

000 

WWUS20 KWNS 092213

SEL2

SPC WW 092213

NDZ000-SDZ000-100600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 502

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT MON JUL 9 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL NORTH DAKOTA

       CENTRAL SOUTH DAKOTA



EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 515 PM

UNTIL 100 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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 70 MILES NORTHEAST OF

MINOT NORTH DAKOTA TO 45 MILES EAST SOUTHEAST OF PHILIP SOUTH

DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 495...WW 496...WW

497...WW 498...WW 499...WW 500...WW 501...



DISCUSSION...BANDS AND CLUSTERS OF THUNDERSTORMS OVER WESTERN ND/SD

WILL SPREAD RAPIDLY EASTWARD THIS EVENING AHEAD OF FAST-MOVING UPPER

TROUGH.  STRONG WIND FIELDS AND MODERATE INSTABILITY WILL CONTINUE

TO SUPPORT A RISK OF SUPERCELLS AND BOWS AND AN ATTENDANT THREAT OF

DAMAGING WINDS AND LARGE HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 27035.





...HART

