Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Houston/Galveston, TX

March 14, 2001Harris County, Waller County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Mar 14, 2001, 2:07 PM CST for Harris County, Waller County, Texas. It was in force for 23 min. 4 reports came from 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, with what was reported inside it.

The facts

Issued: Mar 14, 2001, 2:07 PM CST (20:07 UTC)
Expired: Mar 14, 2001, 2:30 PM CST
In force: 23 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Harris County, TX, Waller County, TX

What was reported inside it

Time	Report	Where	Remark
Mar 14, 2:10 PM CST	Hail 0.75	Hempstead, TX
Mar 14, 2:15 PM CST	Hail 0.75	Sealy, TX
Mar 14, 2:20 PM CST	Thunderstorm Wind	Pattison, TX	Trailer overturned, power lines down, and roof damage two miles north of Pattison. Roofs damaged and trees down along FM 529 from Pattison to the county line.
Mar 14, 2:40 PM CST	Hail 1	Cypress, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.1 hours before the alert went out and 262 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: 2308 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 59 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 
WUUS54 KHGX 142008
SVRHOU
TXC015-201-473-142030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
207 PM CST WED MAR 14 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WALLER COUNTY IN SOUTHEAST TEXAS
  HARRIS COUNTY IN SOUTHEAST TEXAS
  AUSTIN COUNTY IN SOUTHEAST TEXAS

* UNTIL 230 PM CST

* AT 200 PM CST...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS 
  ALONG   A LINE EXTENDING FROM 5 MILES WEST OF HEMPSTEAD TO 5 MILES 
  EAST OF EAGLE LAKE...MOVING EAST AT 50 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORMS INCLUDE...
  MONAVILLE...HEMPSTEAD...SAN FELIPE...SEALY
  PINE ISLAND...PRAIRIE VIEW
  BROOKSHIRE...PATTISON...WALLER...WADSWORTH

LARGE HAIL...DAMAGING WINDS AND RAINFALL UP TO 1.5 INCHES CAN BE 
EXPECTED WITH THIS STORM. TAKE COVER IN A STRONG SHELTER UNTIL THE 
STORM PASSES.

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 3019 9613 2986 9613 2970 9626 2980 9583
          2975 9564 2995 9547 3008 9574

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 14, 2:07 PM CST	Severe Thunderstorm Warning	HGX	Austin	23 min
Mar 14, 2:28 PM CST	Tornado Warning	HGX	Harris, Waller	47 min
Mar 14, 2:36 PM CST	Severe Thunderstorm Warning	HGX	Montgomery	39 min
Mar 14, 2:59 PM CST	Tornado Warning	HGX	Harris, Liberty, Montgomery	46 min
Mar 14, 3:21 PM CST	Severe Thunderstorm Warning	HGX	Chambers	54 min
Mar 14, 3:26 PM CST	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Matagorda, Wharton	64 min
Mar 14, 3:44 PM CST	Severe Thunderstorm Warning	HGX	Harris, Liberty	61 min
Mar 14, 4:03 PM CST	Severe Thunderstorm Warning	HGX	Galveston	57 min
Mar 14, 4:26 PM CST	Severe Thunderstorm Warning	HGX	Brazoria	34 min
Mar 14, 4:32 PM CST	Severe Thunderstorm Warning	HGX	Harris	28 min
Mar 14, 4:41 PM CST	Tornado Warning	HGX	Galveston	34 min
Mar 14, 4:52 PM CST	Severe Thunderstorm Warning	HGX	Chambers	38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.