WATCHES: Severe Thunderstorm Watch Number 363

WWUS20 KWNS 252009
SEL3
SPC WW 252009
ILZ000-INZ000-OHZ000-260300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 363
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT TUE JUN 25 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTH CENTRAL ILLINOIS
NORTHERN INDIANA
NORTHWEST OHIO

* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1000 PM CDT.

* 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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF
PEORIA ILLINOIS TO 25 MILES SOUTHEAST OF FORT WAYNE INDIANA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 361...WW 362...

DISCUSSION...STORM DEVELOPMENT IS NOW UNDERWAY ACROSS CENTRAL
ILLINOIS... PERHAPS AIDED BY FORCING ASSOCIATED WITH A SHORT WAVE
IMPULSE MIGRATING EAST OF THE MIDDLE MISSISSIPPI VALLEY. IN THE
PRESENCE OF THERMODYNAMIC PROFILES CHARACTERIZED BY FAIRLY STEEP
MID-LEVEL LAPSE RATES AND LARGE CAPE...DEEP LAYER WESTERLY FLOW AND
VERTICAL SHEAR IS SUFFICIENT TO SUPPORT THE UPSCALE GROWTH FROM
SUPERCELLS TO AN INCREASINGLY ORGANIZED...EASTWARD ADVANCING
MESOSCALE CONVECTIVE SYSTEM CAPABLE OF PRODUCING 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 500. MEAN STORM
MOTION VECTOR 27030.


...KERR

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