Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 84, NWS Houston/Galveston, TX

August 4, 2002Houston County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 4, 2002, 7:05 PM CDT for Houston County, Texas. It was in force for 100 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 4, 2002, 7:05 PM CDT (00:05 UTC)
Expired
Aug 4, 2002, 8:45 PM CDT
In force
100 min
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

County Houston County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.1 hours before the alert went out and 216 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, Shreveport, LA at 00:00Z on 2002-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1396 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, Shreveport, LA at 00:00Z on 2002-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1396 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
1905 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
13 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.

813 
WUUS54 KHGX 050005
SVRHOU
TXC225-050045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
705 PM CDT SUN AUG 4 2002

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOUSTON COUNTY IN SOUTHEAST TEXAS

* UNTIL 745 PM CDT

* AT 700 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3
  MILES NORTHEAST OF WECHES...MOVING SOUTHWEST AT 10 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  WECHES

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. STAY AWAY FROM WINDOWS

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 3146 9550 3126 9531 3150 9498 3168 9518

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 Aug 4, 2:05 PM CDT, 5 hours earlier.

Area forecast discussion, Aug 4, 2:05 PM CDT, 5 hours before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
205 PM CDT SUN AUG 4 2002

LLVL CIRCULATION OFF THE SE LA COAST IS LOOKING BETTER ON SAT PIX
THIS AFTERNOON. MODELS TAKE THIS FEATURE WNW AND INTO SW LA AROUND
00Z TUE. MODELS THEN WANT TO OPEN IT UP A BIT...LEAVING A COASTAL
TROF FROM THE MID/UPPER TX COAST THROUGH MOST OF THE LA COAST FOR
THE MAJORITY OF THE UPCOMING WEEK. THIS BOUNDARY WILL BE MAINTAINED/
REINFORCED LATE IN THE WEEK BY A BACKDOOR FRONT EXPECTED TO PUSH
INTO NE TX COMBINED WITH LLVL HIGH PRES OVER THE WEST CENTRAL GULF.
ALL AND ALL IT MEANS A FAIRLY WET WEEK ACROSS SE TX...ESPECIALLY THE
SRN 1/2 OF THE AREA. ATTM IT APPEARS WED-FRI SHOULD HAVE THE MOST
PRECIP COVERAGE WITH AVN GIVING US PWS OF 2.3-2.4 DURING THAT
TIMEFRAME. SEE NO REASON TO DEVIATE FROM A PERSISTENCE FCST NEXT
WEEKEND. IF ITS NOT THE COASTAL TROF...IT APPEARS WELL STILL BE IN
THE VICINITY OF A WEAKNESS IN THE H5 FLOW GIVING US A CONTINUED
CHANCE OF RAIN.

EXPECTING ABOUT THE SAME WX MON AS WE HAVE TODAY...WILL SEE WHAT
PRECIP COVERAGE LOOKS LIKE IN THE NEXT HOUR OR TWO AND STICK IN IN
FOR THE POPS TOMORROW (PRELIMS BELOW SUBJECT TO CHANGE). WILL LET
THE MIDNIGHT CREW MAKE A DECISION ON SVR POTENTIAL FOR MON - FCST
SOUNDINGS AGAIN SHOWING INVERTED V SOUNDINGS FOR THE 3RD DAY IN A
ROW BUT DONT WANT TO LOCK THEM IN TOO SOON. WILL INCREASE POPS
TUE-FRI AS BETTER MOISTURE MAKES IT IN.

.HGX...NONE

47/43

PRELIMS...
CLL BB 072/097 072/096 073 332
IAH BB 072/095 073/093 073 343
GLS BB 080/090 080/089 080 343

In the hours before

Local storm report, Aug 4, 1:25 PM CDT, 5 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1225 PM CST SUN AUG 04 2002

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

0300 PM    5 E LIVINGSTON            TX   .75 INCH HAIL
08/03/02   POLK                           REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL IN
                                          CRYSTAL LAKES ESTATES.

0400 PM    PALACIOS                  TX   WIND DAMAGE
08/03/02   MATAGORDA                      POWER LINES DOWN.
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0410 PM    2 N MISSION BEND          TX   WIND DAMAGE
08/03/02   FORT BEND                      TREE DOWN AT FM1464 AND
                                          RED TIMBER

0415 PM    LOLITA                    TX   WIND DAMAGE
08/03/02   JACKSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.
                                          TREES AND POWERLINES
                                          BLOWN DOWN ACROSS
                                          SOUTHERN HALF OF THE
                                          COUNTY INCLUDING THE
                                          TOWNS OF LOLITA, EDNA,
                                          VANDERBILT. EVENT DURATION
                                          30 MINUTES.

0430 PM    7 S EDNA                  TX   WIND DAMAGE
08/03/02   JACKSON                        REPORTED BY COOPERATIVE
                                          OBSERVER. LNRA
                                          EQUIPMENT SHED WALL
                                          BLOWN OUT, ROOF CAVED
                                          IN, AND LARGE TREE
                                          LIMBS DOWN

0500 PM    HOUSTON                   TX   WIND DAMAGE
08/03/02   HARRIS                         *** 1 DEAD ***
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.
                                          MAN KILLED BY A TREE
                                          THAT FELL ON HIS CAR AT
                                       CUTTEN AND FM 1960.

0515 PM    2 E COLUMBUS              TX   WIND DAMAGE
08/03/02   COLORADO                       REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.
                                          BILLBOARD SIGN BLOWN
                                          DOWN.

0530 PM    HOUSTON                   TX   1 INCH HAIL
08/03/02   HARRIS                         REPORTED BY STORM
                                          SPOTTER AT BELTWAY 8
                                          AND MEMORIAL DR.
Special weather statement, Aug 4, 3:45 PM CDT, 3 hours 20 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-050300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
345 PM CDT SUN AUG 4 2002

THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS EVENING
ACROSS ALL OF SOUTHEAST TEXAS.

ABUNDANT TROPICAL MOISTURE COMBINED WITH AFTERNOON HEATING HAS LEAD
TO ANOTHER ROUND OF SCATTERED THUNDERSTORMS ACROSS SOUTHEAST TEXAS
THIS AFTERNOON. THESE STORMS WILL LIKELY PERSIST INTO THE EVENING
HOURS BEFORE DIMINISHING AFTER SUNSET.

THE MAIN SEVERE WEATHER THREAT WILL BE DAMAGING DOWNBURST WINDS.
DIME TO QUARTER SIZE HAIL IS ALSO A POSSIBILITY.

STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 8:03 PM CDTSevere Thunderstorm WarningHGXHouston10 days
Aug 4, 8:54 PM CDTSpecial Marine WarningHGX66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002

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.