Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 88, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 16, 2002, 6:05 PM CDT for Houston County, Texas. It was in force for 3 days. 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 16, 2002, 6:05 PM CDT (23:05 UTC)
- Expired
- Aug 19, 2002, 6:15 PM CDT
- In force
- 3 days
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
County Houston County, TX
The radar
The Houston radar (KHGX), 166 km from the middle of the area, began a volume at 23:07 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.
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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.1 hours before the alert went out and 183 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.
- Mixed-layer CAPE
- 2544 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 649 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
025 WUUS54 KHGX 162305 SVRHOU TXC225-162330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 605 PM CDT FRI AUG 16 2002 THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HOUSTON COUNTY IN SOUTHEAST TEXAS * UNTIL 630 PM CDT * AT 557 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER LATEXO...MOVING NORTHEAST AT 25 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... GRAPELAND PERCILLA HOUSTON COUNTY LAKE STRONG WINDS IN EXCESS OF 55 MPH MAY KNOCK DOWN TREES AND POWER LINES OR DAMAGE BUILDINGS. TAKE COVER NOW 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 3134 9561 3126 9542 3156 9511 3175 9554
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 16, 2:15 PM CDT, 3 hours 50 minutes earlier.
Area forecast discussion, Aug 16, 2:15 PM CDT, 3 hours 50 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...CORRECTION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 215 PM CDT FRI AUG 16 2002 MUCH QUIETER THIS AFTN THAN YESTERDAY. CONVECTION SO FAR HAS BEEN ISOLD TO SCT IN NATURE AND RAINFALL NOT NEARLY AS IMPRESSIVE AS YESTERDAY. EXPECT ACTIVITY TO WANE WITH LOSS OF DAYTIME HEATING. WILL NOT REISSUE FFA. WILL CHECK RADAR COVERAGE PRIOR TO ZFP ISSUANCE...BUT AM PLANNING ON A 20 POP FIRST PERIOD ATTM. AVN STILL SHOWS PW VALUES IN THE 2 RANGE ERN ZONES TMRW WITH WEAKENING H5 TROF STILL IN PLACE. INSTABILITY REMAINS DECENT. SHOULD GET ANOTHER ROUND OF SHRA/TSRA WITH BEST COVERAGE SE HALF. WILL USE 30 POPS E AND 20 W. H5 TROF WEAKENS FURTHER ON SUN...BUT MOISTURE AND INSTAB LOOK SUFFICIENT TO WARRANT SIMILAR POPS. WILL KEEP SLGT CHCS GOING MON AND BEYOND FOR NOW. AVN DOES SHOW AN H5 INVERTED TROF W OF CWA MON...AND A BIT OF A MOISTURE INCR BY WED. WONT BITE ON THIS YET BUT LATER SHIFTS MAY HAVE TO UP POPS INTO CHC RANGE IF THIS TREND CONTS. 46/35/WT .HGX...SCEC GULF WATERS 20-60 NM. PRELIMS... CLL BB 076/095 076/096 076 221 IAH BB 076/094 076/095 076 231 GLS BB 081/090 081/090 081 231 CORRECTION MADE TO ADVISORY SECTION
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 7:49 PM CDT | Flash Flood Warning | HGX | Brazoria, Galveston | 71 min |
| Aug 16, 6:45 AM CDT | Special Marine Warning | HGX | 60 min | |
| Aug 16, 7:41 AM CDT | Flash Flood Warning | HGX | Chambers, Liberty | 3 hr |
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; radar from the NEXRAD Level II archive.