

708 

WWUS20 KWNS 032230

SEL4

SPC WW 032230

MTZ000-040500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 544

NWS STORM PREDICTION CENTER NORMAN OK

430 PM MDT FRI JUL 3 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST MONTANA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 PM UNTIL

1100 PM MDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST

SOUTHWEST OF GLASGOW MONTANA TO 55 MILES NORTH OF SIDNEY MONTANA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 540...WW 541...WW

542...WW 543...



DISCUSSION...SEVERE STORMS IN SRN SASK WILL CONTINUE DROPPING SEWD

INTO NERN MT ALONG WEAK SURFACE COLD FRONT THIS EVENING WITH RISK OF

LARGE HAIL AND ISOLATED DAMAGING WINDS.  ISOLATED STRONG TO SEVERE

STORMS ARE ALSO POSSIBLE WITH DEVELOPMENT ALONG RESIDUAL SURFACE

BOUNDARIES ACROSS NERN MT.



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 29015.





...EVANS

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