WATCHES: Tornado Watch Number 524

WWUS20 KWNS 202010
SEL4
SPC WW 202010
IAZ000-KSZ000-MOZ000-NEZ000-210300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 524
NWS STORM PREDICTION CENTER NORMAN OK
310 PM CDT MON JUN 20 2011

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

PARTS OF SOUTHWEST IOWA
MUCH OF EASTERN KANSAS
SMALL PART OF NORTHWEST MISSOURI
PARTS OF SOUTHEAST NEBRASKA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 310 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 3 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHEAST OF
TEKAMAH NEBRASKA TO 45 MILES SOUTH SOUTHEAST OF WICHITA KANSAS.
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 523...

DISCUSSION...THUNDERSTORMS WILL ERUPT ALONG THE DRY LINE AS CAP HAS
ABOUT ERODED WITH THE ASCENT FROM THE APPROACHING STRONG TROUGH.
WITH MLCAPES AOA 2500 J/KG AND 50-60KT OF SHEAR...SUPERCELLS WILL BE
THE INITIAL MODE WHICH INCLUDES A VERY LARGE HAIL AND DAMAGING WIND
THREAT. TORNADOS ARE ALSO POSSIBLE WITH ANY SUPERCELL. STORMS WILL
GROW UPSCALE LATER THIS AFTERNOON WITH POTENTIAL INCREASING FOR A
SIGNIFICANT DAMAGING WIND THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.

...HALES

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