Hurricane Dolly caused flooding throughout Mexico in August 1996. The fourth named storm and third hurricane of the season, Dolly developed from a tropical wave to the west-southwest of Jamaica on August 19. Initially a tropical depression, the system strengthened into a tropical storm about twelve hours later. Dolly headed westward and intensified into a Category 1 hurricane late on August 20. It then made landfall near Chetumal, Quintana Roo. The system weakened to a tropical depression on August 21. Later that day or early on August 22, Dolly emerged into the Bay of Campeche and quickly re-strengthened into a tropical storm. The storm deepened further and was upgraded to a hurricane again by midday on August 23; Dolly simultaneously peaked with winds of 80 mph (130 km/h). Around that time, it struck between Tuxpan, Veracruz, and Tampico, Tamaulipas. Dolly quickly weakened to a tropical depression early on August 24, but remained intact while crossing Mexico and dissipated over the eastern Pacific Ocean on August 25. The storm brought heavy rainfall to much of Mexico, peaking at . In Quintana Roo, flooding destroyed a large amount of farmlands. Widespread flooding occurred after a river in the Pueblo Viejo area overflowed its banks. Hundreds of homes were destroyed, displacing about 35,000 people. Large scale evacuations occurred in San Luis Potosí, while about 6,500 fled their homes in the Tampico area. Communications and power outages were reported as far west as Mazatlán, Sinaloa. Throughout Mexico, there were fourteen fatalities reported, including six in Veracruz, three in Nuevo León, one in Monterrey, and another in Pueblo Viejo. Additionally, two people were left missing in Nuevo León. The outer bands of Dolly brought rainfall to southern Texas, which caused minor flooding, but was mostly beneficial due to drought conditions in the state. Meteorological history A large tropical wave, an elongated trough of low pressure, emerged into the Atlantic Ocean from the west coast of Africa around August 9. Although deep convection was associated with the wave when it entered the Atlantic, showers and thunderstorms remained minimal for several days as the system tracked westward. Upon reaching the eastern Caribbean Sea, deep convection redeveloped, but failed to persist, until the wave reached an area southwest of Jamaica on August 18. Around that time, a reconnaissance aircraft flight indicated a low to mid-level circulation, but the system was too weak to classify using the Dvorak technique.