

818 

WWUS20 KWNS 081915

SEL9

SPC WW 081915

MTZ000-090100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 399

NWS STORM PREDICTION CENTER NORMAN OK

115 PM MDT MON JUL 8 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHEAST MONTANA



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 115 PM UNTIL

  700 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER

    POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 100 MILES WEST

SOUTHWEST OF GLASGOW MONTANA TO 10 MILES EAST NORTHEAST OF SIDNEY

MONTANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 398...



DISCUSSION...AN INTENSE THUNDERSTORM OVER PHILLIPS COUNTY MT WILL

TRACK EASTWARD THROUGH THE AFTERNOON TODAY...POSING A RISK OF VERY

LARGE HAIL AND DAMAGING WINDS OVER THE WATCH AREA.  OTHER ISOLATED

STORMS MAY ALSO FORM IN THIS MODERATELY UNSTABLE AND FAVORABLY

SHEARED ENVIRONMENT.



AVIATION...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 27035.





...HART

