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554 

WWUS20 KWNS 262147

SEL2

SPC WW 262147

NEZ000-270300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 302

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT SAT MAY 26 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL NEBRASKA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 450 PM UNTIL

1000 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST OF

MULLEN NEBRASKA TO 20 MILES SOUTHEAST OF ONEILL NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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 300...WW 301...



DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING ALONG RETREATING

WARM FRONT OVER WESTERN NEB.  THESE STORMS WILL LIFT NORTHEASTWARD

ACROSS THE WATCH AREA THIS EVENING.  STEEP LOW/MID LEVEL LAPSE RATES

AND MODERATE INSTABILITY...COMBINED WITH FAVORABLE DEEP LAYER

EFFECTIVE SHEAR WILL POSE A RISK OF A FEW SUPERCELLS.  LARGE HAIL

AND DAMAGING WINDS ARE POSSIBLE IN THE STRONGEST STORMS.



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 500. MEAN STORM

MOTION VECTOR 24025.





...HART

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