Before Katrina, the deadliest hurricane to strike the United States was an unnamed category 4 storm that struck Galveston, Texas, in 1900. The September 8 storm claimed at least 8,000 lives (some estimates place the number as high as 12,000). Hurricane strength is measured on the Saffir-Simpson scale, where category 1 is the weakest (with sustained winds of at least 74 miles per hour and a storm surge of 4 to 5 feet above normal) and category 5 is the strongest (with sustained winds of more than 155 miles per hour and a storm surge higher than 18 feet). The United States has been hit by three category 5 storms since record-keeping began. The first was a Labor Day hurricane, which struck the Florida Keys in 1935; 408 people died. The second was Camille, which hit Mississippi and southeast Louisiana in 1969, claiming 256 lives. Hurricane Andrew, which struck south Miami-Dade County, Florida, in late-August 1992, was measured as a category 4 storm at the time, but the National Oceanographic and Atmospheric Agency (NOAA) reclassified it in 2002 as a category 5 storm. Andrew claimed more than 100 lives and devastated a wide area, mostly around the town of Homestead, Florida.