Severe Local Storm Watch and Watch Cancellation Msg
Issued by NWS

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WWUS20 KWNS 052149
SEL1
SPC WW 052149
NEZ000-SDZ000-060500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 391
NWS STORM PREDICTION CENTER NORMAN OK
450 PM CDT SUN JUL 5 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
  NORTHWEST AND NORTH CENTRAL NEBRASKA
  SOUTH CENTRAL SOUTH DAKOTA

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

* PRIMARY THREATS INCLUDE...
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
    INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  A TORNADO OR TWO POSSIBLE

SUMMARY...ISOLATED SUPERCELLS WILL CONTINUE TO DEVELOP ACROSS SRN SD
AND WRN NEB THE NEXT FEW HOURS...WITH THE RISK FOR ISOLATED VERY
LARGE HAIL...AND PERHAPS A TORNADO WITH STORMS INTERACTING WITH A
SURFACE FRONT IN THE AREA.  LATER THIS EVENING...STORM MERGERS AND
UPSCALE GROWTH SHOULD SUPPORT THE FORMATION OF ONE OR MORE CLUSTERS
THAT WILL SPREAD EWD...WITH AN ATTENDANT RISK FOR DAMAGING WINDS AND
HAIL.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST OF
ALLIANCE NEBRASKA TO 45 MILES SOUTH OF HURON SOUTH DAKOTA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).

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 390...

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 27020.


...THOMPSON


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