What: Almost zero visibilities in fog.
When: From late this evening until Friday.
Additional information: Conditions will be conducive to the development of coastal fog which could persist for a period of more than 24 hours. Visibilities could improve temporarily tomorrow during the day before deteriorating again in the evening.
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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 QCstorm@ec.gc.ca or post reports on social media using #QCStorm.