Alert archive / Texas / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 67
The Storm Prediction Center issued this severe thunderstorm watch at Apr 17, 2015, 11:53 AM CDT for 79 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 2015, 11:53 AM CDT (16:53 UTC)
- Expired
- Apr 17, 2015, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 79 counties
Archer County, TX, Atascosa County, TX, Bandera County, TX, Baylor County, TX, Bee County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Dimmit County, TX, Eastland County, TX, Edwards County, TX, Erath County, TX, Fisher County, TX, Foard County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hamilton County, TX, Hardeman County, TX, Haskell County, TX, Hays County, TX, Hood County, TX, Jack County, TX, Jones County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Knox County, TX, La Salle County, TX, Lampasas County, TX, Live Oak County, TX, Llano County, TX, Mason County, TX, Maverick County, TX, McCulloch County, TX, McLennan County, TX, McMullen County, TX, Medina County, TX, Menard County, TX, Mills County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Real County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sutton County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Webb County, TX, Wichita County, TX, Wilbarger County, TX, Williamson County, TX, Wilson County, TX, Wise County, TX, Young County, TX, Zavala County, TX
The radar
The San Angelo radar (KSJT), 138 km from the middle of the area, began a volume at 16:54 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
- 10%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 12:01 PM CDT | Flash Flood Warning | SJT | Tom Green | 3 hr |
| Apr 17, 12:08 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kerr, Real | 37 min |
| Apr 17, 12:15 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 45 min |
| Apr 17, 12:34 PM CDT | Flash Flood Warning | EWX | Edwards, Real | 3 hr |
| Apr 17, 12:35 PM CDT | Severe Thunderstorm Warning | SJT | Shackelford, Throckmorton | 40 min |
| Apr 17, 12:56 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick, Uvalde | 34 min |
| Apr 17, 12:59 PM CDT | Flash Flood Warning | SJT | Taylor | 2 hr |
| Apr 17, 1:04 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Taylor | 41 min |
| Apr 17, 1:27 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 43 min |
| Apr 17, 1:28 PM CDT | Severe Thunderstorm Warning | EWX | Real, Uvalde | 43 min |
| Apr 17, 1:30 PM CDT | Severe Thunderstorm Warning | SJT | Shackelford, Throckmorton | 45 min |
| Apr 17, 1:38 PM CDT | Severe Thunderstorm Warning | CRP | La Salle | 67 min |
| Apr 17, 2:34 PM CDT | Severe Thunderstorm Warning | CRP | La Salle, McMullen | 56 min |
| Apr 17, 2:45 PM CDT | Tornado Warning | CRP | La Salle, McMullen | 30 min |
| Apr 17, 2:55 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 35 min |
| Apr 17, 3:07 PM CDT | Flash Flood Warning | SJT | Taylor | 53 min |
| Apr 17, 3:08 PM CDT | Flash Flood Warning | EWX | Bandera, Kerr | 3 hr |
| Apr 17, 3:31 PM CDT | Severe Thunderstorm Warning | CRP | Live Oak, McMullen | 59 min |
| Apr 17, 3:39 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 51 min |
| Apr 17, 3:45 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Karnes, Wilson | 45 min |
| Apr 17, 3:46 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick | 29 min |
| Apr 17, 3:54 PM CDT | Severe Thunderstorm Warning | CRP | Bee, Live Oak | 51 min |
| Apr 17, 4:14 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney | 31 min |
| Apr 17, 4:20 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales, Karnes, Lavaca, Wilson | 55 min |
| Apr 17, 4:55 PM CDT | Severe Thunderstorm Warning | FWD | Parker | 31 min |
| Apr 17, 5:54 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Maverick, Zavala | 36 min |
| Apr 17, 5:59 PM CDT | Severe Thunderstorm Warning | CRP | Live Oak | 31 min |
| Apr 17, 6:20 PM CDT | Severe Thunderstorm Warning | CRP | Bee, Live Oak | 40 min |
| Apr 17, 6:47 PM CDT | Tornado Warning | CRP | Bee | 28 min |
| Apr 17, 6:57 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Frio, Zavala | 37 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
Del Rio, TX (KDLF), launched 12:00Z, 4.9 hours before the alert went out and 174 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
- 2878 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 7:08 PM CDT | Mesoscale Discussion | SPC | Beckham, Ellis, Roger Mills | 2 hr |
| Apr 16, 7:16 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Comanche, Cotton, Custer and 10 more | 89 min |
| Apr 16, 7:44 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 61 min |
| Apr 16, 8:56 PM CDT | Mesoscale Discussion | SPC | Roger Mills | 94 min |
| Apr 16, 9:17 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Custer, Dewey, Garfield and 5 more | 88 min |
| Apr 16, 10:20 PM CDT | Mesoscale Discussion | SPC | Beckham, Ellis, Harmon, Roger Mills | 2 hr |
| Apr 16, 11:59 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Custer, Dewey, Ellis, Greer and 4 more | 5 hr |
| Apr 17, 2:02 AM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Custer, Dewey, Ellis, Greer and 6 more | 88 min |
| Apr 17, 4:43 AM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Custer and 8 more | 62 min |
| Apr 17, 3:06 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 12 more | 84 min |
| Apr 16, 8:20 PM CDT | Mesoscale Discussion | SPC | Brazoria, Chambers, Colorado, Fort Bend, Galveston, Harris and 2 more | 85 min |
| Apr 16, 8:36 PM CDT | Tornado Watch | SPC | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 10 more | 3 hr |
| Apr 16, 11:33 PM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 6 more | 87 min |
| Apr 17, 1:10 AM CDT | Mesoscale Discussion | SPC | Borden, Childress, Cottle, Crosby, Dawson, Dickens and 13 more | 95 min |
| Apr 17, 10:26 AM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Burnet, Comal, Edwards and 12 more | 2 hr |
| Apr 17, 10:55 AM CDT | Mesoscale Discussion | SPC | Baylor, Brown, Callahan, Coke, Coleman, Concho and 15 more | 2 hr |
| Apr 17, 1:31 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bee, Calhoun, DeWitt, Dimmit, Frio and 12 more | 89 min |
| Apr 17, 3:22 PM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Brazoria, Calhoun, Colorado, DeWitt and 11 more | 113 min |
| Apr 17, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Austin, Bastrop, Brazoria, Brazos and 30 more | 6 hr |
| Apr 17, 5:02 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Bosque, Brown, Callahan, Clay and 28 more | 88 min |
| Apr 17, 5:41 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Brazoria, Brooks, Calhoun and 26 more | 94 min |
| Apr 17, 6:57 PM CDT | Tornado Watch | SPC | Aransas, Bee, Brooks, Calhoun, Duval, Goliad and 16 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2015Every severe thunderstorm watch in 2015
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.