Timeline: The strongest earthquakes in the Philippines

By Shyla Francisco, ABS-CBN News

Posted at Oct 17 2013 12:28 AM | Updated as of Oct 17 2013 08:28 AM

MANILA - The magnitude 7.2 earth quake that hit Bohol province and other nearby areas in the Visayas on Tuesday was not the strongest tremor to hit the Philippines.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said several destructive earthquakes were recorded since 1968.

Based on Phivolcs data, the strongest quakes since 1968 happened in 1976 (Moro Gulf) and 1990 (Panay). Both quakes were magnitude 7.9.

Three strong quakes, including the Luzon tremor, were also recorded in a same year in 1990.

Here is the timeline of the 12 destructive earthquakes in the country from 1968:

1968 - Casiguran earthquake

The earthquake, which had a magnitude of 7.3, killed 270 people were killed and injured 261. The Ruby Tower in Binondo was among the destroyed buildings. Landslides, large fissures, and tsunami were also observed during the earthquake.

1973 - Ragay Gulf earthquake

Five years after the Casiguran quake, another tremor occurred that measured magnitude 7. Several houses, transporation and communication lines, and underground pipes were destroyed.

1976 - Moro Gulf quake

One of the strongest earthquakes recorded in history had measured magnitude 7.9. It happened on the island of Mindanao and resulted in a tsunami.

Around 1,440 died in Region 9 while 1,379 got killed in Region 12. More than 40,000 were left homeless in both regions because of the quake.

1983 - Laoag quake

A magnitude 6.5 quake occurred in the Ilocos Norte in 1983. The quake resulted in the death of 16 people and injured 47. Establishments including malls, buildings, residences, church, municipal hall, and schools were damaged. Aside from landslides, sandboils and sandblows were also observed.

1990 - Bohol earthquake

A magnitude 6.8 quake that happened in February 1990 killed 6 people and injured more than 200. The damage was estimated at P154 million. Some bridges, including the Jagna and Duero, collapsed. Aside from the quake, ground fissures, landslides, rockfalls, ground subsidence, sand/mud fountaining and increase in sea levels were also recorded.

1990 - Panay quake

Four months after the Bohol tremor, Panay was severely damaged by a magnitude 7.1 earthquake that left 8 people dead and 41 injured. The quake was caused by fault movement in off western Panay Island. Several cities in Aklan, Iloilo, Capiz, and Antique were damaged.

1990 - Luzon earthquake

The strongest earthquake to happen that year occurred a month after the Panay quake. It was recorded at 7.7 magnitude. According to New York times, the quake killed at least 258 people, including 48 children whose school collapsed and 210 others caught in stampedes and fallen buildings.

1994 - Mindoro earthquake

A magnitude 7.1 quake resulted in 78 casualties. The quake also generated a tsunami, causing more damage and casualties.

1996 - Bohol quake

The quake was felt in different municipalities in Bohol including Clarin, Inabanga, Trinidad, Tubigon, Loay and in certain cities of Cebu. It didn’t cause any major damage to properties.

1999 - Bayugan quake

Bayugan in Agusan del Sur experienced a magnitude 5.1 earthquake on June 7, 1999. A strong aftershock occurred in Agusan del Sur.

2002 - Palembang earthquake

The magnitude 6.8 earthquake happened affected the provinces of Sultan Kudarat, Sarangani, North and South Cotabato.. The Office of Civil Defense said 8 people were killed, 41 were injured and 7,684 families were affected. the quake also damaged 4 road networks, 7 bridges, 36 school buildings, 29 business establishments, a megadike, health centers, and public buildings.

2003 - Masbate quake

The Masbate quaked happened in February 2003. The 6.2 magnitude quake was felt not only in Masbate but also in Bicol, Leyte, Panay, Cebu, Negros and Romblon.

2013 - Bohol quake

The magnitude 7.2 quake that struck in Bohol Tuesday has killed more than 150 people so far and affected almost 3 million familes.