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WWUS20 KWNS 220049

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URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 17

NWS Storm Prediction Center Norman OK

650 PM CST Sat Jan 21 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Central and southern Alabama

  Western and central Florida Panhandle

  Small part of southeastern Mississippi

  Coastal Waters



* Effective this Saturday night and Sunday morning from 650 PM

  until 300 AM CST.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* Primary threats include...

  Several tornadoes and a few intense tornadoes likely

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Isolated very large hail events to 2.5 inches in diameter

    possible



SUMMARY...A cluster of storms now moving into extreme southwestern

Alabama is the first of what likely will be several areas of severe

weather moving across this watch overnight.  As a warm front moves

northward across the region, conditions will moisten and destabilize

considerably amidst strong vertical shear.  The resulting parameter

space is one often associated with long-lasting, intense tornadoes

rated EF2 or greater.



The tornado watch area is approximately along and 100 statute miles

north and south of a line from 80 miles north of Mobile AL to 50

miles south of Columbus GA. For a complete depiction of the watch

see the associated watch outline update (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Tornado Watch means conditions are favorable for

tornadoes and 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 15...WW 16...



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 2.5 inches. Extreme turbulence and surface wind

gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean

storm motion vector 25030.



...Edwards

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