

824 

WWUS20 KWNS 240646

SEL4

SPC WW 240646

NDZ000-241200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 734

NWS STORM PREDICTION CENTER NORMAN OK

145 AM CDT MON AUG 24 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTH CENTRAL NORTH DAKOTA



EFFECTIVE THIS MONDAY MORNING FROM 145 AM UNTIL 700 AM CDT.



HAIL TO 1.5 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 75 MILES WEST

NORTHWEST OF GARRISON NORTH DAKOTA TO 80 MILES EAST OF MINOT

NORTH DAKOTA.  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 733...



DISCUSSION...A BOW ECHO OVER NORTHWEST ND WILL CONTINUE TO TRACK

EAST-NORTHEASTWARD FOR SEVERAL MORE HOURS ACROSS NORTH CENTRAL ND.

MEANWHILE...POTENTIAL EXISTS FOR ISOLATED STORMS TO FORM ALONG THE

TRAILING FLANK OF THE BOW.  DAMAGING WINDS AND HAIL WILL BE THE MAIN

THREATS WITH THESE STORMS THROUGH DAYBREAK.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25030.





...HART

