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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
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).
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
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