low pressure in the southern Bay of Campeche. September 6 06:00 UTC (1:00 a.m. CDT) – Tropical Depression Ten intensifies into Tropical Storm Hermine. September 7 02:00 UTC (9:00 p.m. CDT September 6) – Tropical Storm Hermine attains its peak intensity with maximum sustained winds of 70 mph (110 km/h) and a minimum barometric pressure of 989 mb (hPa; 29.21 inHg) and simultaneously makes landfall near Matamoros, Mexico at that intensity. September 8 00:00 UTC (7:00 p.m. CDT, September 7) – Tropical Storm Hermine weakens to a tropical depression over central Texas. 06:00 UTC (2:00 a.m. AST) – A tropical depression develops from an area of low pressure roughly 80 mi (130 km) southeast of the southernmost Cape Verde Islands. 12:00 UTC (8:00 a.m. AST) – The tropical depression intensifies into Tropical Storm Igor. September 9 12:00 UTC (8:00 a.m. AST) – Tropical Storm Igor weakens to a tropical depression. 18:00 UTC (1:00 p.m. CDT) – Tropical Depression Hermine transitions into a post-tropical cyclone over southeastern Kansas. September 10 12:00 UTC (8:00 a.m. AST) – Tropical Depression Igor re-intensifies into a tropical storm. September 12 00:00 UTC (8:00 p.m. AST, September 11) – Tropical Storm Igor intensifies into a Category 1 hurricane. 06:00 UTC (2:00 a.m. AST) – Tropical Depression Twelve develops from an area of low pressure roughly 250 mi (400 km) southeast of the southernmost Cape Verde Islands. 12:00 UTC (8:00 a.m. AST) – Hurricane Igor intensifies into a Category 2 hurricane. 18:00 UTC (2:00 p.m. AST) – Hurricane Igor intensifies into a Category 4 hurricane. 18:00 UTC (2:00 p.m. AST) – Tropical Depression Twelve intensifies into Tropical Storm Julia. September 14 12:00 UTC (8:00 a.m. AST) – Tropical Storm Julia intensifies into a Category 1 hurricane. 12:00 UTC (8:00 a.m. EDT) – A tropical depression develops from an area of low pressure roughly 325 mi (525 km) east of Chetumal, Mexico. 12:00 UTC (8:00 a.m. AST) – Tropical Storm Fiona attains its peak intensity with a minimum barometric pressure of 998 mb (hPa; 29.47 inHg). 18:00 UTC (2:00 p.m. EDT) – The tropical depression intensifies into Tropical Storm Karl. September 15 00:00 UTC (8:00 p.m. AST, September 14) – Hurricane Igor attains its peak intensity with maximum sustained winds of 155 mph (250 km/h) and a minimum barometric pressure of 924 mb (hPa; 27.29 inHg). 00:00 UTC (8:00 p.m. AST, September 14) – Hurricane Julia intensifies into