Alert archive / Texas / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 260
The Storm Prediction Center issued this severe thunderstorm watch at May 23, 2017, 6:54 PM CDT for 15 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- May 23, 2017, 6:54 PM CDT (23:54 UTC)
- Expired
- May 23, 2017, 9:52 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Aransas County, TX, Bee County, TX, Calhoun County, TX, Duval County, TX, Goliad County, TX, Jim Wells County, TX, Kleberg County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Webb County, TX
The radar
The Corpus Christi radar (KCRP), 103 km from the middle of the area, began a volume at 23:55 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
- 30%
- 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
- 80%
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:09 PM CDT | Severe Thunderstorm Warning | CRP | Bee, Live Oak, Refugio, San Patricio | 51 min |
| May 23, 7:48 PM CDT | Severe Thunderstorm Warning | CRP | Aransas, Bee, Refugio, San Patricio | 57 min |
| May 23, 7:59 PM CDT | Severe Thunderstorm Warning | CRP | Kleberg, Nueces, San Patricio | 46 min |
| May 23, 8:05 PM CDT | Severe Thunderstorm Warning | CRP | Aransas, Calhoun, Refugio | 40 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, 11.9 hours before the alert went out and 121 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
- 749 J/kg
- Mixed-layer CIN
- -292 J/kg
- Mixed-layer LCL
- 743 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 7:26 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Callahan, Cochran, Coke, Crane and 40 more | 6 hr |
| May 22, 8:50 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cooke, Foard, Hardeman and 10 more | 2 hr |
| May 23, 2:34 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Brazos and 27 more | 116 min |
| May 23, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Atascosa, Austin, Bastrop, Bell and 51 more | 7 hr |
| May 23, 6:58 PM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bee, Calhoun, Colorado, DeWitt and 17 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2017Every severe thunderstorm watch in 2017
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.