At least four wildfires broke out on New York's Long Island over the weekend, threatening the Hamptons as people on social media shared videos of the flames and smoke billowing into the sky above.

At least two commercial structures have burned down, Suffolk County officials said. One firefighter suffered second-degree burns in the blazes.

Fast-moving brush fires fanned by high winds burned through a large swath of land on New York's Long Island on Saturday, spewing thick gray smoke into the sky and prompting the evacuation of a military base and the closure of a major highway.