Published on: September 7, 2008 at 6:13 AM

Fog is very dense across North and Central Alabama this morning. Several comments from Skywatchers and others about its thickness this morning.

In spots, visibilities may be near zero.

Dense fog advisories are in effect for North and Central Alabama.

Here are some surface observations from the northern half of the state. The visibility is t he middle value on the left side of each station plot.

Use extra care when driving this morning. Fog may suddenly blind you. Use low beam headlights and reduce speed.