

973 

WWUS20 KWNS 102356

SEL3

SPC WW 102356

ILZ000-INZ000-MOZ000-110700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 93

NWS STORM PREDICTION CENTER NORMAN OK

655 PM CDT WED APR 10 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL ILLINOIS

       CENTRAL AND NORTHERN INDIANA

       EAST CENTRAL MISSOURI



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 655 PM

UNTIL 200 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES EAST

NORTHEAST OF MUNCIE INDIANA TO 40 MILES SOUTH SOUTHWEST OF QUINCY

ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 88...WW 89...WW 90...WW

91...WW 92...



DISCUSSION...SEVERAL WAVES OF TSTMS...MAINLY ELEVATED...EXPECTED TO

MOVE/DEVELOP E/NE ACROSS WATCH AREA THROUGH EARLY THU IN ZONE OF

STRENGTHENING WAA/MOISTURE TRANSPORT ATOP SHALLOW COOL AIR DOME N OF

WSW-ENE STNRY FRONT. WHILE LOW-LVL SSWLY FLOW LIKELY WILL INCREASE

AS JET STREAK NOW IN SE QUADRANT OF SRN PLNS UPR TROUGH CONTINUES

NEWD...NWD MOTION OF BOUNDARY SHOULD BE RETARDED BY OUTFLOW FROM

EXISTING ELEVATED STORMS. OVERALL SETUP APPEARS FAVORABLE FOR

SLIGHTLY ELEVATED SUSTAINED STORMS/SUPERCELLS THAT MAY EVOLVE INTO

LEWPS...POSING A RISK FOR SVR HAIL/WIND AND PERHAPS AN ISOLD

TORNADO...DESPITE SHALLOW NEAR-SFC LATER.



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 24040.





...CORFIDI

