

595 

WWUS20 KWNS 181540

SEL0

SPC WW 181540

FLZ000-GAZ000-SCZ000-CWZ000-182200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 40

NWS Storm Prediction Center Norman OK

1140 AM EDT Thu Mar 18 2021



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  North Florida

  Eastern Georgia

  Southern South Carolina

  Coastal Waters



* Effective this Thursday morning and evening from 1140 AM until

  600 PM EDT.



* Primary threats include...

  A few tornadoes and a couple intense tornadoes possible

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...A broken line of thunderstorms should spread

east-northeast from south-central Georgia and the eastern Florida

Panhandle. Intensification is expected with the development of a few

embedded supercells this afternoon. Tornado and damaging wind are

the primary hazards.



The tornado watch area is approximately along and 60 statute miles

east and west of a line from 20 miles east of Orangeburg SC to 50

miles southwest of Jacksonville FL. For a complete depiction of the

watch see the associated watch outline update (WOUS64 KWNS WOU0).



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 39...



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

surface and aloft to 1.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean

storm motion vector 24035.



...Grams

