Severe Local Storm Watch and Watch Cancellation Msg
Issued by NWS

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000
WWUS20 KWNS 310045
SEL5
SPC WW 310045
SDZ000-310500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 425
NWS STORM PREDICTION CENTER NORMAN OK
745 PM CDT SAT JUL 30 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
  CENTRAL SOUTH DAKOTA

* EFFECTIVE THIS SATURDAY NIGHT FROM 745 PM UNTIL MIDNIGHT CDT.

* PRIMARY THREATS INCLUDE...
  ISOLATED SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE
  ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER
    POSSIBLE

SUMMARY...A PAIR OF SUPERCELLS THAT DEVELOPED QUICKLY ALONG A
NORTH-NORTHWEST/SOUTH-SOUTHEAST-ORIENTED BOUNDARY OVER NORTHERN
SOUTH DAKOTA SHOULD LAST LONG ENOUGH TO POSE A CONTINUING SEVERE
WIND/HAIL RISK TO NEAR THE PIERRE AREA AND PERHAPS FARTHER SOUTH.
SEE SPC MESOSCALE DISCUSSION 1451 FOR METEOROLOGICAL DETAILS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 35
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES WEST OF
CHAMBERLAIN SOUTH DAKOTA TO 55 MILES NORTH OF PIERRE SOUTH
DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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.

&&

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 35030.


...EDWARDS



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