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WWUS20 KWNS 311854

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DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-CWZ000-010400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 686

NWS Storm Prediction Center Norman OK

255 PM EDT Thu Oct 31 2019



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  District Of Columbia

  Maryland

  Pennsylvania

  Northern Virginia

  Eastern West Virginia Panhandle

  Coastal Waters



* Effective this Thursday afternoon from 255 PM until Midnight

  EDT.



* Primary threats include...

  A few tornadoes likely with a couple intense tornadoes possible

  Widespread damaging winds likely with isolated significant gusts

    to 75 mph possible



SUMMARY...Fast-moving squall line over West Virginia should

intensify and elongate as it pushes to the east of the Appalachians.

The risk for damaging winds and embedded tornadoes will increase

through early to mid evening, before waning later tonight.



The tornado watch area is approximately along and 90 statute miles

east and west of a line from 60 miles west southwest of Washington

DC to 30 miles north of State College PA. For a complete depiction

of the watch see the associated watch outline update (WOUS64 KWNS

WOU6).



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 685...



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

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

gusts to 65 knots. A few cumulonimbi with maximum tops to 400. Mean

storm motion vector 22045.



...Grams

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