Tornado Watch 121

Issued

Apr 28, 2021, 7:55 PM CDT (00:55 UTC)

Expired

Apr 29, 2021, 2:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 168 km from the middle of the area, began a volume at 00:59 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.

Two or more tornadoes

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

60%

• Mesoscale Discussion 458 Severe potential...watch possibleApr 28, 6:01 PM CDT
• Mesoscale Discussion 461 Tornado watch 119Apr 28, 7:31 PM CDT
• Mesoscale Discussion 463 Tornado watch 121Apr 28, 9:19 PM CDT
• Mesoscale Discussion 464 Severe potential...watch possibleApr 28, 10:22 PM CDT
• Mesoscale Discussion 465 Tornado watch 121...122Apr 28, 11:03 PM CDT
• Mesoscale Discussion 466 Tornado watch 121Apr 29, 1:09 AM CDT

081 
WWUS20 KWNS 290053
SEL1  
SPC WW 290053
ARZ000-OKZ000-TXZ000-290700-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 121
NWS Storm Prediction Center Norman OK
755 PM CDT Wed Apr 28 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Western Arkansas
  Southeast Oklahoma
  North-central/Northeast Texas

* Effective this Wednesday night and Thursday morning from 755 PM
  until 200 AM CDT.

* Primary threats include...
  A couple tornadoes possible
  Isolated damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Scattered strong to severe thunderstorms will remain a
possibility this evening, initially across north-central Texas and
near the DFW Metroplex northeastward toward the Oklahoma/Arkansas
border vicinity. A moist environment and moderately strong shear
would support some tornado risk aside from damaging winds and
possibly some hail.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 20 miles northeast of Fort Smith AR to
30 miles south southeast of Stephenville TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).

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...WW 119...WW 120...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24025.

...Guyer

Tornado Watches in Texas, 2021Tornado Watches in Arkansas, 2021Tornado Watches in Oklahoma, 2021Every tornado watch in 2021

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.