Thursday, March 25, 2021

Nearshore Marine Forecast for McHenry Co., IL

<pre>677
FZUS53 KLOT 250941 CCA
NSHLOT

NEARSHORE MARINE FORECAST...CORRECTED
National Weather Service Chicago/Romeoville IL
441 AM CDT Thu Mar 25 2021

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>742-251600-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-
441 AM CDT Thu Mar 25 2021

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY
MORNING...

.TODAY...West winds 10 to 15 kt early diminishing to 5 to 10 kt
and becoming northeast in the mid morning, increasing to 10 to 15
kt in the early afternoon, then to 15 to 25 kt late in the
afternoon. Chance of rain in the afternoon. Waves 1 ft or less
building to 3 to 5 ft late in the afternoon.
.TONIGHT...North gales to 35 kt increasing to 45 kt gales in the
late evening. A few storm force gusts to 50 kt are possible
offshore overnight. Rain. Waves 4 to 6 ft occasionally to 8 ft
building to 10 to 14 ft occasionally to 18 ft after midnight.
.FRIDAY...Northwest winds to 30 kt becoming northeast 5 to 10 kt
in the afternoon. Chance of rain in the morning. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 3 to 5 ft in the late afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 kt. Slight chance of rain
after midnight. Waves 3 to 5 ft subsiding to 1 to 3 ft after
midnight.

$$

LMZ743>745-251600-
Calumet Harbor to Gary-Gary to Burns Harbor-
Burns Harbor to Michigan City-
441 AM CDT Thu Mar 25 2021

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY
MORNING...

.TODAY...West winds 10 to 15 kt early diminishing to 5 to 10 kt
and becoming northeast late in the morning, then increasing to 15
to 25 kt in the afternoon. Rain likely in the afternoon. Waves 1
ft or less building to 3 to 5 ft late in the afternoon.
.TONIGHT...Northeast gales to 35 kt becoming north gales to 45 kt
toward midnight. A few storm force gusts to 50 kt are possible
overnight. Rain. Waves 4 to 6 ft occasionally to 8 ft building to
12 to 16 ft occasionally to 21 ft after midnight.
.FRIDAY...Northwest gales to 35 kt early becoming north to northeast
winds 5 to 10 kt in the afternoon. Rain likely in the morning.
Waves 12 to 16 ft occasionally to 21 ft subsiding to 4 to 7 ft
occasionally to 9 ft in the late afternoon.
.FRIDAY NIGHT...East winds 5 to 10 kt becoming southeast. Partly
cloudy in the evening then becoming mostly cloudy. Waves 3 to 6 ft
occasionally to 8 ft subsiding to 1 to 3 ft after midnight.

$$

RC</pre>


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