Parts of South Florida are under a dense fog advisory Tuesday morning.
Areas include inland Miami-Dade, Broward and Palm Beach counties, west of Florida's Turnpike. The advisory is in effect until 9 a.m.
Fog also is affecting roads in the Key Largo, according to the Florida Highway Patrol, on U.S. 1 and Card Sound Road.
The patchy fog that rolled in overnight will cut visibility at times to a half-mile and the National Weather Service is urging caution on the roads.