

040 

WWUS20 KWNS 010200

SEL0

SPC WW 010200

ILZ000-INZ000-LMZ000-010800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 380

NWS STORM PREDICTION CENTER NORMAN OK

900 PM CDT MON JUN 30 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHERN AND CENTRAL ILLINOIS

  NORTHWESTERN INDIANA

  LAKE MICHIGAN



* EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 900 PM

  UNTIL 300 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 100 MILES NORTHEAST OF

MARSEILLES ILLINOIS TO 35 MILES SOUTHWEST OF PEORIA ILLINOIS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 375...WW 376...WW

377...WW 378...WW 379...



DISCUSSION...LINE OF STORMS WITH WILL CONTINUE THROUGH NRN IL...NRN

IN AND THE GREAT LAKES REGION WHERE THE ATMOSPHERE REMAINS

MODERATELY TO STRONGLY UNSTABLE AND WHERE VERTICAL SHEAR IS

SUFFICIENT TO SUPPORT ORGANIZED STORM STRUCTURES.



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 27045.





...DIAL

