This morning featured a lot of dense fog, keeping visibilities below 1/4 mile for many hours in a lot of places. Friday will have another round of fog during the morning, giving way to another sunny and warm afternoon.
The warmer temps of late have allowed the atmosphere to handle more moisture. Winds off the lake Wednesday brought in a lot of low-level moisture. With light/calm winds and temperatures dropping into the mid 30s overnight, the moisture cooled to the dew point temperature, allowing the air to saturate.
Things should improve over the weekend. Some fog is still possible Saturday morning, but it should not be dense.