Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 62, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jul 10, 2002, 4:44 PM CDT for Fort Bend County, Harris County, Waller County, Texas. It was in force for 3 days. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 10, 2002, 4:44 PM CDT (21:44 UTC)
- Expired
- Jul 13, 2002, 5:45 PM CDT
- In force
- 3 days
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Fort Bend County, TX, Harris County, TX, Waller County, TX
The radar
The Houston radar (KHGX), 158 km from the middle of the area, began a volume at 21:45 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 13, 5:35 PM CDT | Hail 0.75 | Riverside, TX | Hail across the northern part of the entire county. |
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.
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, 9.7 hours before the alert went out and 236 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
- 1963 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 714 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
201 WUUS54 KHGX 102144 SVRHOU TXC157-201-473-102230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 442 PM CDT WED JUL 10 2002 THE HOUSTON/GALVESTON NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WALLER COUNTY IN SOUTHEAST TEXAS HARRIS COUNTY IN SOUTHEAST TEXAS FORT BEND COUNTY IN SOUTHEAST TEXAS * UNTIL 530 PM CDT * AT 442 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTHEAST OF KATY...MOVING NORTHWEST AT 15 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... MISSION BEND...PECAN GROVE...FULSHEAR AND KATY THIS THUNDERSTORM WILL PRODUCE GUSTY WINDS IN EXCESS OF 45 MPH AND POSSIBLY LARGE HAIL. IN ADDITION...BE PREPARED FOR VERY HEAVY RAIN...POSSIBLY IN EXCESS OF 2 INCHES IN 30 MINUTES. 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 2973 9598 2956 9568 2973 9556 2989 9590
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 Jul 10, 1:44 PM CDT, 3 hours earlier.
Area forecast discussion, Jul 10, 1:44 PM CDT, 3 hours before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 144 PM CDT WED JUL 10 2002 CONVECTION HAS BEEN VERY SLOW TO START BUT FINALLY THE SEABREEZE HAS BEGUN TO FIRE OFF...MAINLY RIGHT NEAR THE COAST. EXPECT THESE SHOWERS AND THUNDERSTORMS TO WORK SLOWLY INLAND THROUGH THE EARLY EVENING HOURS THEN WEAKEN BEFORE SUNSET FOLLOWED BY A QUIET NIGHT. SPARSE COVERAGE EXPECTED THURSDAY WITH LITTLE LIFT IF ANY AND ONLY THE SEABREEZE TO WORK WITH FOR LL CONVERGENCE. WEAK COLD FRONT IN KS SHOULD MOVE SOUTH WITH THE STRONG UPPER RIDGING OVER THE ROCKIES AND THE VIGOROUS S/W ROLLING DOWN THE EAST SIDE INTO THE EASTERN US TROUGH. AVN HAS BEEN CONSISTENT WITH THIS FEATURE...TREND IS TO LEAVE THIS FEATURE DANGLING/CUTOFF OVER TEXAS BY MONDAY...MRF LOOKS LIKE IT IS TRYING TO HOLD ON TO THIS FEATURE AND KEEP IT CAUGHT UP IN THE EASTERN US TROUGH. THE PREFRONTAL TROUGH SHOULD MOVE INTO THE FA FRIDAY AFTERNOON OR EVENING WITH THE FRONT GETTING TO THE COAST ON SATURDAY. WILL CARRY GREATER POPS DUE TO THE FRONT BEING IN THE AREA AND THE ABUNDANT MOISTURE 1.7-1.9 PW. ENTRANCE REGION OF THE UPPER JET SHOULD HELP TO ENHANCE COVERAGE FRI EVENING-SAT MORNING. THE FRONT SHOULD LINGER OVER THE FA THROUGH SUNDAY THEN RETREAT NORTH. MARINE...QUIET WITH LITTLE GRADIENT. NO FLAGS...NO TIDE PROBLEMS. THE TROPICAL DISTURBANCE IN THE EASTERN GULF WILL NEED TO BE MONITORED FOR DEVELOPMENT OVER THE NEXT FEW DAYS THE ENVIRONMENT IT IS MOVING INTO LOOKS FAVORABLE FOR DEVELOPMENT...CURRENT GUIDANCE INDICATES THAT SHOULD IT DEVELOP IT WOULD THREATEN THE CENTRAL GULF COAST FROM WESTERN FL TO EASTERN LA. 45/46 .HGX...NONE. PRELIMS... CLL BB 074/095 073/092 071 211 IAH BB 075/094 075/092 075 322 GLS BB 079/090 079/090 079 322
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.