on August 29, 1977. However, this storm, the "Galveston hurricane", was the most intense tropical cyclone of the season, peaking as a Category 4 hurricane with maximum sustained winds of and a minimum barometric pressure of . During the month of September, which is the climatological peak of hurricane season, three additional tropical cyclones formed, two of which were hurricanes. After the third hurricane dissipated on September 23, activity went dormant for nearly two weeks, until the fifth tropical storm formed near the Lesser Antilles on October 4. As it was becoming extratropical, a sixth tropical cyclone developed in the Bay of Campeche on October 10. The final system formed in the eastern Caribbean Sea, crossed Hispaniola, and transitioned into an extratropical cyclone between Bermuda and the East Coast of the United States on October 28. By far, the storm that caused the most devastation was Hurricane One, nicknamed the "Galveston hurricane". Its storm surge submerged much of Galveston Island in Texas, killing between 6,000 and 12,000 people. Official estimates put the death toll at approximately 8,000. As a result, it is currently the deadliest natural disaster in the history of the United States. At the time, it was also the second deadliest tropical cyclone in the Atlantic basin, behind only the Great Hurricane of 1780, which killed at least 22,000 people in the Lesser Antilles. However, the Galveston hurricane was surpassed in 1998 by Hurricane Mitch, which caused more than 11,000 fatalities in Central America. The storm was also among the deadliest in Canada, where at least 102 people were killed. Few other tropical cyclones during the 1900 Atlantic hurricane season caused any damage or fatalities. However, the extratropical remnants of Tropical Storm Five brought moderate damage to Canada. The storm caused 1 fatality and about $100,000 in losses, mainly to railroads. The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 81. 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. Systems Hurricane One The Great Galveston Hurricane of 1900 Early on August 27, a