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000 

WWUS20 KWNS 020631

SEL8

SPC WW 020631

NEZ000-021400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 418

NWS STORM PREDICTION CENTER NORMAN OK

130 AM CDT MON JUN 2 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL NEBRASKA



EFFECTIVE THIS MONDAY MORNING FROM 130 AM UNTIL 900 AM CDT.



HAIL TO 2.5 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES WEST

NORTHWEST OF VALENTINE NEBRASKA TO 40 MILES SOUTHEAST OF NORTH

PLATTE NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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...SLIGHTLY ELEVATED SUPERCELLS THAT HAVE DEVELOPED ESE

INTO NW NEB OVER THE LAST TWO HOURS LIKELY WILL PERSIST AND SLOWLY

INTENSIFY AS THEY MOVE/DEVELOP FARTHER ESE ALONG 850-700 MB WARM

FRONT.  THE STORMS MAY INCREASE MORE MARKEDLY IN COVERAGE AND

STRENGTH TOWARD SUNRISE AND THEREAFTER OVER CNTRL OR S CNTRL NEB AS

THE ACTIVITY ENCOUNTERS RICHER PLUME OF 925-850 MB MOISTURE SURGING

NWD INTO THE REGION ALONG LLJ.



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 500. MEAN STORM

MOTION VECTOR 29030.





...CORFIDI

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