Alert archive / Texas / Tornado Warnings in 2002
Tornado Warning 18, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Sep 7, 2002, 1:39 AM CDT for Brazoria County, Matagorda County, Wharton County, Texas. It was in force for 51 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
- Sep 7, 2002, 1:39 AM CDT (06:39 UTC)
- Expired
- Sep 7, 2002, 2:30 AM CDT
- In force
- 51 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Brazoria County, TX, Matagorda County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 90 km from the middle of the area, began a volume at 06:42 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 |
|---|---|---|---|
| Sep 7, 2:15 AM CDT | Tornado F0 | Boling, TX | Tornado destroyed one mobile home, damaged three others and tore apart a barn in Boling. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 6, 11:35 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 6.7 hours before the alert went out and 207 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
- 408 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1317 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 7:53 PM CDT | Flash Flood Warning | HGX | Brazoria | 3 hr |
| Sep 6, 8:51 PM CDT | Flash Flood Warning | HGX | Galveston | 3 hr |
| Sep 6, 10:35 PM CDT | Flash Flood Warning | HGX | Brazoria, Matagorda | 3 hr |
| Sep 6, 11:17 PM CDT | Tornado Warning | HGX | Brazoria | 43 min |
| Sep 7, 12:01 AM CDT | Tornado Warning | HGX | Brazoria | 44 min |
| Sep 7, 12:17 AM CDT | Flash Flood Warning | HGX | Matagorda | 3 hr |
| Sep 7, 12:34 AM CDT | Tornado Warning | HGX | Matagorda | 41 min |
| Sep 7, 12:45 AM CDT | Tornado Warning | HGX | Brazoria | 45 min |
| Sep 7, 2:13 AM CDT | Flash Flood Warning | HGX | Fort Bend, Wharton | 3 hr |
| Sep 7, 2:47 AM CDT | Tornado Warning | HGX | Brazoria, Fort Bend | 43 min |
| Sep 7, 2:56 AM CDT | Flash Flood Warning | HGX | Brazoria | 2 hr |
| Sep 7, 3:39 AM CDT | Tornado Warning | HGX | Wharton | 36 min |
| Sep 7, 4:37 AM CDT | Flash Flood Warning | HGX | Colorado | 3 hr |
| Sep 7, 1:38 PM CDT | Flash Flood Warning | HGX | Waller, Washington | 3 hr |
Nearby
Tornado Warnings in Texas, 2002Every tornado warning in 2002Tornadoes 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.