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379 

WWUS20 KWNS 270638

SEL5

SPC WW 270638

ILZ000-KSZ000-MOZ000-271400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 565

NWS STORM PREDICTION CENTER NORMAN OK

135 AM CDT MON JUN 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN ILLINOIS

       NORTHERN AND EASTERN KANSAS

       NORTHERN AND CENTRAL MISSOURI



EFFECTIVE THIS MONDAY MORNING FROM 135 AM UNTIL 900 AM CDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF

MANHATTAN KANSAS TO 30 MILES EAST SOUTHEAST OF MATTOON ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

TORNADO WATCH NUMBER 560...SEVERE THUNDERSTORM WATCH NUMBER 561.

WATCH NUMBER 560 561 WILL NOT BE IN EFFECT AFTER 135 AM CDT.

CONTINUE...WW 562...WW 564...



DISCUSSION...NUMEROUS CLUSTERS OF SUSTAINED STORMS/SUPERCELLS

EXPECTED TO PERSIST THROUGH LATER THIS MORNING ACROSS PARTS OF THE

LWR MO AND MID MS VLYS AS STRONG LOW LVL WAA/MOISTURE TRANSPORT /PER

65 KT SSWLY LLJ AT ICT AND 850 MB DEWPOINT NEAR 20C AT TOP/ CONTINUE

ALONG/ATOP OUTFLOW BOUNDARY ELONGATING W-E FROM NE KS TO CNTRL IL.

ASCENT AHEAD OF LOW AMPLITUDE IMPULSE IN MODERATE WLY MID LVL FLOW

AND CONTINUING PRESENCE OF EML SUGGEST LIKELIHOOD FOR CONTINUED

REDEVELOPMENT OF FORWARD-PROPAGATING SEGMENTS/BOWS WITH DMGG

WIND/POSSIBLE BRIEF TORNADOES FROM ERN MO INTO CNTRL IL...AND MAINLY

LARGE HAIL/LOCALLY DMGG WIND WITH MORE DISCRETE ACTIVITY FARTHER W

INTO ERN KS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 28035.





...CORFIDI

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