Hurricane Stan was the deadliest tropical cyclone of the 2005 Atlantic hurricane season. A relatively weak system that affected areas of Central America and Mexico in early October 2005, Stan was the eighteenth named storm and eleventh hurricane of the 2005 season, having formed from a tropical wave on October 1 after it had moved into the western Caribbean. The depression slowly intensified, and reached tropical storm intensity the following day, before subsequently making its first landfall on the Yucatán Peninsula. While traversing the peninsula, the tropical storm weakened, but was able to re-intensify once it entered the Bay of Campeche. Under favorable conditions for tropical cyclogenesis, Stan attained hurricane strength on October 4, and later reached peak intensity with winds of 80 mph (130 km/h) and a minimum barometric pressure of 977 mbar (28.9 inHg). The hurricane maintained this intensity until landfall in the Mexican state of Veracruz later the same day. Once over the mountainous terrain of Mexico, however, Stan quickly weakened, and dissipated on October 5. Category 1 hurricane: peak winds of 80 mph (70 knots), lowest pressure 977 mb. October 1 – October 5, 2005. Landfalls: October 2 at 40 mph, 19.6°N 87.5°W; October 4 at 80 mph, 18.6°N 94.9°W. Accumulated cyclone energy: 2.4. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track AL202005 (public domain).