Alert archive / Texas / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 71, NWS Houston/Galveston, TX

April 20, 1995Brazoria County, Harris County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 20, 1995, 2:40 PM CDT for Brazoria County, Harris County, Texas. It was in force for 65 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 20, 1995, 2:40 PM CDT (19:40 UTC)
Expired: Apr 20, 1995, 3:45 PM CDT
In force: 65 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

Counties Brazoria County, TX, Harris County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 20, 3:10 PM CDT	Tornado F0	Houston, TX	Ham radio and storm spotters reported a tornado in the Sage Glenn subdivision (east of downtown Houston). The tornado destroyed two garages, downed large tree limbs, and knocked down fences.
Apr 20, 3:15 PM CDT	Tornado F0	La Porte, TX	The roof of a business in La Porte was damaged by a tornado.

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.7 hours before the alert went out and 224 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: 1413 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 9.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 20, 9:43 AM CDT, 4 hours 57 minutes earlier.

Area forecast discussion, Apr 20, 9:43 AM CDT, 4 hours 57 minutes before

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In the hours before

Special weather statement, Apr 20, 10:05 AM CDT, 4 hours 35 minutes before

TXZ198-163-199-179-178-164-197-041-051-313-202200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON TX
1004 AM CDT THU APR 20 1995

NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PORTIONS OF
SOUTHEAST TEXAS FROM 945 AM THIS THURDAY MORNING UNTIL 4 PM THIS
AFTERNOON.

THE FOLLOWING COUNTIES ARE WITHIN THE WATCH AREA:  HOUSTON  TRINITY
BRAZOS  BURLESON  ROBERTSON  WASHINGTON  GRIMES  JASPER  MADISON
MONTGOMERY  NEWTON  POLK  SVAN JACINTO  TYLER AND WALKER.

REMEMBER,  A WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADO FORMATION.
PERSONS WITHIN THE WATCH AREA SHOULD REMAIN ALERT AND SEEK SHELTER IF
THREATENING WEATHER APPROACHES.

Local storm report, Apr 20, 11:07 AM CDT, 3 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON TX
1105 AM CDT THU APR 20 1995

TIME(CDT)  .....CITY LOCATION.....   STATE    ...EVENT/REMARKS...
           ....COUNTY LOCATION....

944 AM     RIVERSIDE                 TX   GOLF BALL HAIL
04/20/95   WALKER                         VIL 62

Special weather statement, Apr 20, 1:40 PM CDT, 1 hour before

TXZ163-164-176>179-195>200-210>214-226-227-238-511-513-210045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON TX
140 PM CDT THU APR 20 1995

NATIONAL WEATHER SERVICE HAS CANCELED TORNADO WATCH 232.  A NEW TORNADO
WATCH WW233 HAS BEEN ISSUED.  THE WATCH AREA INCLUDES MOST OF SOUTHEAST
TEXAS...VALID TIME IS FROM 130 PM THIS AFTERNOON UNTIL 800 PM CDT THIS
EVENING:  HOUSTON  TRINITY  AUSTIN  BRAZOS  BURLESON  COLORADO
ROBERTSON  WASHINGTON  WHARTON  BRAZORIA  CHAMBER  FORT BEND  GRIMES
HARDIN  HARRIS  JASPER  JEFFERSON  LIBERTY  MADISON  MONTGOMERY  NEWTON
 ORANGE  POLK  SAN JANCINTO  TYLER  WALKER  WALLER AND ADJACENT COASTAL
WATERS OF CHAMBERS  GALVESTON AND JEFFERSON COUNTIES.

REMEMBER A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE
FORMATION OF TORNADOS.  PERSONS WITHIN THE WATCH AREA SHOULD STAY ALERT
AND SEEK IMMEDIATE SHELTER IF THREATENING WEATHER APPROACHES.

Special weather statement, Apr 20, 2:39 PM CDT, 1 minute before

TXZ199-212-202240-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON TX
239 PM CDT THU APR 20 1995

THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY AND WALLER COUNTIES HAS
EXPIRED.  THERE WERE NO REPORTS OF SEVERE WEATHER.  THE TORNADO WATCH
CONTINUES IN EFFECT FOR SOUTHEAST TEXAS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 2:07 AM CDT	Severe Thunderstorm Warning	HGX	Brazos	68 min
Apr 20, 2:43 AM CDT	Severe Thunderstorm Warning	HGX	Grimes	62 min
Apr 20, 9:37 AM CDT	Severe Thunderstorm Warning	HGX	Trinity	68 min
Apr 20, 9:37 AM CDT	Severe Thunderstorm Warning	HGX	Walker	63 min
Apr 20, 11:40 AM CDT	Severe Thunderstorm Warning	HGX	Walker	14 min
Apr 20, 1:31 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery, Waller	59 min
Apr 20, 2:45 PM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto	60 min
Apr 20, 3:07 PM CDT	Tornado Warning	HGX	Chambers, Harris	67 min
Apr 20, 3:21 PM CDT	Tornado Warning	HGX	Liberty	53 min
Apr 20, 3:36 PM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto	69 min
Apr 20, 4:36 PM CDT	Severe Thunderstorm Warning	HGX	Trinity	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 1995 Every severe thunderstorm warning in 1995

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.