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225 

WWUS20 KWNS 240231

SEL7

SPC WW 240231

MTZ000-240900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 437

NWS STORM PREDICTION CENTER NORMAN OK

830 PM MDT WED JUL 23 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WEST-CENTRAL AND NORTHERN MONTANA



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 830 PM

  UNTIL 300 AM MDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTH

SOUTHWEST OF CUT BANK MONTANA TO 35 MILES EAST SOUTHEAST OF

GLASGOW MONTANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 435...WW 436...



DISCUSSION...SVR POTENTIAL FCST TO INCREASE THROUGH REMAINDER

EVENING AS TSTMS MOVE NEWD AND AGGREGATE OVER W-CENTRAL

MT...ULTIMATELY FOLLOWING ANTICYCLONICALLY CURVING PATH ACROSS NRN

MT TONIGHT.  ADDITIONAL/MORE ISOLATED SVR ALSO MAY OCCUR AHEAD OF

THAT ACTIVITY WITH CONVECTION INITIALLY BETWEEN GGW-HVR.  REF SPC

MESOSCALE DISCUSSION 1452 FOR INITIAL NEAR-TERM DETAILS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 25035.





...EDWARDS

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