Alert archive / Texas / Severe Thunderstorm Watches in 2020
Severe Thunderstorm Watch 231
The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2020, 1:47 PM CDT for 11 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 27, 2020, 1:47 PM CDT (18:47 UTC)
- Expired
- May 27, 2020, 9:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
Counties Brown County, TX, Callahan County, TX, Coleman County, TX, Concho County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Runnels County, TX, San Saba County, TX, Taylor County, TX
The radar
The Dyess AFB radar (KDYX), 97 km from the middle of the area, began a volume at 18:47 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
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 70%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 3:05 PM CDT | Severe Thunderstorm Warning | SJT | Concho, Runnels | 55 min |
| May 27, 3:14 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, Runnels, Taylor | 61 min |
| May 27, 3:18 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Callahan, Coleman | 57 min |
| May 27, 3:50 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Shackelford | 55 min |
| May 27, 3:55 PM CDT | Severe Thunderstorm Warning | SJT | Concho, McCulloch, Menard | 65 min |
| May 27, 4:04 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Coleman, McCulloch, Runnels | 56 min |
| May 27, 4:28 PM CDT | Severe Thunderstorm Warning | SJT | Callahan | 17 min |
| May 27, 4:39 PM CDT | Severe Thunderstorm Warning | SJT | McCulloch, Mason, Menard, San Saba | 66 min |
| May 27, 4:56 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, McCulloch | 35 min |
| May 27, 5:28 PM CDT | Severe Thunderstorm Warning | SJT | San Saba | 50 min |
| May 27, 5:37 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, McCulloch, Mason, San Saba | 53 min |
| May 27, 6:34 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, Mason, Menard | 56 min |
| May 27, 6:53 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, Menard | 67 min |
| May 27, 7:26 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, Sutton | 34 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 12:00Z, 6.8 hours before the alert went out and 216 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
- 32 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 1794 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 12:08 PM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Bell, Brazos, Burleson, Burnet and 16 more | 2 hr |
| May 27, 12:44 PM CDT | Mesoscale Discussion | SPC | Brown, Burnet, Callahan, Coleman, Comanche, Concho and 11 more | 2 hr |
| May 27, 1:24 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Bastrop, Bell, Blanco, Bosque, Brazoria and 42 more | 9 hr |
| May 27, 2:33 PM CDT | Mesoscale Discussion | SPC | Austin, Colorado, Fayette, Fort Bend, Harris, Lee and 3 more | 87 min |
| May 27, 3:40 PM CDT | Mesoscale Discussion | SPC | Brown, Burnet, Callahan, Coleman, Concho, Lampasas and 6 more | 95 min |
| May 27, 5:05 PM CDT | Mesoscale Discussion | SPC | Bexar, Blanco, Caldwell, Comal, DeWitt, Gillespie and 13 more | 115 min |
| May 27, 5:23 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 22 more | 8 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2020Every severe thunderstorm watch in 2020
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.