Alert archive / Texas / Tornado Warnings in 2000

Tornado Warning 30, NWS Houston/Galveston, TX

November 12, 2000Waller County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Nov 12, 2000, 3:49 PM CST for Waller County, Texas. It was in force for 56 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: Nov 12, 2000, 3:49 PM CST (21:49 UTC)
Expired: Nov 12, 2000, 4:45 PM CST
In force: 56 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Waller County, TX

The radar

The Houston radar (KHGX), 116 km from the middle of the area, began a volume at 21:48 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 watch it was issued in

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

Issued	Product	Office	Lasted
Nov 12, 1:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.8 hours before the alert went out and 275 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 70 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 122150
TORHOU

TXC473-122245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
349 PM CST SUN NOV 12 2000

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

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

* UNTIL 445 PM CST

* AT 349 PM CST...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 10 MILES SOUTHWEST OF HEMPSTEAD...MOVING EAST
  AT 25 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  HEMPSTEAD
  PINE ISLAND
  PRAIRIE VIEW

TREES WERE BLOWN DOWN AND HAIL WAS REPORTED WITH THIS STORM AS IT
MOVED OVER BELLVILLE.

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 3013 9616 2995 9608 2998 9592 3019 9598

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 1:10 PM CST	Tornado Warning	HGX	Austin, Colorado	65 min
Nov 12, 1:42 PM CST	Tornado Warning	HGX	Colorado, Jackson, Wharton	63 min
Nov 12, 2:52 PM CST	Severe Thunderstorm Warning	HGX	Austin, Colorado, Washington	53 min
Nov 12, 3:09 PM CST	Tornado Warning	HGX	Austin, Colorado, Washington	36 min
Nov 12, 3:41 PM CST	Tornado Warning	HGX	Austin, Colorado	49 min
Nov 12, 4:11 PM CST	Tornado Warning	HGX	Colorado	49 min
Nov 12, 4:11 PM CST	Tornado Warning	HGX	Harris, Montgomery	64 min
Nov 12, 4:25 PM CST	Tornado Warning	HGX	Austin	35 min
Nov 12, 4:57 PM CST	Tornado Warning	HGX	Colorado	33 min
Nov 12, 5:12 PM CST	Tornado Warning	HGX	Waller	48 min
Nov 12, 5:29 PM CST	Severe Thunderstorm Warning	HGX	Austin, Colorado, Wharton	31 min

Nearby

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