Alert archive / Texas / Tornado Watches in 2021
Tornado Watch 119
The Storm Prediction Center issued this tornado watch at Apr 28, 2021, 1:57 PM CDT for 22 counties in Texas. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2021, 1:57 PM CDT (18:57 UTC)
- Expired
- Apr 28, 2021, 11:00 PM CDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 22 counties
Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Hood County, TX, Irion County, TX, Jack County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Taylor County, TX, Tom Green County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 47 km from the middle of the area, began a volume at 19:01 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 95%
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 |
|---|---|---|---|---|
| Apr 28, 2:07 PM CDT | Severe Thunderstorm Warning | SJT | Coke, Runnels | 53 min |
| Apr 28, 3:16 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Coleman, Runnels, Taylor | 44 min |
| Apr 28, 3:52 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Coleman | 38 min |
| Apr 28, 4:33 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Eastland | 34 min |
| Apr 28, 7:08 PM CDT | Severe Thunderstorm Warning | FWD | Parker | 52 min |
| Apr 28, 7:30 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Erath | 31 min |
| Apr 28, 9:06 PM CDT | Severe Thunderstorm Warning | FWD | Young | 54 min |
| Apr 28, 9:12 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, Concho, McCulloch | 48 min |
| Apr 28, 9:34 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Coleman | 56 min |
| Apr 28, 9:43 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Coleman, McCulloch, San Saba | 45 min |
| Apr 28, 10:01 PM CDT | Severe Thunderstorm Warning | FWD | Comanche | 59 min |
| Apr 28, 10:50 PM CDT | Severe Thunderstorm Warning | FWD | Erath | 55 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, 7.0 hours before the alert went out and 219 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
- 678 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 290 m²/s²
- 0-3 km storm-relative helicity
- 394 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 12.5
The text
As transmitted.
029
WWUS20 KWNS 281854
SEL9
SPC WW 281854
TXZ000-290200-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 119
NWS Storm Prediction Center Norman OK
155 PM CDT Wed Apr 28 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
North Central Texas
* Effective this Wednesday afternoon and evening from 155 PM
until 900 PM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Scattered large hail likely with isolated very large hail events
to 3 inches in diameter possible
Scattered damaging wind gusts to 70 mph likely
SUMMARY...Isolated supercell thunderstorms will develop this
afternoon and track northeastward across the watch area. Very large
hail, damaging gusts, and a few tornadoes are possible with the most
intense cells.
The tornado watch area is approximately along and 50 statute miles
east and west of a line from 20 miles east of San Angelo TX to 40
miles north of Mineral Wells TX. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 118...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24030.
...HartSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 8:01 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Fisher, Haskell, Jones and 10 more | 89 min |
| Apr 27, 8:23 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Archer, Baylor, Borden, Clay, Coke and 29 more | 7 hr |
| Apr 27, 10:39 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Crane, Dawson, Ector, Howard and 5 more | 2 hr |
| Apr 28, 1:38 AM CDT | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Eastland, Glasscock, Jones and 10 more | 2 hr |
| Apr 28, 3:01 AM CDT | Tornado Watch | SPC | Archer, Baylor, Callahan, Clay, Cooke, Eastland and 14 more | 7 hr |
| Apr 28, 6:35 AM CDT | Mesoscale Discussion | SPC | Archer, Callahan, Clay, Cooke, Eastland, Jack and 9 more | 3 hr |
| Apr 28, 9:25 AM CDT | Mesoscale Discussion | SPC | Cooke, Denton, Grayson, Parker, Wise | 65 min |
| Apr 28, 1:14 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Cooke, Denton and 14 more | 2 hr |
| Apr 28, 2:42 PM CDT | Mesoscale Discussion | SPC | Bandera, Blanco, Edwards, Gillespie, Kendall, Kerr and 9 more | 2 hr |
| Apr 28, 3:10 PM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 23 more | 8 hr |
| Apr 28, 3:40 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Eastland, Runnels and 2 more | 95 min |
| Apr 28, 5:41 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Frio, Kendall, Kinney, Maverick and 4 more | 2 hr |
| Apr 28, 6:01 PM CDT | Mesoscale Discussion | SPC | Lamar | 119 min |
Nearby
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.