Five formed southwest of Cape Verde. Simultaneously, Tropical Depression Five attained its peak intensity with winds of and a minimum pressure of . August 31 1600 UTC (12:00 p.m. EDT) - Tropical Depression Five dissipated. September 4 1200 UTC (8:00 a.m. EDT) - Tropical Depression Six formed southeast of Bermuda. September 5 1200 UTC (8:00 a.m. EDT) - Tropical Depression Six strengthened into Tropical Storm Claudette. September 6 1200 UTC (8:00 a.m. EDT) - Tropical Storm Claudette strengthened into a Category 1 hurricane. 1800 UTC (2:00 p.m. EDT) - Hurricane Claudette strengthened into a Category 2 hurricane. September 7 0000 UTC (8:00 p.m. EDT September 6) - Hurricane Claudette strengthened into a Category 3 hurricane. 0000 UTC (8:00 p.m. EDT September 6) - Tropical Depression Seven formed south-southwest of Cape Verde. 1200 UTC (8:00 a.m. EDT) - Hurricane Claudette briefly strengthened into a Category 4 hurricane, which was not operationally known. Simultaneously, Hurricane Claudette attained its peak intensity with winds of and a minimum pressure of making it the most intense hurricane of the 1991 season. Since it was not operationally known that Claudette became a Category 4 hurricane, winds were pegged at before post-analysis revealed winds at . 1800 UTC (2:00 p.m. EDT) - Hurricane Claudette weakened back to a Category 3 hurricane. September 8 0000 UTC (8:00 p.m. EDT) - Hurricane Claudette weakened back to a Category 2 hurricane. 1200 UTC (8:00 a.m. EDT) - Tropical Depression Seven strengthened into Tropical Storm Danny. 1800 UTC (2:00 p.m. EDT) - Hurricane Claudette weakened back to a Category 1 hurricane. 1800 UTC (2:00 p.m. EDT) - Tropical Depression Eight formed several hundred miles south-southwest of Cape Verde. September 9 0000 UTC (8:00 p.m. EDT September 8) - Tropical Storm Danny attained its peak intensity with winds of and a minimum pressure of . 1800 UTC (2:00 p.m. EDT) - Tropical Depression Eight strengthened into Tropical Storm Erika. September 10 0600 UTC (2:00 a.m. EDT) - Hurricane Claudette weakened back to a tropical storm. 1800 UTC (2:00 p.m. EDT) - Tropical Storm Erika attained its peak intensity with winds of and a minimum pressure of . September 11 1200 UTC (8:00 a.m. EDT) - Tropical Storm Danny was downgraded back to a tropical depression. 1800 UTC (2:00 p.m. EDT) - Tropical Storm Claudette was downgraded to a tropical depression. 1800 UTC (2:00 p.m. EDT) - Tropical Depression Danny dissipated. September 12