WWUS20 KWNS 261729
SEL2
SPC WW 261729
ILZ000-INZ000-KYZ000-MOZ000-270300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 372
NWS STORM PREDICTION CENTER NORMAN OK
125 PM EDT WED JUN 26 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  SOUTHERN ILLINOIS
  SOUTHERN INDIANA
  WESTERN AND CENTRAL KENTUCKY
  SOUTHEAST MISSOURI MISSOURI

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 125 PM
  UNTIL 1100 PM EDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES SOUTHWEST OF
MOUNT VERNON ILLINOIS TO 45 MILES EAST SOUTHEAST OF LOUISVILLE
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...A PERSISTENT CLUSTER OF THUNDERSTORMS NOW SPREADING
INTO SOUTHERN INDIANA APPEARS LIKELY TO INTENSIFY DURING THE NEXT
FEW HOURS...AS IT BECOMES INCREASINGLY ROOTED IN A MOIST BOUNDARY
LAYER AIR MASS CHARACTERIZED BY LARGE CAPE.  SUPPORTED BY MID-LEVEL
FORCING ASSOCIATED WITH A WEAK MID-LEVEL IMPULSE...AND LOWER/MID
TROPOSPHERIC WARM ADVECTION TO ITS SOUTH AND WEST...THE GRADUAL
UPSCALE GROWTH OF A LARGE MESOSCALE CONVECTIVE SYSTEM APPEAR
POSSIBLE THIS AFTERNOON.  AS ASSOCIATED COLD POOLS CONSOLIDATE AND
DEEPEN...MODEST WESTERLY DEEP LAYER MEAN FLOW WILL AID EAST
SOUTHEASTWARD PROPAGATION...ACCOMPANIED BY AN INCREASING RISK FOR
POTENTIALLY DAMAGING WIND GUSTS.

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 600. MEAN STORM
MOTION VECTOR 27030.


...KERR