

933 

WWUS20 KWNS 031814

SEL8

SPC WW 031814

ILZ000-MOZ000-040100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 588

NWS STORM PREDICTION CENTER NORMAN OK

115 PM CDT SUN JUL 3 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL ILLINOIS

       EAST CENTRAL MISSOURI



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 115 PM UNTIL 800

PM 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 15 MILES SOUTHWEST

OF COLUMBIA MISSOURI TO 70 MILES EAST NORTHEAST OF MOUNT VERNON

ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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.



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INTENSIFY

THROUGH THE AFTERNOON IN VICINITY OF A SURFACE BOUNDARY EXTENDING

FROM CENTRAL MO INTO SOUTH CENTRAL IL.  ACTIVITY WILL ALSO LIKELY

REJUVENATE THIS AFTERNOON AHEAD OF AN MCV MOVING ACROSS MO.  WHILE

STEERING FLOW IS RATHER WEAK...HIGH MOISTURE AND CAPE VALUES SUGGEST

THE RISK OF MULTICELL STORMS CAPABLE OF WET MICROBURSTS AND SOME

HAIL.



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 27025.





...HART

