

327 

WWUS20 KWNS 142300

SEL1

SPC WW 142300

OKZ000-TXZ000-150500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 331

NWS Storm Prediction Center Norman OK

600 PM CDT Wed Jun 14 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southwest Oklahoma

  West/southwest Texas



* Effective this Wednesday night from 600 PM until Midnight CDT.



* Primary threats include...

  Isolated very large hail events to 3 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Isolated strong to severe thunderstorms are expected to

develop near a dryline within a hot and relatively moist/unstable

environment. A few supercells capable of large hail and

severe-caliber wind gusts are expected this evening.



The severe thunderstorm watch area is approximately along and 55

statute miles east and west of a line from 35 miles north northwest

of Altus OK to 70 miles south southwest of Midland TX. 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 328...WW 329...WW 330...



AVIATION...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

29020.



...Guyer

