

060 

WWUS20 KWNS 150156

SEL5

SPC WW 150156

MTZ000-150800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 705

NWS STORM PREDICTION CENTER NORMAN OK

800 PM MDT FRI AUG 14 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN MONTANA



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 800 PM

UNTIL 200 AM 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 95

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH OF

MILES CITY MONTANA TO 55 MILES NORTH NORTHEAST OF GLASGOW

MONTANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 702...WW 703...WW 704...



DISCUSSION...ISOLATED SEVERE STORMS WILL CONTINUE TO TRACK EASTWARD

ACROSS EASTERN MT FOR ANOTHER SEVERAL HOURS...IN ADVANCE OF

APPROACHING UPPER TROUGH.  EASTERLY LOW LEVEL WINDS AND SUFFICIENT

INSTABILITY/SHEAR WILL MAINTAIN A RISK OF SUPERCELLS/BOWS WITH

DAMAGING WINDS AND LARGE HAIL POSSIBLE.



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 450. MEAN STORM

MOTION VECTOR 24035.





...HART

