Near-zero visibility in fog is expected.
Dense fog forming over Lake Superior and moving inland will affect portions of the region mainly from near Marathon to the eastern shores of the lake until Sunday morning.
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Visibility will likely be suddenly reduced at times.
Fog advisories are issued when widespread poor visibility in fog is expected.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.