

835 

WWUS20 KWNS 210125

SEL7

SPC WW 210125

ARZ000-OKZ000-210800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 677

NWS Storm Prediction Center Norman OK

825 PM CDT Sun Oct 20 2019



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Northwest Arkansas

  South-central and eastern Oklahoma



* Effective this Sunday night and Monday morning from 825 PM

  until 300 AM CDT.



* Primary threats include...

  A few tornadoes likely with a couple intense tornadoes possible

  Scattered damaging winds and isolated significant gusts to 80

    mph likely

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter likely



SUMMARY...Numerous supercells should consolidate into an extensive

squall line tonight. Large hail will be the main hazard initially,

with damaging winds becoming the predominant threat overnight.

Tornadoes  will be possible from supercells embedded within and just

ahead of the line. Greatest risk for a significant tornado should

exist across south-central to east-central and southeast Oklahoma.



The tornado watch area is approximately along and 75 statute miles

east and west of a line from 10 miles northeast of Grove OK to 15

miles southeast of Durant OK. 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 676...



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

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

gusts to 70 knots. A few cumulonimbi with maximum tops to 550. Mean

storm motion vector 25045.



...Grams

