Alert archive / Texas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 162
The Storm Prediction Center issued this severe thunderstorm watch at May 15, 2013, 11:28 PM CDT for 29 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 15, 2013, 11:28 PM CDT (04:28 UTC)
- Expired
- May 16, 2013, 4:07 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 29 counties
Anderson County, TX, Bastrop County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Falls County, TX, Fayette County, TX, Freestone County, TX, Gillespie County, TX, Grimes County, TX, Hays County, TX, Henderson County, TX, Houston County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Milam County, TX, Rains County, TX, Robertson County, TX, Travis County, TX, Trinity County, TX, Van Zandt County, TX, Walker County, TX, Washington County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 92 km from the middle of the area, began a volume at 04:30 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
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 12:08 AM CDT | Severe Thunderstorm Warning | FWD | Ellis, Henderson, Kaufman, Navarro | 52 min |
| May 16, 1:45 AM CDT | Severe Thunderstorm Warning | EWX | Llano | 60 min |
| May 16, 2:14 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 61 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 00:00Z, 4.5 hours before the alert went out and 152 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
- 1604 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 436 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 20.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 7:18 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Childress, Cottle, Dickens and 19 more | 57 min |
| May 15, 7:40 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Collin, Comanche, Cooke, Coryell and 13 more | 65 min |
| May 15, 9:02 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Brazos, Brown, Burleson and 45 more | 88 min |
| May 15, 11:39 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Coryell, Dallas, Ellis, Hamilton and 11 more | 96 min |
| May 16, 1:26 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bell, Brazos, Burleson, Burnet and 21 more | 94 min |
| May 16, 3:21 AM CDT | Mesoscale Discussion | SPC | Brazos, Burleson, Grimes, Lee, Madison, Milam and 1 more | 24 min |
| May 16, 12:07 PM CDT | Mesoscale Discussion | SPC | Harrison, Marion | 83 min |
| May 16, 3:48 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Borden, Briscoe, Carson, Castro and 27 more | 87 min |
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.