An Air Force reconnaissance plane found some tropical storm winds in a wave that could hit South Florida this weekend.

The National Weather Service estimated that the Invest 99-L wave, which was approaching Puerto Rico on Wednesday, has an 80 percent chance of turning into a tropical storm. Tropical storms can have winds of up to 73 mph, but the biggest concern appears to be heavy rain leading to flooding.

The storm would be called Hermine. Tropical Gaston is further out in the Atlantic and is not expected to hit Florida.

The Property Casualty Insurers Association of America (PCI) sent out a press release Wednesday urging Floridians to take steps now to prepare.

“With peak of the season storms potentially targeting Florida, PCI encourages property owners to take precautions to protect themselves and their belongings for direct and indirect impacts that Invest 99 could have on our homes and businesses,” said Logan McFaddin, PCI’s Florida regional manager.

FPL’s website has tips on how businesses can prepare for storms.