Alert archive / Texas / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 432
The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2012, 3:22 PM CDT for 41 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2012, 3:22 PM CDT (20:22 UTC)
- Expired
- Jun 26, 2012, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 41 counties
Atascosa County, TX, Austin County, TX, Bastrop County, TX, Bee County, TX, Bexar County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Harris County, TX, Hays County, TX, Houston County, TX, Jackson County, TX, Karnes County, TX, Lavaca County, TX, Lee County, TX, Liberty County, TX, Live Oak County, TX, Madison County, TX, McMullen County, TX, Medina County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Travis County, TX, Trinity County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 93 km from the middle of the area, began a volume at 20:26 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 3:27 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris, Waller | 48 min |
| Jun 26, 4:28 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Wharton | 62 min |
| Jun 26, 4:38 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity, Walker | 67 min |
| Jun 26, 5:08 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 41 min |
| Jun 26, 5:10 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Fort Bend, Matagorda, Wharton | 34 min |
| Jun 26, 5:33 PM CDT | Severe Thunderstorm Warning | HGX | San Jacinto, Trinity, Walker | 27 min |
| Jun 26, 5:56 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 49 min |
| Jun 26, 6:16 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 29 min |
| Jun 26, 6:17 PM CDT | Tornado Warning | HGX | Colorado | 28 min |
| Jun 26, 6:26 PM CDT | Severe Thunderstorm Warning | EWX | Fayette, Lavaca | 49 min |
| Jun 26, 6:52 PM CDT | Severe Thunderstorm Warning | EWX | Fayette, Gonzales, Lavaca | 53 min |
| Jun 26, 7:31 PM CDT | Severe Thunderstorm Warning | EWX | Karnes | 28 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, 8.4 hours before the alert went out and 229 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
- 1292 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1814 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:02 PM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bandera, Bastrop, Bee, Bexar and 49 more | 118 min |
| Jun 26, 6:58 PM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bastrop, Bee, Bexar, Brazos and 35 more | 62 min |
Nearby
Severe Thunderstorm Watches in Texas, 2012Every severe thunderstorm watch in 2012
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.