Tornado Watch 388

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 388
NWS STORM PREDICTION CENTER NORMAN OK
645 PM CDT THU MAY 29 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WEST CENTRAL AND SOUTHWEST IOWA
NORTHEAST KANSAS
EAST CENTRAL AND SOUTHEAST NEBRASKA
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 645 PM
UNTIL 200 AM CDT.
TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHEAST OF
TEKAMAH NEBRASKA TO 70 MILES SOUTH OF BEATRICE NEBRASKA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).
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 384
...
WW 385
...
WW
386
...
WW 387
...
DISCUSSION...SUPERCELL CLUSTERS OVER S CENTRAL NEB AND N CENTRAL KS
WILL SPREAD EWD THROUGH THE EVENING TOWARD NE KS/SE NEB/SW IA.
RECENT OBSERVATIONAL TRENDS AND SHORT TERM MODEL FORECASTS SUPPORT A
TENDENCY FOR UPSCALE GROWTH OF THE CONVECTION INTO A COUPLE OF MCS/S
...WITH AN INCREASING THREAT FOR DAMAGING WINDS THEREAFTER. UNTIL
THEN...THE THREAT FOR TORNADOES /POSSIBLY AN ISOLATED STRONG TORNADO
/ AND LARGE HAIL WILL CONTINUE WITH SUPERCELLS...GIVEN A RELATIVELY
MOIST BOUNDARY LAYER AND INCREASING LOW-LEVEL SHEAR THROUGH THE
EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26035.
...THOMPSON