

000 

WWUS20 KWNS 151604

SEL4

SPC WW 151604

ILZ000-MOZ000-152300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 274

NWS STORM PREDICTION CENTER NORMAN OK

1105 AM CDT TUE MAY 15 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL ILLINOIS

       EASTERN MISSOURI



EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1105 AM UNTIL 600

PM CDT.



HAIL TO 1.5 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST

NORTHEAST OF PEORIA ILLINOIS TO 45 MILES EAST SOUTHEAST OF VICHY

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...WIDESPREAD...LOOSELY ORGANIZED...THUNDERSTORMS ARE

EXPECTED TO CONTINUE INTENSIFYING LATE THIS MORNING AND EARLY THIS

AFTERNOON AS AIR MASS BECOMES MODERATELY UNSTABLE.  SHEAR WILL

REMAIN MODEST...BUT SHOULD STILL SUPPORT MULTICELL ORGANIZATION BY

LATER TODAY.  LARGE HAIL AND DAMAGING WINDS SHOULD ACCOMPANY THE

STRONGER CORES...WITH THREAT INCREASING AS STORMS BECOME MORE

ORGANIZED.



AVIATION...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 25020.





...EVANS



000 

WWUS20 KWNS 151604

SEL4

SPC WW 151604

ILZ000-MOZ000-152300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 274...RESENT

NWS STORM PREDICTION CENTER NORMAN OK

1105 AM CDT TUE MAY 15 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL ILLINOIS

       EASTERN MISSOURI



EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1105 AM UNTIL 600

PM CDT.



HAIL TO 1.5 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST

NORTHEAST OF PEORIA ILLINOIS TO 45 MILES EAST SOUTHEAST OF VICHY

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...WIDESPREAD...LOOSELY ORGANIZED...THUNDERSTORMS ARE

EXPECTED TO CONTINUE INTENSIFYING LATE THIS MORNING AND EARLY THIS

AFTERNOON AS AIR MASS BECOMES MODERATELY UNSTABLE.  SHEAR WILL

REMAIN MODEST...BUT SHOULD STILL SUPPORT MULTICELL ORGANIZATION BY

LATER TODAY.  LARGE HAIL AND DAMAGING WINDS SHOULD ACCOMPANY THE

STRONGER CORES...WITH THREAT INCREASING AS STORMS BECOME MORE

ORGANIZED.



AVIATION...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 25020.





...EVANS

