The 1990 Panay earthquake occurred at 3:41 p.m. local time on 14 June 1990 with a

moment magnitude The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...

of 7.1 in the

Richter scale The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 ...

, leaving eight dead and 41 others injured. The epicenter was located at Culasi, Antique on

Panay Island Panay is the sixth-largest and fourth-most populous island in the Philippines, with a total land area of and has a total population of 4,542,926 as of 2020 census. Panay comprises 4.4 percent of the entire population of the country. The City ...

in the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

. The depth was computed to be 15 kilometers. It was generated by fault movement in the collisional zone off western Panay Island.

Earthquake

The 7.1 magnitude earthquake was registered at 3:41 p.m. by the

Philippine Institute of Volcanology and Seismology The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; tl, Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and ...

(PHIVOLCS) and determined it to be of tectonic origin. The depth of focus was measured at 15 kilometers (9 miles) and its epicenter was located in the vicinity of Culasi, Antique. However, the

United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...

(USGS) recorded the depth of focus of the earthquake at 18 kilometers (11.2 miles), deeper than what is recorded by PHIVOLCS.

Impact

Antique

In Culasi, the earthquake's epicenter, seven people were killed and 31 others suffered injuries. Several residential and commercial buildings collapsed and were damaged. Four bridges collapsed. Fissures were recorded in two barangays. In Barangay Bagacay, an upliftment occurred. Landslides also occurred along the slope of Mt. Madya-as.

Aklan

In Libacao, some residential buildings were totally damaged, while some were damaged. Two churches and a river control project were heavily damaged and five highway bridges were partially damaged. In Balete, the Baptist church and the public market were heavily damaged, while an icon was toppled down. The Rural Health Center and a rice mill collapsed. The Balete District Hospital was badly damaged and was declared dangerous for future use. Another public market and some bridges suffered partial damage. A residential house collapsed, while others were partially damaged. In Jaro River, a fissure occurred. In Madalag, the municipal and district hospital sustained some cracks. In

Kalibo Kalibo, officially the Municipality of Kalibo ( Aklanon: ''Banwa it Kalibo''; Hiligaynon: ''Banwa sang Kalibo''; tgl, Bayan ng Kalibo), is a 1st class municipality and capital of the Province of Aklan, Philippines. According to the 2020 census, ...

, the Aklan Science High School and Alan Cinema were partially damaged. The Catholic Church of Kalibo that is made of bricks suffered cracks on its walls. A house made of ceramics was damaged. In Numancia, a sandboil was observed. In Altavas, the wharf was damaged. Some cracks were recorded on the walls of the Cathedral, while the head of an icon was damaged. In Makato, the sports complex was damaged. The posts and beams of the public market were also damaged.

Iloilo

Calinog Calinog, officially the Municipality of Calinog ( hil, Banwa sang Calinog, krj, Banwa kang Calinog, tgl, Bayan ng Calinog), is a 1st class municipality in the province of Iloilo, Philippines. According to the 2020 census, it has a population o ...

, various buildings of the

Philippine Constabulary The Philippine Constabulary (PC; tl, Hukbóng Pamayapà ng Pilipinas, ''HPP''; es, Policía de Filipinas, ''PF'') was a gendarmerie-type police force of the Philippines from 1901 to 1991, and the predecessor to the Philippine National Po ...

Regional Command were damaged. The Catholic Church was partially damaged.

Capiz

Cuartero Cuartero, officially the Municipality of Cuartero (Capiznon/ Hiligaynon: ''Banwa sang Cuartero''; tl, Bayan ng Cuartero), is a 4th class municipality in the province of Capiz, Philippines. According to the 2020 census, it has a population of 27, ...

, a church and several houses were damaged. In Sigma, a bridge and a communication tower were damaged.

References

{{Earthquakes in the Philippines Earthquakes in the Philippines 1990 disasters in the Philippines 1990 earthquakes June 1990 events in Asia