SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
946 AM CDT SAT AUG 20 2011
MCHENRY IL-LAKE IL-COOK IL-
946 AM CDT SAT AUG 20 2011
…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
COOK…SOUTHERN LAKE AND SOUTHEASTERN MCHENRY COUNTIES UNTIL 1030 AM
CDT…
AT 943 AM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL…AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM VENETIAN VILLAGE TO GRAYSLAKE TO
WAUCONDA TO HAWTHORN WOODS TO BARRINGTON…MOVING EAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE…
GAGES LAKE…BARRINGTON…LAKE ZURICH…MUNDELEIN…LIBERTYVILLE…
VERNON HILLS…LONG GROVE…PARK CITY…PALATINE…NORTH CHICAGO…
BUFFALO GROVE…LINCOLNSHIRE…LAKE FOREST…RIVERWOODS…
WHEELING…DEERFIELD…HIGHLAND PARK…NORTHBROOK…GLENCOE AND
WINNETKA.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR…LARGE HAIL…DEADLY LIGHTNING…AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.
Radar at 10:00 a.m. indicates intensifying thunderstorms moving from west to east with severe thunderstorms likely passing Arlington Heights from 10:05 to 10:20 a.m.