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WWUS20 KWNS 222248

SEL9

SPC WW 222248

AZZ000-230600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 539

NWS Storm Prediction Center Norman OK

350 PM MST Mon Jul 22 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern Arizona



* Effective this Monday afternoon and evening from 350 PM until

  1100 PM MST.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible



SUMMARY...One or two primary bands of thunderstorms are expected to

move westward to northwestward across the watch area through the

evening, offering the threat of severe gusts.  Isolated cells ahead

of the complex(es) also can produce localized severe downbursts.



The severe thunderstorm watch area is approximately along and 70

statute miles either side of a line from 25 miles northeast of

Tucson AZ to 30 miles west northwest of Gila Bend AZ. 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 538...



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

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

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

12035.



...Edwards

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