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105 

WWUS20 KWNS 090231

SEL3

SPC WW 090231

NDZ000-SDZ000-090900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 403

NWS STORM PREDICTION CENTER NORMAN OK

930 PM CDT MON JUL 8 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND EASTERN NORTH DAKOTA

  NORTH CENTRAL SOUTH DAKOTA



* EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 930 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE

  SEVERAL VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF

DEVILS LAKE NORTH DAKOTA TO 25 MILES EAST OF MOBRIDGE SOUTH

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 401...WW 402...



DISCUSSION...AN EVOLVING MCS CONTAINING EMBEDDED SEVERE

THUNDERSTORMS CONTINUES MOVING EAST-SOUTHEASTWARD ACROSS WESTERN

NORTH DAKOTA AND SOUTHEAST MONTANA...TOWARD CENTRAL NORTH DAKOTA AND

NORTHWEST SOUTH DAKOTA.  WITH A MODERATELY UNSTABLE AIRMASS AHEAD OF

THE ADVANCING SYSTEM AND 40 TO 50 KT MID-LEVEL FLOW SPREADING INTO

THE NORTHERN HIGH PLAINS...EXPECT THREATS FOR DAMAGING WINDS AND

HAIL TO CONTINUE SPREADING EAST-SOUTHEASTWARD OVER THE NEXT SEVERAL

HOURS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 29040.





...GOSS

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