The Mexican states of Quintana Roo and Yucatán and the US states of Florida and Louisiana were each struck twice by major hurricanes; Cuba, the Bahamas, Haiti, Mississippi, Texas, Alabama, and Tamaulipas were each struck once and in each case brushed by at least one more. The most catastrophic effects of the season were felt on the United States' Gulf Coast, where a 30 ft (10 m) storm surge from Hurricane Katrina caused devastating flooding that destroyed most structures on the Mississippi coastline; subsequent levee failures in New Orleans, Louisiana caused by the storm crippled the city. Furthermore, Hurricane Stan combined with an extratropical system to cause deadly mudslides across Central America, with Guatemala being hardest-hit.