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960 

WWUS20 KWNS 250624

SEL6

SPC WW 250624

IAZ000-ILZ000-MOZ000-251300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 366

NWS STORM PREDICTION CENTER NORMAN OK

120 AM CDT WED MAY 25 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR SOUTHEAST IOWA

       WESTERN ILLINOIS

       EASTERN AND SOUTHERN MISSOURI



EFFECTIVE THIS WEDNESDAY MORNING FROM 120 AM UNTIL 800 AM CDT.



TORNADOES...HAIL TO 1.5 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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF QUINCY

ILLINOIS TO 20 MILES SOUTH SOUTHEAST OF WEST PLAINS MISSOURI.

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 363...WW 364...WW 365...



DISCUSSION...TSTMS POSING A THREAT FOR ISOLD TORNADOES...DMGG

WIND...AND HAIL EXPECTED TO CONTINUE MOVING/DEVELOPING NEWD FROM NRN

AR AND S CNTRL MO INTO ERN MO LATER THIS MORNING...IN TANDEM WITH

ASSOCIATED VORT LOBE/STRENGTHENING WIND FIELD ROTATING AROUND BASE

OF KS UPR LOW.  FARTHER N...SFC-BASED INSTABILITY WILL BE MORE

LIMITED...BUT INCREASING UPR LVL FORCING FOR ASCENT AND LOW LVL

UPLIFT ALONG STALLED W-E BOUNDARY MAY SUPPORT AN ISOLD SVR THREAT

OVER SE IA AND ADJACENT PARTS OF NE MO/WRN IL.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 22035.





...CORFIDI

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