

684 

WWUS20 KWNS 040650

SEL6

SPC WW 040650

ILZ000-041100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 216

NWS STORM PREDICTION CENTER NORMAN OK

150 AM CDT WED JUN 4 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EAST-CENTRAL ILLINOIS



* EFFECTIVE THIS WEDNESDAY MORNING FROM 150 AM UNTIL 600 AM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 35

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES NORTHWEST

OF DECATUR ILLINOIS TO 35 MILES EAST OF CHAMPAIGN ILLINOIS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 212...WW 213...WW

214...WW 215...



DISCUSSION...A SMALL MESOSCALE CONVECTIVE SYSTEM WILL CONTINUE A

STEADY /45+ KT FORWARD MOVEMENT/ GENERAL EASTWARD PROGRESSION ACROSS

EAST-CENTRAL IL. THIS MCS WILL CONTINUE TO FAVOR A WARM FRONTAL

VICINITY AS MOISTENING OTHERWISE CONTINUES TO OCCUR NEAR/JUST ABOVE

THE SURFACE WITH AID A STRENGTHENING LOW-LEVEL JET. ISOLATED BOUTS

OF DAMAGING WINDS ARE THE PRIMARY CONCERN.



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 27045.





...GUYER

