Alert archive / Texas / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 62
The Storm Prediction Center issued this severe thunderstorm watch at Mar 14, 2007, 10:34 AM CDT for 30 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 14, 2007, 10:34 AM CDT (15:34 UTC)
- Expired
- Mar 14, 2007, 7:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 30 counties
Aransas County, TX, Austin County, TX, Bee County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Galveston County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Harris County, TX, Jackson County, TX, Karnes County, TX, Lavaca County, TX, Lee County, TX, Liberty County, TX, Live Oak County, TX, Matagorda County, TX, Montgomery County, TX, Refugio County, TX, Victoria County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 96 km from the middle of the area, began a volume at 15:34 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
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 10:41 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 49 min |
| Mar 14, 10:53 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 37 min |
| Mar 14, 11:06 AM CDT | Severe Thunderstorm Warning | EWX | Fayette | 54 min |
| Mar 14, 11:26 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 34 min |
| Mar 14, 11:38 AM CDT | Severe Thunderstorm Warning | HGX | Washington | 52 min |
| Mar 14, 11:41 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 34 min |
| Mar 14, 12:26 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Matagorda | 34 min |
| Mar 14, 12:34 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Waller, Washington | 56 min |
| Mar 14, 12:44 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes | 31 min |
| Mar 14, 1:23 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend | 37 min |
| Mar 14, 2:56 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Harris | 49 min |
| Mar 14, 3:12 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 48 min |
| Mar 14, 4:45 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 45 min |
| Mar 14, 5:07 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 53 min |
| Mar 14, 5:58 PM CDT | Flash Flood Warning | EWX | DeWitt | 2 hr |
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, 3.6 hours before the alert went out and 227 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
- 1516 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 376 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 9:35 PM CDT | Mesoscale Discussion | SPC | Aransas, Bee, Brazoria, Calhoun, Chambers, Goliad and 6 more | 115 min |
| Mar 13, 11:11 PM CDT | Mesoscale Discussion | SPC | Brooks, Jim Hogg, Kenedy | 64 min |
| Mar 14, 9:52 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Austin, Bastrop, Bee, Bell and 37 more | 113 min |
| Mar 14, 1:05 PM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Bastrop, Bell, Brazoria, Brazos and 33 more | 85 min |
| Mar 14, 3:11 PM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bastrop, Bee, Brazoria, Caldwell and 25 more | 94 min |
| Mar 14, 6:17 PM CDT | Mesoscale Discussion | SPC | Jefferson, Orange | 88 min |
| Mar 14, 6:46 PM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bee, Calhoun, Colorado, DeWitt and 10 more | 59 min |
Nearby
Severe Thunderstorm Watches in Texas, 2007Every severe thunderstorm watch in 2007
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.