WATCHES: Tornado Watch Number 395

WWUS20 KWNS 291731
SEL5
SPC WW 291731
INZ000-MIZ000-OHZ000-LEZ000-LHZ000-LMZ000-300000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 395
NWS STORM PREDICTION CENTER NORMAN OK
130 PM EDT SUN MAY 29 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

NORTHERN INDIANA
SOUTHERN LOWER MICHIGAN
NORTHWEST OHIO
LAKE ERIE
LAKE HURON
LAKE MICHIGAN

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 800
PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 10 MILES NORTH NORTHWEST OF
VALPARAISO INDIANA TO 25 MILES EAST SOUTHEAST OF MOUNT CLEMENS
MICHIGAN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 394...

DISCUSSION...A FAST-MOVING BOW ECHO COMPLEX OVER NORTHERN IL WILL
TRACK RAPIDLY EASTWARD AT 45-50 KNOTS ACROSS THE WATCH AREA TODAY.
A WIDESPREAD DAMAGING WIND EVENT /DERECHO/ IS POSSIBLE. RAPID
DESTABILIZATION HAS OCCURRED AHEAD OF THE BOW AS THE WARM FROM
RETREATS... SUGGESTING BOW MAY MAINTAIN INTENSITY FOR SEVERAL MORE
HOURS. STRENGTHENING LOW LEVEL WINDS AND PROXIMITY OF WARM FRONT...
COUPLED WITH HIGH LEVEL OF MESOSCALE ORGANIZATION OF BOW SUPPORTS A
THREAT OF QLCS TORNADOES ALONG THE BOW...AS WELL AS ISOLATED
SUPERCELLS AHEAD OF THE BOW.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25045.

...HART

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