

601 

WWUS20 KWNS 272333

SEL3

SPC WW 272333

ILZ000-MOZ000-280400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 23

NWS STORM PREDICTION CENTER NORMAN OK

535 PM CST SUN FEB 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST CENTRAL ILLINOIS

       NORTHEAST MISSOURI



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 535 PM UNTIL

1000 PM CST.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 80 MILES WEST

SOUTHWEST OF QUINCY ILLINOIS TO 75 MILES EAST 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 20...WW 21...WW 22...



DISCUSSION...CLUSTER OF STRONG/SEVERE THUNDERSTORMS ARE TRACKING

ALONG SURFACE WARM FRONT INTO NORTHEAST MO...AND EVENTUALLY INTO

CENTRAL IL.  STORMS ARE PRIMARILY ELEVATED...WITH SEVERE HAIL BEING

THE PRIMARY THREAT.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 24040.





...HART

