LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
352 AM CDT MON OCT 29 2012

COOK-
352 AM CDT MON OCT 29 2012

…LAKESHORE FLOOD WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO
4 PM CDT WEDNESDAY…

* LAKE SHORE FLOODING…THE REMNANTS OF HURRICANE SANDY ARE
FORECAST TO MOVE ACROSS THE EASTERN GREAT LAKES FROM MONDAY
NIGHT THROUGH WEDNESDAY. DUE TO THE LARGE SIZE OF THIS STORM
SYSTEM…STRONG NORTHERLY WINDS OF 50 TO 60 MPH WILL OCCUR ON
LAKE MICHIGAN FOR A PROLONGED PERIOD FROM LATE MONDAY THROUGH
TUESDAY EVENING. AS A RESULT…WAVES ACROSS THE SOUTHERN END OF
THE LAKE ARE EXPECTED TO BUILD SIGNIFICANTLY…WITH WAVE HEIGHTS
OF 18 TO 23 FT LIKELY BY TUESDAY ALONG THE COOK COUNTY
SHORELINE.

* TIMING…WAVES ARE FORECAST TO QUICKLY BUILD BY LATE
TONIGHT…AND THESE LARGE WAVES WILL CONTINUE FOR A PROLONGED
PERIOD THROUGH WEDNESDAY AFTERNOON BEFORE CONDITIONS GRADUALLY
IMPROVE.

* IMPACTS…THESE LARGE WAVES WILL BATTER THE BEACHES AND
SHORELINES LEADING TO COASTAL EROSION AND FLOODING…AND COULD
RESULT IN SIMILAR IMPACTS TO THE STORM OF SEPTEMBER 2011. SOME
OF THE MORE VULNERABLE SPOTS ALONG THE LAKE SHORE…INCLUDING
THE CHICAGO LAKE SHORE BIKE PATH AND PORTIONS OF SOUTH LAKE
SHORE DRIVE…AND ANY PIERS AND BREAKWALLS THAT EXTEND INTO THE
LAKE…COULD BE SIGNIFICANTLY IMPACTED FROM THESE LARGE WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A LAKESHORE FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR
IMMINENT ALONG THE LAKE. RESIDENTS ON OR NEAR THE SHORE IN THE
WARNED AREA SHOULD BE ALERT FOR RISING WATER…AND TAKE
APPROPRIATE ACTION TO PROTECT LIFE AND PROPERTY.

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