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119 

WWUS20 KWNS 261904

SEL6

SPC WW 261904

ILZ000-INZ000-MIZ000-OHZ000-LEZ000-LHZ000-LMZ000-270200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 216

NWS STORM PREDICTION CENTER NORMAN OK

305 PM EDT TUE APR 26 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ILLINOIS

       NORTHERN AND CENTRAL INDIANA

       MUCH OF LOWER MICHIGAN

       NORTHWEST OHIO

       LAKE ERIE

       LAKE HURON

       LAKE MICHIGAN



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL

1000 PM EDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF BAD AXE

MICHIGAN TO 20 MILES SOUTHWEST OF INDIANAPOLIS INDIANA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 213...WW 214...WW 215...



DISCUSSION...AS A SURFACE LOW CONTINUES TO DEVELOP NORTHEASTWARD

TOWARD LAKE MICHIGAN...RELATIVELY LOW TOPPED STORMS ARE EXPECTED TO

INCREASE THROUGH THE AFTERNOON AHEAD OF A COLD FRONT. AS THE AIRMASS

CONTINUES TO GRADUALLY DESTABILIZE...STRONG SOUTHWESTERLY DEEP

TROPOSPHERIC FLOW WILL SUPPORT THE DEVELOPMENT OF SOME

SUPERCELLS/ORGANIZED LINEAR CLUSTERS CAPABLE OF DAMAGING

WINDS...SEVERE HAIL...AND A FEW TORNADOES.



AVIATION...TORNADOES AND 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

400. MEAN STORM MOTION VECTOR 24040.





...GUYER/HART

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