Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 231953
NSHLOT

NEARSHORE MARINE FORECAST
National Weather Service Chicago/Romeoville IL
253 PM CDT Mon Oct 23 2017

For waters within five nautical miles of shore on Lake Michigan

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the waves, along with the
average height of the highest 10 percent of the waves which will
occasionally be encountered.

LMZ740>742-240315-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-
253 PM CDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...
...GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...Northwest winds 10 to 20 kt becoming west and increasing
to 15 to 25 kt late. Rain showers likely in the evening, then
showers after midnight. Waves 3 to 5 ft subsiding to 2 to 4 ft in
the late evening and overnight.
.TUESDAY...West winds to 30 kt increasing to gales to 35 kt in the
afternoon. Rain showers. Waves 2 to 4 ft building to 3 to 5 ft in
the afternoon.
.TUESDAY NIGHT...Northwest gales to 35 kt becoming west to 30 kt
after midnight. Rain showers likely in the evening. Waves 3 to
6 ft occasionally to 8 ft.
.WEDNESDAY...West winds 15 to 25 kt. Mostly sunny. Waves 3 to
5 ft subsiding to 2 to 4 ft in the afternoon.

$$

LMZ743>745-240315-
Calumet Harbor to Gary-Gary to Burns Harbor-
Burns Harbor to Michigan City-
253 PM CDT Mon Oct 23 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
...GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...North winds 20 to 25 kt becoming northwest 15 to 25 kt
this evening. Chance of showers in the evening, then showers
after midnight. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...West winds to 30 kt increasing to gales to 35 kt in
the afternoon. Rain showers. Waves 4 to 7 ft occasionally to 9 ft
building to 6 to 9 ft occasionally to 12 ft in the afternoon.
.TUESDAY NIGHT...West gales to 35 kt diminishing to 30 kt after
midnight. Rain showers in the evening, then slight chance of
showers after midnight. Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds 15 to 25 kt. Partly sunny. Waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft in the afternoon.

$$

KJB



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