WATCHES: Severe Thunderstorm Watch Number 412

WWUS20 KWNS 131929
SEL2
SPC WW 131929
INZ000-KYZ000-TNZ000-140200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 412
NWS STORM PREDICTION CENTER NORMAN OK
325 PM EDT SAT JUL 13 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN INDIANA
CENTRAL AND EASTERN KENTUCKY
NORTHERN MIDDLE AND EASTERN TENNESSEE

* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 325 PM UNTIL
1000 PM EDT.

* PRIMARY THREATS INCLUDE...
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A FEW TORNADOES POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST
NORTHEAST OF LOUISVILLE KENTUCKY TO 75 MILES SOUTHWEST OF LONDON
KENTUCKY. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

&&

DISCUSSION...SCTD TSTMS...INCLUDING A FEW SUSTAINED STORMS AND
POSSIBLY TRANSIENT SUPERCELLS...EXPECTED TO PERSIST/INCREASE ACROSS
WW AREA IN ASSOCIATION WITH AREA OF GREATEST LOW-LVL DESTABILIZATION
BENEATH RETROGRESSING UPR LOW. UNUSUALLY COOL MID-LVL
TEMPS...MODERATE DEEP SHEAR...AND SUFFICIENT LOW-LVL DIRECTIONAL
SHEAR APPEAR PRESENT FOR STORMS TO POSE A RISK FOR SVR
HAIL...LOCALLY DMGG WIND...AND PERHAPS SHORT-LIVED TORNADOES.

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 450. MEAN STORM
MOTION VECTOR 16025.


...CORFIDI

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