Crews are working to contain a wildfire in southwest Miami-Dade that has shut down access in and out of the Florida Keys.

"A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior," the red flag warning said. The warning is in effect from noon to 8 p.m. for ...

Martin, St. Lucie and Indian River counties are under a red flag warning. The warning will be from noon to 8 p.m. Monday. Strong northwest winds could gust up to 30 mph, with 25% humidity.