

093 

WWUS20 KWNS 212346

SEL5

SPC WW 212346

NEZ000-220500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 495

NWS STORM PREDICTION CENTER NORMAN OK

650 PM CDT WED AUG 21 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL NEBRASKA



* EFFECTIVE THIS WEDNESDAY NIGHT FROM 650 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES SOUTHWEST

OF MULLEN NEBRASKA TO 30 MILES SOUTH SOUTHEAST OF ONEILL

NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 494...



DISCUSSION...SCATTERED THUNDERSTORMS ARE DEVELOPING ALONG A

SLOW-MOVING FRONT IN CENTRAL NEB...AND ADDITIONAL STORM DEVELOPMENT

IS EXPECTED THROUGH THIS EVENING.  THOUGH VERTICAL WIND SHEAR IS

RATHER MODEST...STRONG INSTABILITY WILL SUPPORT A RISK FOR DAMAGING

GUSTS AND MARGINALLY SEVERE HAIL WITH THE STRONGER STORMS/CLUSTERS.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION

VECTOR 26020.





...THOMPSON

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