The Republic of Colombia is situated in the northern part of South America, with coasts to both the Atlantic and the Pacific Oceans. It has a long history of natural disasters: hurricanes from the Caribbean sea have lashed the eastern seaboard more than once, while the western part of the country belongs to the so called “Pacific Fire Belt.” Being in the zone of contact between the Nazca and the South American Techtonic Plates, where the former gets under the latter, it suffers from volcanic eruptions and earthquakes (Figures 1 and 2). The more recent major earthquakes were those in Tumaco in 1979 and Popayan in 1983. In Tumaco, the combined action of the earth movement (magnitude 7.9 in the Richter scale) and the subsequent Tsunami caused an estimated 500 deaths (Gueri et al). Popayan was almost totally destroyed by an earthquake of 5.3 magnitude in which over 100 people died (Gueri and Alzate).