Alert archive / Texas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 80
The Storm Prediction Center issued this severe thunderstorm watch at Apr 2, 2013, 3:54 PM CDT for 20 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2013, 3:54 PM CDT (20:54 UTC)
- Expired
- Apr 2, 2013, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Jackson County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Ft Hood radar (KGRK), 131 km from the middle of the area, began a volume at 20:57 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
- 10%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 6:27 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 48 min |
| Apr 2, 7:46 PM CDT | Severe Thunderstorm Warning | HGX | Colorado, Wharton | 44 min |
| Apr 2, 8:30 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Colorado, Fort Bend, Matagorda, Wharton | 30 min |
| Apr 2, 8:57 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Colorado, Fort Bend, Matagorda, Wharton | 48 min |
| Apr 2, 9:43 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend | 32 min |
| Apr 2, 10:11 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Galveston, Harris, Montgomery | 49 min |
| Apr 2, 10:56 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Chambers, Galveston, Harris, Liberty | 49 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
Corpus Christi, TX (KCRP), launched 12:00Z, 8.9 hours before the alert went out and 266 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
- 598 J/kg
- Mixed-layer CIN
- -158 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 7:39 PM CDT | Mesoscale Discussion | SPC | Baylor, Callahan, Haskell, Jones, King, Knox and 5 more | 66 min |
| Apr 1, 11:52 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Brown, Callahan, Coke, Coleman and 27 more | 53 min |
| Apr 2, 3:20 AM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Burleson, Coryell, Falls, Hamilton and 6 more | 115 min |
| Apr 2, 1:42 PM CDT | Mesoscale Discussion | SPC | Brewster, Concho, Crockett, Edwards, Irion, Jeff Davis and 11 more | 93 min |
| Apr 2, 1:59 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Blanco, Bosque, Burleson and 25 more | 61 min |
| Apr 2, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 56 more | 8 hr |
| Apr 2, 3:38 PM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Colorado, Fort Bend and 7 more | 67 min |
| Apr 2, 5:03 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Brewster and 41 more | 87 min |
| Apr 2, 5:41 PM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Burleson, Colorado, Fayette, Fort Bend and 9 more | 94 min |
| Apr 2, 6:33 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Eastland, Fisher, Haskell and 12 more | 117 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.