Alert archive / Texas / Tornado Watches in 1999
Tornado Watch 85
The Storm Prediction Center issued this tornado watch at Mar 12, 1999, 3:45 PM CST for 39 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 1999, 3:45 PM CST (21:45 UTC)
- Expired
- Mar 12, 1999, 9:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Houston County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Maverick County, TX, McLennan County, TX, Medina County, TX, Milam County, TX, Real County, TX, Robertson County, TX, Travis County, TX, Uvalde County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 102 km from the middle of the area, began a volume at 21:47 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.
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 3:53 PM CST | Tornado Warning | EWX | Kinney | 42 min |
| Mar 12, 4:03 PM CST | Severe Thunderstorm Warning | EWX | Llano | 62 min |
| Mar 12, 4:17 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 58 min |
| Mar 12, 4:45 PM CST | Severe Thunderstorm Warning | EWX | Burnet | 60 min |
| Mar 12, 5:16 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 59 min |
| Mar 12, 5:21 PM CST | Tornado Warning | EWX | Burnet, Travis | 64 min |
| Mar 12, 5:35 PM CST | Tornado Warning | EWX | Medina, Uvalde | 60 min |
| Mar 12, 6:13 PM CST | Tornado Warning | EWX | Travis, Williamson | 57 min |
| Mar 12, 6:30 PM CST | Severe Thunderstorm Warning | FWD | Bell, Milam | 45 min |
| Mar 12, 6:32 PM CST | Severe Thunderstorm Warning | EWX | Frio, Medina, Zavala | 58 min |
| Mar 12, 6:45 PM CST | Tornado Warning | EWX | Frio | 60 min |
| Mar 12, 7:04 PM CST | Severe Thunderstorm Warning | EWX | Bastrop, Travis | 61 min |
| Mar 12, 7:48 PM CST | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 62 min |
| Mar 12, 8:01 PM CST | Severe Thunderstorm Warning | EWX | Lee | 64 min |
| Mar 12, 8:07 PM CST | Severe Thunderstorm Warning | EWX | Uvalde, Zavala | 63 min |
| Mar 12, 8:21 PM CST | Severe Thunderstorm Warning | EWX | Kinney | 64 min |
| Mar 12, 8:44 PM CST | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 61 min |
| Mar 12, 8:49 PM CST | Severe Thunderstorm Warning | EWX | Gillespie | 46 min |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 9.8 hours before the alert went out and 176 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
- 2301 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 328 m²/s²
- Significant tornado parameter
- 4.5
- Supercell composite
- 17.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 8:45 PM CST | Severe Thunderstorm Watch | SPC | Baylor, Childress, Collingsworth, Cottle, Dickens, Foard and 12 more | 5 hr |
| Mar 12, 6:00 AM CST | Severe Thunderstorm Watch | SPC | Archer, Baylor, Brown, Callahan, Clay, Coke and 35 more | 5 hr |
| Mar 12, 10:45 AM CST | Severe Thunderstorm Watch | SPC | Anderson, Archer, Baylor, Bosque, Brown, Callahan and 47 more | 6 hr |
| Mar 12, 10:45 AM CST | Tornado Watch | SPC | Austin, Bastrop, Bell, Blanco, Brazos, Brown and 32 more | 6 hr |
Nearby
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.