Florida brush fire closes 18-Mile Stretch of US1 for third straight day, temporarily severing link to Keys

Update on Florida wildfires

Dozens of fires continue to burn around the Sunshine State, with some even impacting travel along roadways into and out of the Florida Keys.

MIAMI - A raging brush fire once again forced the temporary closure of Florida's busy 18-Mile Stretch that provides the main link to the Florida Keys. It's the third straight day the main road has been shut down, creating a renewed headache for traffic attempting to get to or from the islands.

The fire has been burning in the southern Miami-Dade County area near the highway and ballooned to 24,000 acres on Thursday while only remaining 30% contained, according to the Florida Forest Service.

Nearly the entire eastern half of the Florida Peninsula was on alert for wildfires Thursday, prompting officials to urge residents once again to avoid outdoor burning.

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Watch: Wildfire burns in Miami-Dade County in Florida

A video shared by Miami-Dade Fire Rescue shows a wildfire that broke out in the county on Wednesday, March 19, 2025.

A video shared by Miami-Dade Fire Rescue shows crews driving through the flames and smoke during the emergency response, as well as helicopters battling the fire from above. 

Officials had warned residents in the region that smoke could drift into neighborhoods, leading to air quality issues.

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"It's also spring break for many people across the country," FOX Weather Meteorologist Craig Herrera said. "And many people go to this part of the country for spring break. So, whether you live there or you're visiting, you know that this is a concern (Thursday)."

The 18-Mile Stretch was only closed for less than an hour on Wednesday but faced a several-hour closure on Tuesday.

NOAA's Storm Prediction Center (SPC) issued an elevated or critical wildfire risk on most of the eastern half of the Florida Peninsula, including millions of people from Orlando to Melbourne and southward through West Palm Beach, Fort Lauderdale, and Miami.

This graphic shows the wildfire threat in Florida on Thursday, March 20, 2025.

In tandem, Fire Weather Warnings are in effect for several counties along Florida's east coast from the Daytona Beach area south along Interstate 95 into Miami.

The FOX Forecast Center said a cold front associated with a powerful storm that brought blizzard conditions to the Plains and severe weather to the Midwest and Great Lakes on Wednesday produced strong winds and low relative humidity ahead of the frontal boundary.