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WWUS20 KWNS 302304

SEL6

SPC WW 302304

MTZ000-NDZ000-NEZ000-SDZ000-WYZ000-310600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 546

NWS Storm Prediction Center Norman OK

505 PM MDT Tue Jul 30 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Eastern Montana

  Southwest North Dakota

  Northwest Nebraska

  Western South Dakota

  Eastern Wyoming



* Effective this Tuesday afternoon from 505 PM until Midnight

  MDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Isolated to widely scattered storms will continue to

increase and intensify early this evening, initially across eastern

portions of Montana and Wyoming into southwest South Dakota. The

environment will support supercells capable of large hail and

locally damaging winds as storms move generally southeastward across

the region through late evening.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 40 miles west northwest

of Sidney MT to 30 miles west of Alliance NE. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for 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. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 545...



AVIATION...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 500. Mean storm motion vector

30025.



...Guyer

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