Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 321, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 17, 1998, 2:46 PM CDT for Hamilton 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
- Jul 17, 1998, 2:46 PM CDT (19:46 UTC)
- Expired
- Jul 17, 1998, 3:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Hamilton County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 123 km from the middle of the area, began a volume at 19:49 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 17, 3:15 PM CDT | Thunderstorm Wind | Hamilton, TX | An apartment building was unroofed and powerlines were blown down from thunderstorm winds. |
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
Fort Worth, TX (KFWD), launched 12:00Z, 7.8 hours before the alert went out and 147 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
- 975 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 1679 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 12:50 PM CDT | Severe Thunderstorm Warning | FWD | Bosque | 40 min |
| Jul 17, 1:28 PM CDT | Severe Thunderstorm Warning | FWD | Bosque | 47 min |
| Jul 17, 1:50 PM CDT | Severe Thunderstorm Warning | FWD | Grayson | 40 min |
| Jul 17, 2:17 PM CDT | Severe Thunderstorm Warning | FWD | Hood | 43 min |
| Jul 17, 2:24 PM CDT | Severe Thunderstorm Warning | FWD | McLennan | 51 min |
| Jul 17, 2:50 PM CDT | Severe Thunderstorm Warning | FWD | Cooke | 40 min |
| Jul 17, 3:47 PM CDT | Severe Thunderstorm Warning | FWD | Bell | 58 min |
| Jul 17, 3:55 PM CDT | Severe Thunderstorm Warning | FWD | Hunt, Kaufman, Rockwall | 20 min |
| Jul 17, 4:11 PM CDT | Severe Thunderstorm Warning | FWD | Kaufman, Rockwall | 49 min |
| Jul 17, 4:17 PM CDT | Severe Thunderstorm Warning | FWD | Collin | 43 min |
| Jul 17, 4:31 PM CDT | Severe Thunderstorm Warning | FWD | Van Zandt | 44 min |
| Jul 17, 4:50 PM CDT | Severe Thunderstorm Warning | FWD | Anderson | 40 min |
| Jul 17, 5:14 PM CDT | Severe Thunderstorm Warning | FWD | Henderson | 46 min |
| Jul 17, 5:35 PM CDT | Severe Thunderstorm Warning | FWD | Ellis | 40 min |
| Jul 17, 6:25 PM CDT | Severe Thunderstorm Warning | FWD | Anderson, Henderson | 20 min |
| Jul 17, 6:26 PM CDT | Severe Thunderstorm Warning | FWD | Freestone | 49 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning in 1998
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.