarningHGXBrazoria3 hr
Jun 8, 7:23 AM CDTFlash Flood WarningHGXLiberty3 hr
Jun 8, 3:48 PM CDTFlash Flood WarningHGXMontgomery, Walker3 hr
Jun 8, 5:10 PM CDTFlash Flood WarningHGXHarris3 hr
Jun 8, 5:30 PM CDTFlash Flood WarningHGXBrazoria, Fort Bend3 hr
Jun 8, 6:40 PM CDTFlash Flood WarningHGXWashington3 hr
Jun 8, 6:52 PM CDTFlash Flood WarningHGXMontgomery, Walker3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.