When Hurricane Isaac reached the gulf, it was forecasted as a Category 2 storm, but the land disruption at Hispaniola prevented it from forming a solid core until its first landfall. On August 28, Isaac reached hurricane strength as a Category 1 storm. Isaac hit Palm Beach County, dropping 7-18 inches of heavy rainfall. Winds pounded the beaches of Jupiter, blowing enormous amounts of sand away and wiping out hundreds of sea turtle nests.
A 2.5 m storm surge made its first landfall in the U.S. near the mouth of the Mississippi River at 6:45 PM. Wind gusts reached 110 km/h, destroying houses and cutting off power. 2,132 people housed in the 31 shelters across the state and 4,000 homes were without power at 5:30 AM. The second landfall occurred in Port Fourchon, Louisiana at around 2:00 AM. Another high storm surge at around 3.4 m hit Shell Beach, with winds at 67 mph and gusts at 85 mph. Over 901,000 homes lost electricity during the hurricane and 13,000 homes were damaged in the process.
Eventually, the destruction was tempered by functional levees, but Isaac has left the southern area once again damaged and torn. Around nine confirmed deaths took place in the U.S. during the storm, 5 in Louisiana, 2 in Florida, and 2 in Mississippi. Other areas affected by Isaac included Alabama, Texas, and Arkansas.