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970 

WWUS20 KWNS 090051

SEL6

SPC WW 090051

NEZ000-090600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 456

NWS STORM PREDICTION CENTER NORMAN OK

750 PM CDT FRI AUG 8 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHWEST AND CENTRAL NEBRASKA



* EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 750 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EITHER SIDE OF A LINE FROM 25 MILES NORTH NORTHWEST

OF IMPERIAL NEBRASKA TO 25 MILES NORTH OF GRAND ISLAND NEBRASKA.

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.



&&



DISCUSSION...A FEW MORE STORMS ARE DEVELOPING SOUTH OF AN OUTFLOW

BOUNDARY MOVING SEWD IN CENTRAL NEB...WITH OTHER STORMS MOVING EWD

INTO SWRN NEB.  ACTIVITY IMMEDIATELY NORTH OF THE OUTFLOW WILL HAVE

PRIMARILY A LARGE HAIL THREAT...WHILE STORMS ALONG/SOUTH OF THE

BOUNDARY MAY ALSO HAVE SEVERE WIND POTENTIAL AS THEY MOVE THROUGH AN

UNSTABLE /MLCAPE TO 2000 J PER KG/ AND MODERATELY SHEARED

ENVIRONMENT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27020.





...WEISS

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