Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 110, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 17, 1999, 8:29 PM CDT for Blanco County, Gillespie County, Texas. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 17, 1999, 8:29 PM CDT (01:29 UTC)
- Expired
- May 17, 1999, 9:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Blanco County, TX, Gillespie County, TX
The radar
The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 01:32 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 17, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 17, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 1.5 hours before the alert went out and 233 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
- 4965 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- -71 m²/s²
- Significant tornado parameter
- -1.7
- Supercell composite
- -11.7
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 Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 7:17 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 58 min |
| May 17, 7:24 PM CDT | Tornado Warning | EWX | Val Verde | 36 min |
| May 17, 8:01 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 59 min |
| May 17, 8:13 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 32 min |
| May 17, 8:42 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| May 17, 8:59 PM CDT | Tornado Warning | EWX | Val Verde | 31 min |
| May 17, 9:29 PM CDT | Tornado Warning | EWX | Kinney, Val Verde | 31 min |
| May 17, 9:58 PM CDT | Tornado Warning | EWX | Val Verde | 17 min |
| May 17, 10:41 PM CDT | Flash Flood Warning | EWX | Travis | 79 min |
| May 17, 10:41 PM CDT | Severe Thunderstorm Warning | EWX | Travis | 79 min |
| May 17, 10:49 PM CDT | Flash Flood Warning | EWX | Gillespie | 101 min |
| May 17, 11:06 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Gonzales | 54 min |
| May 17, 11:26 PM CDT | Severe Thunderstorm Warning | EWX | Guadalupe | 64 min |
| May 17, 11:34 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales, Lavaca | 86 min |
| May 17, 11:34 PM CDT | Severe Thunderstorm Warning | EWX | Karnes, Wilson | 86 min |
| May 17, 11:39 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 66 min |
| May 17, 11:51 PM CDT | Flash Flood Warning | EWX | Bandera | 54 min |
| May 18, 12:30 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 60 min |
| May 18, 12:56 AM CDT | Severe Thunderstorm Warning | EWX | Frio | 64 min |
| May 18, 2:16 AM CDT | Severe Thunderstorm Warning | EWX | Maverick, Zavala | 64 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.