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FZUS63 KMQT 161452
Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
952 AM EST Tue Jan 16 2018
Waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. Occasional wave height is the
average of the highest 1/10 of the wave spectrum.
.SYNOPSIS...A 30.2 inch low over the eastern Great Lakes will
lift northeast while filling to 30.4 inches this afternoon.
Tonight through Wednesday night, Lake Superior will be between a
29.6 inch low pressure over far southern Hudson Bay and a 30.7
inch high pressure over the Middle Mississippi Valley. A 29.8 inch
trough will then drift from northern Ontario to the Upper Great
Lakes Thursday into Friday. A 29.3 inch low pressure will then
develop across southern Manitoba Friday afternoon and track
eastward to central Quebec by Saturday evening.
Superior West...Gale and Heavy Freezing Spray Warnings in
effect...11710 11630 12640 11642 13552. Heavy freezing spray
overnight and Wednesday morning. Waves 2 to 4 feet building to 8
to 11 feet tonight. Waves 8 to 12 feet Wednesday morning.
Superior North Central...Gale and Heavy Freezing Spray Warnings
in effect...11820 11720 11630 11640 11652 13662. Waves 2 to 4
feet building to 10 to 13 feet tonight. Waves 10 to 14 feet
Superior South Central...Gale Warning in effect...11820 12730
12640 11641 12651. Scattered snow showers this afternoon.
Waves 2 to 5 feet building to 4 to 7 feet tonight. Waves 5 to 8
feet Wednesday morning.
Superior East...Gale Warning in effect...11120 11810 11720 11630
11640 11650 11550 11650. Scattered snow showers late this
afternoon. Freezing spray after midnight. Scattered snow showers
through the early overnight. Waves 1 to 4 feet building to 6 to 9
feet tonight. Waves 7 to 11 feet Wednesday morning.
Experimental modernized open lake forecast is available online at
Graphical marine forecasts are available online at: