More on the Tornado Watch and possible severe weather headed our way

 

Radar image showing potential severe weather headed into our area

From the National Weather Service:

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 123
NWS STORM PREDICTION CENTER NORMAN OK
935 AM EDT THU APR 18 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
EASTERN ILLINOIS
CENTRAL AND EASTERN INDIANA
SOUTHERN LOWER MICHIGAN
NORTHWEST OHIO OHIO
LAKE MICHIGAN

* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 935 AM UNTIL
500 PM EDT.

…THIS IS A PARTICULARLY DANGEROUS SITUATION…

* PRIMARY THREATS INCLUDE…
SEVERAL INTENSE TORNADOES LIKELY
SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 80 MPH POSSIBLE
A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 65 MILES EAST NORTHEAST OF SOUTH BEND
INDIANA TO 60 MILES SOUTH SOUTHWEST OF TERRE HAUTE INDIANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 122…

DISCUSSION…DISCRETE SUPERCELL DEVELOPMENT IS POSSIBLE AHEAD OF
THE INTENSIFYING PRE-FRONTAL SQUALL LINE THAT WILL RAPIDLY MOVE
NORTHEASTWARD ACROSS THE WATCH AREA THIS MORNING. GIVEN THE
STRENGTH OF THE LOW-LEVEL SHEAR…A FEW TORNADOES ARE
POSSIBLE…BOTH IN SUPERCELLS AND WITHIN MESO VORTICES EMBEDDED
WITHIN THE LINE. ACTIVITY MAY BE CAPABLE OF PRODUCING STRONG TO
LOCALLY EXTREME WIND DAMAGE…REGARDLESS OF WHETHER TORNADIC OR
STRAIGHT LINE IN NATURE

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 24050.

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