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SEL8 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 558 NWS Storm Prediction Center Norman OK 150 PM MST Sun Jul 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and South-Central Arizona * Effective this Sunday afternoon and evening from 150 PM until 800 PM MST. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible SUMMARY...A broken linear cluster of thunderstorms will move southward through the afternoon into the evening across the Watch area. The stronger thunderstorm cores and associated thunderstorm outflow will be potentially capable of 60 to 75 mph gusts as this activity moves into the lower deserts. Marginally severe hail (diameter up to 1 inch) may accompany the stronger thunderstorms this afternoon near the Mogollon Rim. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 55 miles west southwest of Prescott AZ to 95 miles east southeast of Phoenix AZ. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). 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 inch. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 01015. ...Smith