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WWUS20 KWNS 130254

SEL2

SPC WW 130254

ILZ000-INZ000-LMZ000-130600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 412

NWS STORM PREDICTION CENTER NORMAN OK

950 PM CDT SAT JUL 12 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  NORTHERN ILLINOIS

  NORTHWEST INDIANA

  LAKE MICHIGAN



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 950 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  A COUPLE TORNADOES POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES WEST NORTHWEST OF

BENTON HARBOR MICHIGAN TO 40 MILES SOUTHWEST OF PEORIA ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 411...



DISCUSSION...WDLY SCTD TSTMS/TSTM CLUSTERS IN NW IL EXPECTED TO

CONTINUE E ACROSS THE REMAINDER OF NRN IL THROUGH EARLY SUN. WHILE

MID-LVL LAPSE RATES WILL REMAIN MODEST...SUFFICIENT SFC-BASED

BUOYANCY APPEARS PRESENT TO SUPPORT CONTINUED REDEVELOPMENT OF STORM

UPDRAFTS EWD INTO THE CHICAGO AREA. STRENGTH OF LOW-LVL

SHEAR...QUALITY OF LOW-LVL MOISTURE...AND SMALL TEMPERATURE-DEWPOINT

SPREADS SUGGEST A RISK FOR OCCASIONAL LOW-LVL MESOCYCLONES/POSSIBLE

TORNADOES...IN ADDITION TO SMALL BOWING SEGMENTS WITH DMGG WIND.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 28035.





...CORFIDI

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