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Marine Forecast
FZUS63 KMQT 191502

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1002 AM EST Mon Feb 19 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 29.9 inch trough over eastern Lake Superior will 
be pushed off to the southeast today by a 30.5 inch high pressure
moving across northern Ontario. Secondary troughing of 29.8 
inches will push northeastward into the Western Great Lakes
Tuesday morning and reach southern Quebec Wednesday morning. A 
high pressure system of 30.6 inches will push towards the Great 
Lakes Wednesday afternoon and slowly shift into southern Quebec 
through the day Thursday. A weak 30.1 inch trough will pass 
across the western Great lakes on Friday followed by weak ridging
of 30.3 inches overnight.

Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
1002 AM EST Mon Feb 19 2018

Rest of Today - North winds 20 to 30 knots veering northeast. Freezing spray in the afternoon. A chance of snow and a slight chance of freezing drizzle late in the morning. Snow, possibly mixed with freezing rain in the afternoon. Waves 3 to 5 feet occasionally to 7 feet building to 7 to 10 feet occasionally to 13 feet.
Tonight - Northeast winds 20 to 30 knots. Heavy freezing spray and areas of blowing snow. Numerous snow showers, possibly mixed with freezing rain. Waves building to 7 to 11 feet occasionally to 14 feet. .TUESDAY...East winds 15 to 25 knots diminishing to 10 to 20 knots by late morning, then backing north by mid afternoon. Freezing spray in the morning. Freezing rain likely, possibly mixed with snow showers. Waves subsiding to 1 to 3 feet. .TUESDAY NIGHT...Northwest winds 15 to 25 knots. A chance of freezing rain in the evening. A chance of snow showers. Waves building to 3 to 6 feet occasionally to 8 feet. .WEDNESDAY...Northwest winds 10 to 20 knots backing west in the afternoon. Waves subsiding to calm to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 15 knots backing southwest after midnight. Waves calm to 2 feet. .THURSDAY...Southwest winds 5 to 15 knots backing south. Snow showers likely. Waves calm to 2 feet. .FRIDAY...West winds 5 to 15 knots backing southwest. A chance of snow showers. Waves calm to 2 feet. Note, wave height forecasts are for ice free areas. $$

US Forecasts are Public Domain and derived from the
National Weather Service - (IWIN) and the National Oceanic Atmospheric Administration (NOAA)
Canadian forecasts are obtained from and are copyright of Environment Canada.

All weather information provided by should be used with caution.
We cannot guarantee that the data provided here is 100% accurate or up to date!

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