

560 

WWUS20 KWNS 212024

SEL8

SPC WW 212024

MTZ000-WYZ000-220300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 188

NWS STORM PREDICTION CENTER NORMAN OK

225 PM MDT SAT MAY 21 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EAST CENTRAL MONTANA

  NORTH CENTRAL WYOMING



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 225 PM UNTIL

  900 PM MDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

  A TORNADO OR TWO POSSIBLE



SUMMARY...FAST-MOVING THUNDERSTORMS WILL AFFECT PARTS OF EAST

CENTRAL MT AND NORTH CENTRAL WY THIS AFTERNOON AND EVENING.

DAMAGING WINDS AND LARGE HAIL ARE THE MAIN THREATS...ALTHOUGH AN

ISOLATED TORNADO IS ALSO POSSIBLE.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTHWEST OF

GLASGOW MONTANA TO 80 MILES SOUTHEAST OF BILLINGS MONTANA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 186...WW 187...



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 21035.





...HART

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