Alert archive / Texas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 73
The Storm Prediction Center issued this severe thunderstorm watch at Mar 31, 2013, 1:17 PM CDT for 53 counties in Texas. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2013, 1:17 PM CDT (18:17 UTC)
- Expired
- Mar 31, 2013, 9:50 PM CDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 53 counties
Atascosa County, TX, Austin 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, Crockett County, TX, Dimmit County, TX, Edwards County, TX, Falls County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Llano County, TX, Madison County, TX, Mason County, TX, Maverick County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Milam County, TX, Montgomery County, TX, Real County, TX, Robertson County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Ft Hood radar (KGRK), 51 km from the middle of the area, began a volume at 18:19 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 1:35 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, Sutton | 40 min |
| Mar 31, 1:37 PM CDT | Severe Thunderstorm Warning | SJT | Kimble | 38 min |
| Mar 31, 1:38 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis | 37 min |
| Mar 31, 2:17 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kerr | 43 min |
| Mar 31, 2:52 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kerr, Real | 38 min |
| Mar 31, 3:00 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Real | 45 min |
| Mar 31, 3:08 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery, San Jacinto | 37 min |
| Mar 31, 3:28 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 47 min |
| Mar 31, 3:42 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 48 min |
| Mar 31, 4:06 PM CDT | Severe Thunderstorm Warning | EWX | Real | 24 min |
| Mar 31, 5:07 PM CDT | Severe Thunderstorm Warning | EWX | Medina, Uvalde | 53 min |
| Mar 31, 5:11 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney, Uvalde | 64 min |
| Mar 31, 5:33 PM CDT | Severe Thunderstorm Warning | EWX | Frio, Medina, Uvalde, Zavala | 57 min |
| Mar 31, 5:40 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 35 min |
| Mar 31, 6:08 PM CDT | Tornado Warning | EWX | Frio | 37 min |
| Mar 31, 6:15 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde, Zavala | 60 min |
| Mar 31, 6:39 PM CDT | Severe Thunderstorm Warning | EWX | Frio | 36 min |
| Mar 31, 6:55 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Zavala | 50 min |
| Mar 31, 7:13 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 62 min |
| Mar 31, 7:41 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 64 min |
| Mar 31, 7:54 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick, Val Verde | 66 min |
| Mar 31, 9:00 PM CDT | Severe Thunderstorm Warning | EWX | Maverick | 60 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 6.3 hours before the alert went out and 257 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
- 1833 J/kg
- Mixed-layer CIN
- -201 J/kg
- Mixed-layer LCL
- 878 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 8:14 PM CDT | Mesoscale Discussion | SPC | Clay, Montague, Wichita, Wilbarger | 91 min |
| Mar 31, 1:13 AM CDT | Mesoscale Discussion | SPC | Wheeler | 62 min |
| Mar 31, 4:54 AM CDT | Mesoscale Discussion | SPC | Clay, Collin, Cooke, Delta, Denton, Fannin and 8 more | 96 min |
| Mar 31, 5:10 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bosque, Bowie, Camp, Cass, Cherokee and 44 more | 7 hr |
| Mar 31, 7:36 AM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Collin and 34 more | 114 min |
| Mar 31, 9:20 AM CDT | Severe Thunderstorm Watch | SPC | Angelina, Sabine, San Augustine | 5 hr |
| Mar 31, 10:33 AM CDT | Mesoscale Discussion | SPC | Anderson, Cherokee, Gregg, Harrison, Nacogdoches, Panola and 2 more | 57 min |
| Mar 31, 11:54 AM CDT | Mesoscale Discussion | SPC | Angelina, Jasper, Newton, Sabine, San Augustine, Shelby and 1 more | 36 min |
| Mar 31, 12:17 PM CDT | Severe Thunderstorm Watch | SPC | Angelina, Hardin, Houston, Jasper, Newton, Polk and 5 more | 6 hr |
| Mar 31, 1:00 PM CDT | Mesoscale Discussion | SPC | Austin, Bandera, Bastrop, Bexar, Blanco, Brazos and 32 more | 60 min |
| Mar 31, 2:32 PM CDT | Mesoscale Discussion | SPC | Angelina, Hardin, Jasper, Liberty, Nacogdoches, Newton and 8 more | 58 min |
| Mar 31, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | Brazoria, Chambers, Colorado, Fort Bend, Galveston, Harris and 4 more | 5 hr |
| Mar 31, 5:24 PM CDT | Mesoscale Discussion | SPC | Atascosa, Brazoria, Chambers, DeWitt, Dimmit, Fort Bend and 18 more | 96 min |
| Mar 31, 6:20 PM CDT | Severe Thunderstorm Watch | SPC | Bee, Duval, Jim Wells, Kleberg, La Salle, Live Oak and 4 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2013Every severe thunderstorm watch in 2013
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.