

586 

WWUS20 KWNS 132241

SEL7

SPC WW 132241

NEZ000-140500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 487

NWS STORM PREDICTION CENTER NORMAN OK

540 PM CDT THU AUG 13 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WEST-CENTRAL NEBRASKA



* EFFECTIVE THIS THURSDAY AFTERNOON FROM 540 PM UNTIL MIDNIGHT

  CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...THUNDERSTORM COVERAGE HAS INCREASED IN A VERY MOIST AND

UNSTABLE  ENVIRONMENT SUITABLE FOR CONTINUED UPSCALE GROWTH...WITH

MULTIPLE SEVERE STORMS POSSIBLE THROUGH AT LEAST EARLY EVENING.

ACTIVITY SHOULD MOVE GENERALLY SOUTHWARD DOWN THE WATCH AREA AND

OFFER LARGE HAIL.  DAMAGING WIND MAY BECOME MORE PREVALENT AS

WELL...BEFORE STORMS WEAKEN LATE THIS EVENING.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH

NORTHWEST OF AINSWORTH NEBRASKA TO 35 MILES SOUTH SOUTHEAST OF

NORTH PLATTE NEBRASKA.  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.



&&



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 550. MEAN STORM

MOTION VECTOR 36030.





...EDWARDS

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