Alert archive / Texas / Tornado Warnings in 2000

Tornado Warning 22, NWS Houston/Galveston, TX

May 20, 2000Chambers County, Galveston County, Texas

NWS Houston/Galveston, TX issued this tornado warning at May 20, 2000, 2:22 AM CDT for Chambers County, Galveston County, Texas. It was in force for 38 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
May 20, 2000, 2:22 AM CDT (07:22 UTC)
Expired
May 20, 2000, 3:00 AM CDT
In force
38 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Chambers County, TX, Galveston County, TX

The radar

The Houston radar (KHGX), 64 km from the middle of the area, began a volume at 07:25 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 00:00Z, 7.4 hours before the alert went out and 132 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 00:00Z on 2000-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 701 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2000-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.19395878Sfc1 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
701 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.7

Open this sounding in Storm Lab

The text

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

427 
WFUS54 KHGX 200723
TORHOU
TXC071-167-200800-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
222 AM CDT SAT MAY 20 2000

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTHEAST GALVESTON COUNTY
  SOUTHERN CHAMBERS COUNTY

* UNTIL 300 AM CDT

* AT 219 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 5 MILES NORTH OF GILCHRIST...MOVING NORTHEAST
  AT 25 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  HIGH ISLAND
  STOWELL...WINNIE

THIS IS A DANGEROUS SITUATION QUICK ACTION MAY SAVE YOUR LIFE. MOVE
TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR OR
MOBILE HOME NOW FOR A STRONG SHELTER. IF SHELTER IS NOT AVAILABLE...
MOVE TO A DITCH OR CULVERT AND COVER YOUR HEAD.

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 2964 9462 2948 9454 2961 9412 2984 9436

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 7:25 PM CDTSevere Thunderstorm WarningHGXHarris35 min
May 19, 8:46 PM CDTTornado WarningHGXLiberty59 min
May 19, 8:49 PM CDTFlash Flood WarningHGXHarris, Liberty116 min
May 19, 9:20 PM CDTFlash Flood WarningHGXWaller3 hr
May 19, 10:35 PM CDTFlash Flood WarningHGXHarris, Liberty, Montgomery100 min
May 19, 10:45 PM CDTTornado WarningHGXBrazoria45 min
May 19, 11:17 PM CDTSevere Thunderstorm WarningHGXLiberty43 min
May 19, 11:25 PM CDTTornado WarningHGXBrazoria50 min
May 19, 11:30 PM CDTTornado WarningHGXLiberty30 min
May 19, 11:33 PM CDTFlash Flood WarningHGXBrazoria3 hr
May 20, 12:00 AM CDTFlash Flood WarningHGXBrazoria, Chambers, Fort Bend, Harris, Liberty, Waller and 1 more5 hr
May 20, 12:25 AM CDTTornado WarningHGXChambers, Liberty65 min
May 20, 2:02 AM CDTSevere Thunderstorm WarningHGXGalveston28 min
May 20, 4:59 AM CDTFlash Flood WarningHGXHarris, Liberty3 hr

Nearby

Tornado Warnings in Texas, 2000Every tornado warning in 2000Tornadoes in 2000

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.