

864 

WWUS20 KWNS 271854

SEL4

SPC WW 271854

COZ000-NEZ000-WYZ000-280300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 264

NWS Storm Prediction Center Norman OK

1255 PM MDT Mon May 27 2019



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Northeastern Colorado

  Extreme southwestern Nebraska

  Southeastern Wyoming



* Effective this Monday afternoon and evening from 1255 PM until

  900 PM MDT.



* Primary threats include...

  A few tornadoes possible

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter likely

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Scattered supercell development is underway east of the

Front Range from roughly Cheyenne to Denver.  Storms should

intensify through the afternoon and spread east-northeastward along

a couple of different surface boundaries.  Very large hail and a

couple of tornadoes are expected, along with isolated damaging

winds.



The tornado watch area is approximately along and 60 statute miles

north and south of a line from 45 miles south of Cheyenne WY to 40

miles south southeast of Sidney NE. For a complete depiction of the

watch see the associated watch outline update (WOUS64 KWNS WOU4).



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 263...



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

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

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

storm motion vector 24020.



...Thompson

