A thick fog settled in overnight, triggering weather alerts throughout northeast Ohio early Wednesday.
With visibility ranging from near zero to a quarter mile, the National Weather Service put most of the Channel 3 viewing area under a Dense Fog Advisory until 9 a.m.
A handful of schools even delayed the start of classes by two hours due to the foggy conditions.
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Authorities urged drivers to slow down, use low beams and leave plenty of distance from the vehicle in front.
The impacted counties included: