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131 

WWUS20 KWNS 140643

SEL4

SPC WW 140643

NDZ000-SDZ000-141300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 414

NWS STORM PREDICTION CENTER NORMAN OK

140 AM CDT SUN JUL 14 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEASTERN NORTH DAKOTA

  NORTH-CENTRAL AND NORTHEASTERN SOUTH DAKOTA



* EFFECTIVE THIS SUNDAY MORNING FROM 140 AM UNTIL 800 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

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

ABERDEEN SOUTH DAKOTA TO 85 MILES NORTH OF ABERDEEN SOUTH DAKOTA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



DISCUSSION...BOWING COMPLEX OF TSTMS THAT PRODUCED MEASURED 55 KT

GUST AT MBG HAS DEVELOPED REAR-INFLOW JET AND EVIDENCE OF ENOUGH

COLD-POOL ORGANIZATION TO WARRANT WW FOR ORGANIZED SVR-WIND THREAT

AS IT PROCEEDS EWD.  SOME NWD AND/OR SWD EXPANSION ALSO IS POSSIBLE.

COMPLEX SHOULD MOVE THROUGH FAVORABLY MOIST/UNSTABLE AIR MASS OVER

WW AREA...WITH SFC DEW POINTS UPPER 60S TO MID 70S F...BEFORE

ENCOUNTERING MARKEDLY LOWER THETAE E OF I-29 CORRIDOR.



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 550. MEAN STORM

MOTION VECTOR 24030.





...EDWARDS

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