

000 

WWUS20 KWNS 270813

SEL8

SPC WW 270813

NDZ000-SDZ000-271300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 758

NWS STORM PREDICTION CENTER NORMAN OK

315 AM CDT SUN JUL 27 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN NORTH DAKOTA

       CENTRAL AND NORTHEAST SOUTH DAKOTA



EFFECTIVE THIS SUNDAY MORNING FROM 315 AM UNTIL 800 AM CDT.



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 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST OF

MOBRIDGE SOUTH DAKOTA TO 25 MILES EAST NORTHEAST OF WATERTOWN

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 755...WW 756...WW 757...



DISCUSSION...SMALL BOWING MCS WILL CONTINUE RACING ESEWD ALONG

SYNOPTIC WARM FRONT ACROSS FAR SRN ND/NRN SD EARLY THIS

MORNING...WITH POTENTIAL FOR CONTINUED SEVERE WINDS.  OTHER ELEVATED

STORMS INCREASING AHEAD OF THIS ACTIVITY WILL POSE ADDITIONAL LARGE

HAIL/ISOLATED DAMAGING WIND THREAT AS EFFECTIVE SHEAR REMAINS

SUPPORTIVE OF SUPERCELLS.



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 29035.





...EVANS

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