Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 32, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 11, 1997, 12:45 AM CDT for Wharton County, Texas. It was in force for 60 min. 2 reports 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
- Apr 11, 1997, 12:45 AM CDT (05:45 UTC)
- Expired
- Apr 11, 1997, 1:45 AM CDT
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Wharton County, TX
The radar
The Houston radar (KHGX), 113 km from the middle of the area, began a volume at 05:48 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 |
|---|---|---|---|
| Apr 11, 1:45 AM CDT | Hail 0.75 | Wharton, TX | |
| Apr 11, 1:46 AM CDT | Hail 0.75 | Pierce, TX |
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
Corpus Christi, TX (KCRP), launched 00:00Z, 5.8 hours before the alert went out and 204 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
- 1820 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 9.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Apr 10, 8:04 PM CDT, 4 hours 41 minutes earlier.
Area forecast discussion, Apr 10, 8:04 PM CDT, 4 hours 41 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 8 PM CDT THU APR 10 1997 SHORT WAVE CROSSING SOUTH TEXAS AT 00Z WILL MOVE THROUGH SOUTHEAS TEXAS OVERNIGHT. THUNDERSTORMS APPROACHING SEVERE INDICATION ON RADAR JUST WEST OF CWA...NOT SURPRIZED GIVEN CRP SOUNDING. EVEN SOME INDICATION OF WEAK ROTATION. NEED TO INCLUDE TSTMS ALL ZONES THIS UPDATE. ALSO MAY WANT TO ADD POSSIBLY SEVERE...ESPECIALLY WESTERN HALF...NOTH SURE HOW FAR EAST INSTABILITY WILL RIDE TONIGHT. SHOULD BE A LULL FRIDAY MORNING TIL MID AFTERNOON AS SHORT WAVE EXITS EAST AND MAIN TROUGH/FRONT APPROACH FROM WEST. 30
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 10:26 PM CDT | Severe Thunderstorm Warning | HGX | Matagorda | 59 min |
| Apr 10, 11:40 PM CDT | Severe Thunderstorm Warning | HGX | Wharton | 65 min |
| Apr 11, 1:07 AM CDT | Flash Flood Warning | HGX | Wharton | 118 min |
| Apr 11, 1:40 AM CDT | Tornado Warning | HGX | Wharton | 65 min |
| Apr 11, 2:04 AM CDT | Tornado Warning | HGX | Fort Bend | 61 min |
| Apr 11, 2:28 AM CDT | Flash Flood Warning | HGX | Fort Bend, Wharton | 3 hr |
| Apr 11, 2:28 AM CDT | Tornado Warning | HGX | Brazoria | 62 min |
| Apr 11, 2:40 AM CDT | Severe Thunderstorm Warning | HGX | Wharton | 65 min |
| Apr 11, 2:58 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend | 62 min |
| Apr 11, 3:42 AM CDT | Severe Thunderstorm Warning | HGX | Matagorda, Wharton | 33 min |
| Apr 11, 3:59 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 61 min |
| Apr 11, 4:08 AM CDT | Flash Flood Warning | HGX | Brazoria | 3 hr |
| Apr 11, 4:22 AM CDT | Tornado Warning | HGX | Brazoria, Galveston | 68 min |
| Apr 11, 5:23 AM CDT | Severe Thunderstorm Warning | HGX | Matagorda | 67 min |
| Apr 11, 5:26 AM CDT | Tornado Warning | HGX | Galveston | 64 min |
| Apr 11, 5:27 AM CDT | Severe Thunderstorm Warning | HGX | Harris | 63 min |
| Apr 11, 5:33 AM CDT | Flash Flood Warning | HGX | Galveston | 3 hr |
| Apr 11, 5:45 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 60 min |
| Apr 11, 9:24 AM CDT | Flash Flood Warning | HGX | Wharton | 4 hr |
| Apr 11, 3:30 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 60 min |
| Apr 11, 4:25 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Montgomery | 65 min |
| Apr 11, 5:06 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 64 min |
| Apr 11, 5:17 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 58 min |
| Apr 11, 6:11 PM CDT | Tornado Warning | HGX | Harris | 49 min |
| Apr 11, 6:45 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 60 min |
| Apr 11, 6:58 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 32 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997
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.