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WWUS20 KWNS 121907

SEL7

SPC WW 121907

COZ000-NEZ000-WYZ000-130200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 317

NWS Storm Prediction Center Norman OK

110 PM MDT Mon Jun 12 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Northeast Colorado

  Western Nebraska Panhandle

  Southeast Wyoming



* Effective this Monday afternoon and evening from 110 PM until

  800 PM MDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* Primary threats include...

  Several tornadoes and a few intense tornadoes likely

  Widespread large hail expected with scattered very large hail

    events to 4 inches in diameter likely

  Isolated significant damaging wind gusts to 75 mph possible



SUMMARY...Isolated intense supercell thunderstorms are expected to

develop across the watch area this afternoon.  Giant hail and strong

tornadoes will be possible in the most intense storms.



The tornado watch area is approximately along and 60 statute miles

east and west of a line from 50 miles north northeast of Douglas WY

to 55 miles southeast of Fort Collins CO. 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 316...



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

surface and aloft to 4 inches. Extreme turbulence and surface wind

gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean

storm motion vector 24030.



...Hart

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