WATCHES: Severe Thunderstorm Watch Number 542

WWUS20 KWNS 032153
SEL2
SPC WW 032153
KSZ000-NEZ000-040500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 542
NWS STORM PREDICTION CENTER NORMAN OK
455 PM CDT FRI JUL 3 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

NORTHERN KANSAS
CENTRAL AND SOUTHEAST NEBRASKA

EFFECTIVE THIS FRIDAY AFTERNOON FROM 455 PM UNTIL MIDNIGHT CDT.

HAIL TO 2 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 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTH OF
IMPERIAL NEBRASKA TO 5 MILES EAST NORTHEAST OF FALLS CITY
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 540...WW 541...

DISCUSSION...SLY LLJ WILL INCREASE ACROSS NERN KS THIS EVENING AHEAD
OF SHORTWAVE TROUGH SHIFTING ACROSS THE CENTRAL HIGH PLAINS. STORMS
WILL BE CAPABLE OF LARGE HAIL AND ISOLATED DAMAGING WINDS...WITH
OVERALL EVOLUTION INTO ONE OR MORE STRONG TO SEVERE MCSS ALONG NOSE
OF LLJ BY THE LATE EVENING.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 26020.

...EVANS

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