

410 

WWUS20 KWNS 222027

SEL9

SPC WW 222027

NMZ000-OKZ000-TXZ000-230300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 199

NWS Storm Prediction Center Norman OK

330 PM CDT Fri Jun 22 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Extreme northeastern New Mexico

  The Oklahoma Panhandle

  Much of the Texas Panhandle



* Effective this Friday afternoon and evening from 330 PM until

  1000 PM CDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph likely

  Scattered large hail likely with isolated very large hail events

    to 2.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms are developing across northeastern New

Mexico, and some of these storms should intensify while moving

east-southeastward toward the Texas and Oklahoma Panhandles.  The

storm environment will initially favor supercells with the potential

for very large hail.  Some upscale growth of storms is expected,

from either the initial New Mexico storms or new storms expected to

form in southeastern Colorado, and the convection should spread

east-southeastward as a larger cluster through late evening.

Damaging winds will become the main threat by this evening, while an

isolated tornado could occur with the initial supercells or later

storm interactions.



The severe thunderstorm watch area is approximately along and 100

statute miles east and west of a line from 30 miles northwest of

Guymon OK to 30 miles southwest of Borger TX. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU9).



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 197...WW 198...



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

2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A

few cumulonimbi with maximum tops to 550. Mean storm motion vector

29035.



...Thompson

