SPC Severe Thunderstorm Watch 357

WW 357 SEVERE TSTM KS NE OK TX 242235Z – 250600Z


URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 357
NWS STORM PREDICTION CENTER NORMAN OK
535 PM CDT MON JUN 24 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
  WESTERN AND CENTRAL KANSAS
  SOUTH CENTRAL NEBRASKA
  NORTHWEST OKLAHOMA AND THE OKLAHOMA PANHANDLE
  THE NORTHERN HALF OF THE TEXAS PANHANDLE

* EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 535 PM
  UNTIL 100 AM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE
  SEVERAL LARGE HAIL EVENTS WITH A FEW 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 15 MILES WEST
NORTHWEST OF HASTINGS NEBRASKA TO 20 MILES EAST SOUTHEAST OF
BORGER TEXAS.  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 354...WW 355...WW 356...

DISCUSSION...TSTMS EXPECTED TO INCREASE/DEVELOP OVER THE NEXT FEW
HOURS OVER WW AREA...IN ZONE OF DESTABILIZATION AND ASCENT
DOWNSTREAM FROM LOW AMPLITUDE UPR IMPULSE. COMBINATION OF STRONG
INSTABILITY...MODERATE WSWLY DEEP SHEAR...AND STEEP LOW-LVL LAPSE
RATES IN WEAKLY CONFLUENT ENVIRONMENT SUGGEST LIKELIHOOD FOR
CLUSTERS OF SUSTAINED STORMS/SUPERCELLS WITH SVR HAIL AND WIND.

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 24030.


...CORFIDI

via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0357.html