Updates for September 4, 2012 storm:
Intensity of storm diminishing as indicated by radar since about 10:30 p.m. — Thunderstorm with high winds and lightning are still expected.
Outflow boundary passed through central Arlington Heights about 10:30 p.m.
Outflow boundary with gusting winds just about to entering northwest tip of Cook County at about 10:10 p.m. Winds in excess of 60 mph have hit Rockford.
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR…
BOONE COUNTY IN NORTH CENTRAL ILLINOIS…
NORTHWESTERN COOK COUNTY IN NORTHEAST ILLINOIS…
DE KALB COUNTY IN NORTH CENTRAL ILLINOIS…
NORTHERN DUPAGE COUNTY IN NORTHEAST ILLINOIS…
KANE COUNTY IN NORTHEAST ILLINOIS…
LAKE COUNTY IN NORTHEAST ILLINOIS…
NORTHERN LEE COUNTY IN NORTH CENTRAL ILLINOIS…
MCHENRY COUNTY IN NORTHEAST ILLINOIS…
OGLE COUNTY IN NORTH CENTRAL ILLINOIS…
WINNEBAGO COUNTY IN NORTH CENTRAL ILLINOIS…
* UNTIL 1045 PM CDT
* AT 939 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 11 MILES NORTH OF PADDOCK LAKE TO RICHMOND TO 5 MILES WEST OF
WOODSTOCK TO BELVIDERE TO STILLMAN VALLEY TO FORRESTON…AND MOVING
SOUTHEAST AT 45 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR…
PISTAKEE HIGHLANDS…OREGON…MCHENRY AND LAKEMOOR AROUND 950 PM
CDT.
VENETIAN VILLAGE…ROUND LAKE…PRAIRIE GROVE AND OAKWOOD HILLS
AROUND 955 PM CDT.
DIXON…WAUCONDA…WADSWORTH AND TOWER LAKES AROUND 1000 PM CDT.
ZION…WINTHROP HARBOR AND WEST DUNDEE AROUND 1005 PM CDT.
…HAIL 60MPH <.50IN
Instructions: WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. SEEK SHELTER IN A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS UNTIL THESE STORMS HAVE PASSED.
