Alert archive / Texas / Tornado Watches in 2019
Tornado Watch 113
The Storm Prediction Center issued this tornado watch at Apr 30, 2019, 2:19 PM CDT for 30 counties in Texas. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2019, 2:19 PM CDT (19:19 UTC)
- Expired
- Apr 30, 2019, 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 30 counties
Archer County, TX, Baylor County, TX, Bosque County, TX, Clay County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 46 km from the middle of the area, began a volume at 19:22 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
- 20%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 3:00 PM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 45 min |
| Apr 30, 3:10 PM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 50 min |
| Apr 30, 4:00 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 45 min |
| Apr 30, 4:03 PM CDT | Severe Thunderstorm Warning | OUN | Clay, Wichita | 42 min |
| Apr 30, 4:11 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Wise | 37 min |
| Apr 30, 4:31 PM CDT | Tornado Warning | OUN | Clay, Wichita | 29 min |
| Apr 30, 4:56 PM CDT | Tornado Warning | OUN | Clay | 24 min |
| Apr 30, 5:16 PM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 44 min |
| Apr 30, 5:17 PM CDT | Tornado Warning | FWD | Parker, Tarrant | 43 min |
| Apr 30, 5:27 PM CDT | Severe Thunderstorm Warning | FWD | Cooke, Denton | 63 min |
| Apr 30, 5:55 PM CDT | Tornado Warning | FWD | Denton, Tarrant, Wise | 50 min |
| Apr 30, 5:57 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 48 min |
| Apr 30, 6:26 PM CDT | Flash Flood Warning | FWD | Denton, Tarrant | 3 hr |
| Apr 30, 6:36 PM CDT | Tornado Warning | FWD | Denton, Tarrant | 24 min |
| Apr 30, 6:55 PM CDT | Severe Thunderstorm Warning | OUN | Clay, Wichita | 50 min |
| Apr 30, 6:59 PM CDT | Tornado Warning | FWD | Denton | 31 min |
| Apr 30, 7:51 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 39 min |
| Apr 30, 8:18 PM CDT | Severe Thunderstorm Warning | FWD | Fannin, Grayson | 42 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, 7.3 hours before the alert went out and 17 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
- 1278 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.5
The text
As transmitted.
472
WWUS20 KWNS 301915
SEL3
SPC WW 301915
TXZ000-010400-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 113
NWS Storm Prediction Center Norman OK
220 PM CDT Tue Apr 30 2019
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
North Central Texas
* Effective this Tuesday afternoon and evening from 220 PM until
1100 PM CDT.
* Primary threats include...
A couple tornadoes possible
Widespread large hail and isolated very large hail events to 3
inches in diameter likely
Scattered damaging wind gusts to 70 mph likely
SUMMARY...Thunderstorms are expected to develop and intensify over
north-central Texas this afternoon in a very moist and unstable
environment. Large hail is the primary threat, but conditions are
favorable for a tornado or two in the strongest cells through the
early evening.
The tornado watch area is approximately along and 60 statute miles
east and west of a line from 35 miles west northwest of Sherman TX
to 45 miles south southeast of Stephenville TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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 111...WW 112...
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 24035.
...HartSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:01 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Dawson, Ector, Gaines, Howard and 7 more | 3 hr |
| Apr 29, 9:35 PM CDT | Mesoscale Discussion | SPC | Ector, Loving, Winkler | 115 min |
| Apr 30, 1:53 PM CDT | Mesoscale Discussion | SPC | Archer, Bosque, Brown, Callahan, Clay, Coleman and 28 more | 2 hr |
| Apr 30, 2:06 PM CDT | Mesoscale Discussion | SPC | Bailey, Borden, Cochran, Crosby, Dawson, Dickens and 17 more | 2 hr |
| Apr 30, 2:56 PM CDT | Mesoscale Discussion | SPC | Baylor, Wilbarger | 2 hr |
| Apr 30, 4:26 PM CDT | Severe Thunderstorm Watch | SPC | Borden, Briscoe, Brown, Callahan, Childress, Coke and 44 more | 8 hr |
| Apr 30, 5:21 PM CDT | Mesoscale Discussion | SPC | Archer, Bosque, Clay, Collin, Comanche, Cooke and 19 more | 84 min |
| Apr 30, 6:47 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Cottle, Crane, Crockett, Crosby and 36 more | 118 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.