The 1928 Atlantic hurricane season featured the Okeechobee hurricane, the second deadliest tropical cyclone in the history of the contiguous United States. Only seven tropical cyclones developed during the season. Of these seven tropical systems, six of them intensified into a tropical storm and four further strengthened into hurricanes. One hurricane deepened into a major hurricane, which is Category 3 or higher on the modern-day Saffir–Simpson hurricane wind scale. The first system, the Fort Pierce hurricane, developed near the Lesser Antilles on August 3. The storm crossed the Bahamas and made landfall in Florida. Two fatalities and approximately $235,000 in damage was reported. A few days after the first storm developed, the Haiti hurricane, formed near the southern Windward Islands on August 7. The storm went on to strike Haiti, Cuba, and Florida. This storm left about $2 million in damage and at least 210 deaths. Impacts from the third system are unknown. The most significant storm of the season was Hurricane Four, nicknamed the Okeechobee hurricane. Becoming a Category 5 hurricane, the hurricane struck Puerto Rico at that intensity. Several islands of the Greater and Lesser Antilles suffered "great destruction", especially Guadeloupe and Puerto Rico. The storm then crossed the Bahamas as a Category 4 hurricane, leaving deaths and severe damage on some islands. Also as a Category 4, the cyclone struck West Palm Beach, Florida, resulting in catastrophic wind damage. Inland flooding and storm surge resulted in Lake Okeechobee overflowing its banks, flooding nearby towns and leaving at least 2,500 deaths, making it the second deadliest hurricane in the United States after the 1900 Galveston hurricane. Overall, this storm caused at least $100 million in damage and 4,079 deaths. The three remaining systems did not impact land. Collectively, the storms of this season left over $102 million in damage and at least 4,289 fatalities. The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 83, slightly above the 1921–1930 average of 76.6. ACE is a metric used to express the energy used by a tropical cyclone during its lifetime. Therefore, a storm with a longer duration will have high values of ACE. It is only calculated at six-hour increments in which specific tropical and subtropical systems are either at or above sustained wind speeds of , which is the threshold for tropical storm intensity. Thus, tropical depressions are not included here. Timeline Systems Hurricane One