

986 

WWUS20 KWNS 042151

SEL6

SPC WW 042151

NDZ000-SDZ000-050500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 466

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT SUN SEP 4 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEASTERN NORTH DAKOTA

  CENTRAL AND EASTERN SOUTH DAKOTA



* EFFECTIVE THIS SUNDAY AFTERNOON FROM 450 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE



SUMMARY...DURING THE NEXT FEW HOURS...SEVERE THUNDERSTORMS ARE

EXPECTED TO BOTH DEVELOP OVER WESTERN PARTS OF THE WATCH AREA AND

MOVE INTO IT FROM THE SOUTHWEST.  INCREASING STORM COVERAGE AND

POTENTIAL FOR DAMAGING GUSTS ARE EXPECTED...LASTING UNTIL AROUND

MIDNIGHT CDT IN THIS AREA.  SPORADIC LARGE HAIL ALSO IS

POSSIBLE...ESPECIALLY THROUGH EARLY EVENING.  SEE SPC MESOSCALE

DISCUSSION 1634 FOR INITIAL METEOROLOGICAL DETAILS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

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

SOUTHWEST OF CHAMBERLAIN SOUTH DAKOTA TO 85 MILES NORTH NORTHEAST

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

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 465...



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 550. MEAN STORM

MOTION VECTOR 23030.





...EDWARDS

