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101 

WWUS20 KWNS 112347

SEL7

SPC WW 112347

NDZ000-SDZ000-120700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 247

NWS STORM PREDICTION CENTER NORMAN OK

645 PM CDT SAT JUN 11 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN NORTH DAKOTA

  NORTHWEST SOUTH DAKOTA



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 645 PM

  UNTIL 200 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2.5 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...THUNDERSTORMS NOW FORMING IN NW SD AND SE MT EXPECTED TO

GROW IN COVERAGE AND STRENGTH. SOME MAY INCLUDE SUPERCELLS AND OTHER

SUSTAINED STORMS CAPABLE OF VERY LARGE HAIL...DAMAGING WIND AND A

COUPLE TORNADOS.

AT THE MOMENT THE TORNADO THREAT IS EXPECTED TO REMAIN SOMEWHAT

LIMITED GIVEN COMPLEX STORM MODE. BUT WESTERN PARTS OF WATCH AND

PARTS OF SE MT MAY REQUIRE AN UPGRADE TO TORNADO IF STORM MODE

REMAINS MORE DISCRETE THAN NOW APPEARS LIKELY.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST

NORTHWEST OF DICKINSON NORTH DAKOTA TO 40 MILES SOUTH SOUTHEAST

OF BISMARCK NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 246...



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 21030.





...CORFIDI

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