Warmer air pushing into the region coupled with mist and drizzle to rain showers is just part of a complex airmass that will give the area a damp Christmas Eve along with dense fog. Environment Canada issued this statement for Sault Ste. Marie and St. Joseph Island Tuesday night into Wednesday.
A moist airmass over northeastern Ontario will result in the development of dense and widespread fog tonight. Visibilities near zero can be expected.
The fog is expected to lift on Wednesday afternoon as an area of significant precipitation moves into the area.
Visibility may be significantly and suddenly reduced to near zero. If travelling, be prepared for areas of near zero visibility.
Weather Advisories for fog are issued when near zero visibilities in fog are expected or occurring.