A strong tropical wave moved off the west coast of Africa in the second week of August. It quickly gathered itself and turned into into a low on August 12. Tropical Depression Four was made on August 13 in the east part of the Atlantic from the tropical wave to the south of Cape Verde. The depression was already having continuing deep thunderstorms, but mostly at the west part of its spinning because of wind shear from the east. The depression was supposed to become stronger a lot over the next few days due to wind shear becoming more weak and warmer sea surface temperatures which made conditions better for it to become stronger. The depression moved west very fast, south of a deep layered high, quickly running away from the shear from the east. Looking at satellite pictures and microwave and QuikSCAT information, the depression was changed to Tropical Storm Dean on August 14. It was changed to a category one then a category two hurricane on August 16, 2007. It got to category three then category four on August 17, 2007. It got to category five on August 20, 2007. Dean made landfall in the Yucatan Peninsula as a category 5. The hurricane made another landfall in Mexico on August 22 and Dean died the next day.