Alert archive / Texas / Tornado Watches in 2024
Tornado Watch 157
The Storm Prediction Center issued this tornado watch at Apr 28, 2024, 1:00 AM CDT for 26 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2024, 1:00 AM CDT (06:00 UTC)
- Expired
- Apr 28, 2024, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 26 counties
Bosque County, TX, Collin County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Parker County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 49 km from the middle of the area, began a volume at 06:02 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:28 AM CDT | Flash Flood Warning | FWD | Johnson, Parker, Tarrant | 3 hr |
| Apr 28, 4:47 AM CDT | Flash Flood Warning | FWD | Dallas | 3 hr |
| Apr 28, 5:43 AM CDT | Flash Flood Warning | FWD | Bosque, Hill, Johnson | 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
Fort Worth, TX (KFWD), launched 00:00Z, 6.0 hours before the alert went out and 42 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
- 2859 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 941 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 260 m²/s²
- 0-3 km storm-relative helicity
- 326 m²/s²
- Significant tornado parameter
- 5.2
- Supercell composite
- 21.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:30 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Foard, Hardeman, Haskell and 7 more | 60 min |
| Apr 27, 7:50 PM CDT | Tornado Watch | SPC | Archer, Baylor, Clay, Cooke, Eastland, Fisher and 19 more | 7 hr |
| Apr 27, 9:23 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coke, Coleman, Concho, Crockett and 27 more | 8 hr |
| Apr 27, 11:21 PM CDT | Mesoscale Discussion | SPC | Coke, Crockett, Glasscock, Howard, Irion, Mitchell and 10 more | 114 min |
| Apr 28, 12:32 AM CDT | Mesoscale Discussion | SPC | Collin, Comanche, Dallas, Delta, Denton, Ellis and 14 more | 88 min |
| Apr 28, 4:11 AM CDT | Mesoscale Discussion | SPC | Bosque, Collin, Coryell, Dallas, Delta, Ellis and 21 more | 64 min |
| Apr 28, 9:46 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Brazos, Burleson, Freestone, Grimes and 10 more | 89 min |
| Apr 28, 1:28 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Brazos, Burleson, Cherokee, Falls and 10 more | 2 hr |
| Apr 28, 2:25 PM CDT | Tornado Watch | SPC | Anderson, Angelina, Austin, Bastrop, Brazos, Burleson and 38 more | 11 hr |
| Apr 28, 3:38 PM CDT | Mesoscale Discussion | SPC | Lamar, Red River | 2 hr |
| Apr 28, 3:47 PM CDT | Mesoscale Discussion | SPC | Anderson, Brazos, Burleson, Cherokee, Houston, Leon and 3 more | 58 min |
| Apr 28, 6:13 PM CDT | Mesoscale Discussion | SPC | Angelina, Cherokee, Harrison, Houston, Marion, Nacogdoches and 6 more | 62 min |
| Apr 28, 6:42 PM CDT | Tornado Watch | SPC | Jasper, Newton, Tyler | 8 hr |
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.