[LeArc] Tornado Watch till 12am

[Duane Whittingham]

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 185
NWS STORM PREDICTION CENTER NORMAN OK
520 PM CDT FRI APR 14 2006

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

EXTREME SOUTHEAST IOWA
MUCH OF CENTRAL AND NORTHERN ILLINOIS
EXTREME NORTHWEST INDIANA
LAKE MICHIGAN

EFFECTIVE THIS FRIDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT CDT.

TORNADOES...HAIL TO 3 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES WEST NORTHWEST OF
MEIGS FIELD ILLINOIS TO 35 MILES SOUTH SOUTHEAST OF SPRINGFIELD
ILLINOIS.  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...<http://www.spc.noaa.gov/products/watch/ww0184.html>WW 
184...

DISCUSSION...LOW LEVELS ARE RECOVERING IN WAKE OF EARLIER CONVECTION
ACROSS IL.  THUNDERSTORM DEVELOPMENT IS EXPECTED WITHIN THE NEXT 1-2
HOURS ALONG A COLD FRONT CROSSING THE MS RIVER INTO NW IL...AND
ALONG A RETREATING OUTFLOW BOUNDARY THAT EXTENDS NW-SE FROM NRN INTO
E CENTRAL IL.  A FEED OF STRONG INSTABILITY FROM THE SW AND 0-6 KM
BULK SHEAR IN EXCESS OF 40 KT WILL SUPPORT SUPERCELLS CAPABLE OF
PRODUCING VERY LARGE HAIL AND DAMAGING WINDS.  ADDITIONALLY...A FEW
TORNADOES MAY OCCUR WITH SUPERCELLS INVOF THE RETREATING OUTFLOW
BOUNDARY WHERE LOW-LEVEL MOISTURE AND SHEAR ARE SOMEWHAT ENHANCED
COMPARED TO THE OPEN WARM SECTOR ACROSS CENTRAL IL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 28030.


...THOMPSON

ILLINOIS COUNTIES INCLUDED ARE

BOONE                BUREAU              CARROLL
CASS                 CHAMPAIGN           CHRISTIAN
CLARK                CLAY                COLES
COOK                 CRAWFORD            CUMBERLAND
DEKALB               DE WITT             DOUGLAS
DUPAGE               EDGAR               EFFINGHAM
FORD                 FULTON              GRUNDY
HANCOCK              HENDERSON           HENRY
IROQUOIS             JASPER              KANE
KANKAKEE             KENDALL             KNOX
LAKE                 LAWRENCE            LA SALLE
LEE                  LIVINGSTON          LOGAN
MACON                MARSHALL            MASON
MCDONOUGH            MCHENRY             MCLEAN
MENARD               MERCER              MORGAN
MOULTRIE             OGLE                PEORIA
PIATT                PUTNAM              RICHLAND
SANGAMON             SCHUYLER            SCOTT
SHELBY               STARK               TAZEWELL
VERMILION            WARREN              WHITESIDE
WILL                 WINNEBAGO           WOODFORD


-------------------------------------------------------
Amateur Radio Operator
Duane Whittingham - N9SSN
Skywarn, ARES/RACES, EMA/ESDA
Red Cross and SATERN