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WWUS20 KWNS 201641

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SPC WW 201641

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URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 18

NWS Storm Prediction Center Norman OK

1240 PM EDT Tue Mar 20 2018



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Southeast Georgia

  Coastal South Carolina

  Coastal Waters



* Effective this Tuesday afternoon and evening from 1240 PM until

  700 PM EDT.



* Primary threats include...

  A few tornadoes and a couple intense tornadoes possible

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Scattered to numerous storms are expected to develop

across the coastal plain this afternoon ahead of a cold front. Some

of these should be severe with a risk for tornadoes, large hail, and

damaging wind.



The tornado watch area is approximately along and 55 statute miles

east and west of a line from 35 miles south southeast of Waycross GA

to 55 miles north northeast of Charleston SC. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU8).



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 17...



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

surface and aloft to 2 inches. Extreme turbulence and surface wind

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

storm motion vector 25035.



...Grams

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