October 1999 Mexico floods

October 1999 Mexico flood

Satellite image of Tropical Depression Eleven near eastern Mexico
Date	September–October 1999
Location	Central America, Mexico
Deaths	636 total
Property damage	$491.3 million (1999 USD) 4.7 billion pesos (1999 MXN)

In October 1999, severe flooding affected portions of eastern Mexico and Central America. Rainfall in September preceded the primary event in Mexico, which moistened soils. On October 4, Tropical Depression Eleven developed in the Gulf of Mexico, which drew humidity from the gulf and the Pacific Ocean to produce torrential rainfall in mountainous regions of eastern Mexico, reaching 43.23 in (1,098 mm) in Jalacingo, Veracruz. This was the third-highest tropical cyclone-related rainfall total in Mexico from 1980-2006, and the event caused the highest rainfall related to tropical cyclones in Veracruz, Hidalgo, and Puebla. In some locations, the daily rainfall represented over 10% of the annual precipitation total. The heaviest rainfall occurred in mountainous regions that were the mouths of several rivers. A broad trough absorbed the depression on October 6, and rainfall continued for the next few days. Additional rainfall occurred in Tabasco state on October 18. The floods were estimated as a 1 in 67 year event in one location, although such floods are expected to affect eastern Mexico twice per century, the last time being 1944.

Throughout Mexico, the floods killed at least 379 people, according to the federal government, and as many as 600 according to relief agencies; the Centre for Research on the Epidemiology of Disasters later estimated there were 636 deaths, and damage in Mexico was estimated at $451.3 million (4.3 billion pesos). Nationwide, the floods damaged or destroyed 90,000 houses, which left about 500,000 people homeless. Flooding caused thousands of landslides, many in more populated areas than the flooding in 1944. The floods also caused 39 rivers to overflow, and the combination of floods and landslides destroyed bridges, houses, widespread crop fields, schools, and electrical networks. Impact was worst in Puebla, where damage totaled $240 million (2.1 billion pesos) and many roads were washed out. Landslides in the state killed 107 people in Teziutlán. Elsewhere in the country, the floods washed crocodiles into the streets of Villahermosa, the capital of Tabasco, and in Oaxaca, the rainfall occurred after an earthquake left thousands homeless. Flooding also extended into Central America in late September through early October, causing $40 million (385 million pesos) in crop damage and 70 deaths.