Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 54, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 29, 2002, 2:16 PM CDT for San Jacinto County, Walker County, Texas. It was in force for 44 min. 1 report 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
- Jun 29, 2002, 2:16 PM CDT (19:16 UTC)
- Expired
- Jun 29, 2002, 3:00 PM CDT
- In force
- 44 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties San Jacinto County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 135 km from the middle of the area, began a volume at 19:17 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 |
|---|---|---|---|
| Jun 29, 2:30 PM CDT | Thunderstorm Wind | Huntsville, TX | Trees blown down. |
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, 7.3 hours before the alert went out and 217 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
- 1895 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 703 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jun 29, 9:30 AM CDT, 4 hours 46 minutes earlier.
Area forecast discussion, Jun 29, 9:30 AM CDT, 4 hours 46 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 930 AM CDT SAT JUN 29 2002 RADAR/SAT PIX SHOW LONG FETCH OF DEEP TROPICAL MOISTURE EXTENDING FROM THE MATAGORDA BAY AREA SOUTHWARD INTO THE GULF TO OFF TAMPICO. THIS WILL CONTINUE TO BE TRANSPORTED NORTH ALONG THE MODERATE H85 FLOW. WESTERN HALF OF CWA SHOULD SEE THE HEAVIEST PRECIP TODAY...BUT SINCE THEY HAVENT SEEN TOO MUCH THE LAST SEVERAL DAYS WERE NOT ANTICIPATING ANY WIDESPREAD FLOOD PROBLEMS ATTM. WILL CONTINUE TO MONITOR THOUGH WITH PWS AROUND 2.3 AND 88-D ESTIMATED RAINFALL RATES UP TO 3/HOUR CURRENTLY IN THE GULF. MODELS WANT TO ADVECT SOME DRIER LLVL AIR INTO THE ERN ZONES THIS AFTN...BUT WITH WIDESPREAD COVERAGE ALREADY THERE ITS KINDA HARD TO KNOCK THE POPS DOWN. MAY NEED TO DO AN AFTERNOON UPDATE IF IT DOES TAPER DOWN THEN. OTHERWISE...ONGOING ZONES IN GOOD SHAPE AND SEE NO NEED FOR AN UPDATE RIGHT NOW. WILL RAISE THE SCA FLAGS FOR THE MARINE UPDATE AS GRADIENT HAS TIGHTENED OFF THE COAST. 47/43/TF .HGX...SCA BAYS AND GULF 0-60 NM. PRELIMS... CLL TE 088/074 090/073 091 745 IAH TB 084/074 087/073 090 745 GLS TB 083/076 085/077 086 745
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 10:07 AM CDT | Special Marine Warning | HGX | 113 min | |
| Jun 29, 12:20 PM CDT | Special Marine Warning | HGX | 115 min | |
| Jun 29, 12:52 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 38 min |
| Jun 29, 2:44 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 61 min |
| Jun 29, 2:44 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison | 8 days |
| Jun 29, 3:06 PM CDT | Special Marine Warning | HGX | 54 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.