

790 

WWUS20 KWNS 122236

SEL6

SPC WW 122236

AZZ000-130600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 336

NWS Storm Prediction Center Norman OK

440 PM MDT Sun Aug 12 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and southern Arizona



* Effective this Sunday afternoon from 440 PM until Midnight MDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible



SUMMARY...Storm clusters should develop west-southwest off the

Mogollon Rim across parts of the Gila Valley this evening,

potentially including the Phoenix metro area. Strong to severe wind

gusts are the main hazard.



The severe thunderstorm watch area is approximately along and 70

statute miles north and south of a line from 80 miles west northwest

of Gila Bend AZ to 70 miles east northeast of Phoenix AZ. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU6).



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.



&&



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

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

few cumulonimbi with maximum tops to 500. Mean storm motion vector

07025.



...Grams

