

942 

WWUS20 KWNS 201252

SEL9

SPC WW 201252

FLZ000-CWZ000-202100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 439

NWS Storm Prediction Center Norman OK

755 AM EST Thu Dec 20 2018



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  East-central to west-central and southwest Florida

  Coastal Waters



* Effective this Thursday morning and afternoon from 755 AM until

  400 PM EST.



* Primary threats include...

  A few tornadoes likely

  Scattered damaging wind gusts to 70 mph likely



SUMMARY...Bands of thunderstorms should cross the watch area through

mid-afternoon.  This activity will offer sporadic tornado and

damaging-wind threats in a favorable shear regime, as the inflow air

mass gradually destabilizes.



The tornado watch area is approximately along and 65 statute miles

either side of a line from 35 miles south southeast of Sarasota FL

to 25 miles north northeast of Melbourne FL. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU9).



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.



&&



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

surface and aloft to 0.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean

storm motion vector 22030.



...Edwards

