WATCHES: Severe Thunderstorm Watch Number 540

WWUS20 KWNS 042011
SEL0
SPC WW 042011
KSZ000-MOZ000-OKZ000-050300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 540
NWS STORM PREDICTION CENTER NORMAN OK
315 PM CDT FRI OCT 4 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN KANSAS
NORTHWEST MISSOURI
WESTERN AND NORTH CENTRAL OKLAHOMA

* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
1000 PM CDT.

* PRIMARY THREATS INCLUDE...
NUMEROUS LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL
EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE
NUMEROUS DAMAGING WIND GUSTS TO 70 MPH LIKELY
A FEW TORNADOES POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF
FALLS CITY NEBRASKA TO 30 MILES SOUTH OF ALTUS OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 539...

DISCUSSION...THUNDERSTORM DEVELOPMENT IS EXPECTED THIS AFTERNOON
ALONG A COLD FRONT OVER CENTRAL KS AND NORTHWEST OK...AS WELL AS
NEAR A DRYLINE OVER WESTERN OK. SUFFICIENT DEEP LAYER VERTICAL
SHEAR IS PRESENT FOR A RISK OF SEVERE THUNDERSTORMS INCLUDING A FEW
SUPERCELLS. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN
THREAT...ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT.

AVIATION...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 550. MEAN STORM
MOTION VECTOR 24030.


...HART

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