Part of a legal description of a boundary line of Dixie County, for instance, says it goes "southerly down the thread of the main stream of said Suwannee River to the Gulf of Mexico; thence along said Gulf of Mexico, including the waters of said gulf within the jurisdiction of the State of Florida, to the mouth of the Steinhatchee River."

Just how much snow & freezing rain fell in Northeast Florida and Southeast Georgia? A look inside the numbers from the Jacksonville-area winter storm.

The heaviest snowfall in the Sunshine State occurred around Pensacola, where spotters reported measuring amounts of 5 to 12 inches through Tuesday evening. Due to the hazardous weather and a series of crashes, a nearly 70-mile stretch of Interstate 10 was shut down by the Florida Highway Patrol.

Pensacola had official total of 7.6 inches, while Milton hit 8.8. Unofficial totals by Weather Service could be as high as 9.8 inches.

A major winter storm slammed the US Gulf Coast Tuesday, blanketing parts of a region largely unaccustomed to extreme winter weather with record-breaking snowfall.

Dangerous below-freezing temperatures with even colder wind chills were also expected to last over much of the week in the region. Authorities say three people have died in the cold weather.

A rare winter storm churned across the U.S. Gulf Coast on Tuesday, breaking snowfall records more than a century old in a southern region where flurries are unusual, as much of the United States remained in a dangerous deep freeze.