

355 

WWUS20 KWNS 052303

SEL4

SPC WW 052303

NEZ000-060400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 334

NWS STORM PREDICTION CENTER NORMAN OK

605 PM CDT FRI JUN 5 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WEST CENTRAL NEBRASKA



EFFECTIVE THIS FRIDAY EVENING FROM 605 PM UNTIL 1100 PM CDT.



TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES WEST NORTHWEST OF

VALENTINE NEBRASKA TO 20 MILES EAST OF IMPERIAL NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 332...WW 333...



DISCUSSION...A CLUSTER OF SUPERCELL STORMS IS MOVING SLOWLY EASTWARD

OUT OF THE NEB PANHANDLE.  THESE STORMS WILL ENCOUNTER STRENGTHENING

LOW LEVEL WARM ADVECTION AND SHEAR DURING THE NEXT FEW HOURS...WHICH

MAY AID IN NEW DEVELOPMENT FARTHER EAST AND MAINTAIN SUPERCELL

STRUCTURES.  VERY LARGE HAIL AND ISOLATED TORNADOES WILL BE POSSIBLE

WITH THE STRONGEST CELLS.



AVIATION...TORNADOES AND 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 27025.





...HART

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