WW 459 SEVERE TSTM NE 012310Z – 020600Z
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 459 NWS STORM PREDICTION CENTER NORMAN OK 610 PM CDT THU AUG 1 2013 THE NWS STORM PREDICTION CENTER HAS ISSUED A * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH CENTRAL AND SOUTHEAST NEBRASKA * EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 610 PM UNTIL 100 AM CDT. * PRIMARY THREATS INCLUDE... SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH OF OMAHA NEBRASKA TO 25 MILES WEST NORTHWEST OF HASTINGS NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9). 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 454...WW 455...WW 456...WW 457...WW 458... DISCUSSION...THUNDERSTORM CLUSTER WITH EMBEDDED SUPERCELLS WILL CONTINUE TO MOVE SWD/SEWD THROUGH EARLY TONIGHT...POTENTIALLY REACHING THE KS/NEB BORDER REGION LATER TONIGHT. DOWNSTREAM INSTABILITY AND DEEP-LAYER SHEAR ARE BOTH SUFFICIENT FOR ORGANIZED SEVERE STORMS...WITH AN ATTENDANT RISK FOR DAMAGING WINDS AND LARGE HAIL. 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 550. MEAN STORM MOTION VECTOR 34025. ...THOMPSON
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0459.html
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