

265 

WWUS20 KWNS 282027

SEL1

SPC WW 282027

KSZ000-OKZ000-TXZ000-290400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 151

NWS Storm Prediction Center Norman OK

330 PM CDT Tue Apr 28 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  A small part of south central and southeast Kansas

  Much of central Oklahoma

  Extreme northwest Texas



* Effective this Tuesday afternoon and evening from 330 PM until

  1100 PM CDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 80

    mph likely

  Scattered large hail and isolated very large hail events to 3

    inches in diameter likely

  A tornado or two possible



SUMMARY...Rapid thunderstorm development is expected soon along a

cold front in south central Kansas.  The initial storms could be

supercells with an attendant threat for very large hail.  The storms

will tend to grow upscale this evening and back-build to the

southwest, likely affecting the Oklahoma City area close to 7p.

Aside from the large hail threat, increasingly widespread damaging

winds, some significant, are expected across central and south

central Oklahoma through late evening/early tonight.



The severe thunderstorm watch area is approximately along and 105

statute miles north and south of a line from 20 miles east of

Chandler OK to 30 miles north northwest of Fort Sill OK. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for 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. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 150...



AVIATION...A few severe thunderstorms with hail surface and aloft to

3 inches. Extreme turbulence and surface wind gusts to 70 knots. A

few cumulonimbi with maximum tops to 600. Mean storm motion vector

32025.



...Thompson

