WATCHES: Severe Thunderstorm Watch Number 623...resent

WWUS20 KWNS 162303
SEL3
SPC WW 162303
KSZ000-NEZ000-170500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 623...RESENT
NWS STORM PREDICTION CENTER NORMAN OK
505 PM MDT MON AUG 16 2010

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

NORTHWEST KANSAS
SOUTHWEST NEBRASKA AND THE EASTERN NEBRASKA PANHANDLE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 505 PM UNTIL
1100 PM MDT.

HAIL TO 1.5 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 45
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHEAST OF
ALLIANCE NEBRASKA TO 30 MILES SOUTH OF GOODLAND KANSAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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 619...WW 620...WW
621...WW 622...

DISCUSSION...SCATTERED THUNDERSTORMS ACROSS WRN NEB/NE CO SHOULD
CONTINUE TO SPREAD EWD THROUGH THE EVENING IN ADVANCE OF A MIDLEVEL
TROUGH OVERSPREADING WY/NW CO. A COUPLE OF CLUSTERS SHOULD EVOLVE
FROM THE ONGOING ACTIVITY...ESPECIALLY FROM NE CO INTO NW KS/SW
NEB...WHERE THE STRONGER INSTABILITY AND LOW-LEVEL STORM INFLOW WILL
BE MAINTAINED INTO EARLY TONIGHT. A FEW DAMAGING WIND AND LARGE
HAIL EVENTS WILL BE POSSIBLE.

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 500. MEAN STORM
MOTION VECTOR 26020.

...THOMPSON

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