The iconic Jaro Belfry was severely damaged during the 1948 Lady Caycay Earthquake
The 1948 Lady Caycay earthquake was a magnitude 7.8 tremor that struck Panay Island, Philippines, and is considered the second-biggest earthquake in the country's recorded history. The event caused widespread devastation, particularly in Iloilo and Antique, and even triggered a small tsunami. It made a significant impact and effects in the entire Panay Island claiming lives and destroying properties.
The name "Lady Caycay" comes from the local Hiligaynon and Kinaray-a term caycay, which describes the scratch marks made by chickens. Residents used this term to describe the ground fissures that appeared after the earthquake, especially in the low-lying parts of Iloilo province.
The main shock occurred at 1:46 a.m. PST on January 25, 1948, lasting for up to three minutes. The three-minute shaking causes 55 Spanish period churches to be battered and severely damaged while 17 structures were totally collapsed.
The epicenter was located on the West Panay Fault, near the municipalities of Anini-y and Dao (now Tobias Fornier) in Antique province. The earthquake was caused by the movement of this active fault line. The location of West Panay Fault passes the towns of San Joaquin, Miag-ao, Igbaras, Tubungan, Leon, Alimodian, Janiuay, Lambunao, Tapaz, Jamindan, Sibalom, San Remigio, Valderrama, Libacao, Madalag, Malinao and Pandan.
Early reports approximate the magnitude at 8.2 Ms, but more recently the estimates place the event magnitude at 7.8 Mw. The maximum intensity reached an "Extreme" X on the Mercalli Intensity Scale and a "Devastating" IX on the PEIS (PHIVOLCS Earthquake Intensity Scale).
The main tremor was followed by a series of major aftershocks for nearly a month.
The strong shaking created fissures in the ground up to four meters wide, with some on the coastlines filling with seawater. Landslides, sand blows, and the emergence of a new brook in the town of Cabatuan in Iloilo are just some of aftermaths of that strong earthquake.
A minor tsunami with waves soaring up to two meters high seen along the Iloilo Strait claimed two lives and damaging structures along the coastline.
The impact of the Lady Caycay earthquake was strongly felt in the provinces of Aklan, Antique, Capiz and Iloilo sustaining severe damages and destroying or heavily damage many bridges, telecommunication lines as well as public and private structures.
A lot of heritage churches during the Spanish period were either heavily damaged or collapsed including:
- The Jaro Metropolitan Cathedral's five-story belfry collapsed to the ground.
- The elegant Gothic-Neoclassical Byzantine Ottoman influenced Oton church was severely damaged and eventually demolished.
- Some belfries in places like the town of San Joaquin and Iloilo City district of Arevalo was also toppled to the ground.
- The UNESCO World Heritage site, the Miag-ao church whose sturdy buttresed walls withstood the tremors was only one of the few exceptions.
A magnitude 8.2 earthquake, referred to locally as the "Lady Caycay earthquake," struck southwest of Panay Island on January 25, 1948, at 1:46 am Philippine Time. The aforementioned second-strongest earthquake in Philippine history had the greatest effects on the province of Iloilo and other parts of the island. The old Oton Church had to be dismantled because it was so badly damaged. Jaro Cathedral's five-story belfry also fell. The magnificent Oton church, one of the most exquisite buildings on Panay Island and part of the Spanish architectural legacy in the Philippines, sustained some damage.
The majority of the major damage discovered during the inquiry was in the province of Iloilo, notably in churches that still stand from the Spanish era. In general, there was significant damage to public and private buildings, bridges, and communication cables.
Along the Iloilo Strait, a 6.5-foot (2-meter) tsunami was reported to have struck the coastlines of Guimaras and Southern Iloilo. Two people were killed in the incident.
The islands of Negros, Guimaras, and Panay had strong intensity.
Sources:
#ThrowbackEarthquakeInfo by Philippine Institute of Volcanology and Seismology (PHIVOLCS-DOST) Official Facebook Page, dated January 25, 2024 -https://www.facebook.com/PHIVOLCS/posts/pfbid02xtLt8xPQFbV9cxuBKqGCneWPe4DuXDYHUjFnjjP1xyLSH1FBF17PWtowuvtHM4mol
Iloilo City Government Official Facebook Page post, dated April 2, 2025 - https://www.facebook.com/iloilocitygov/photos/dyk-on-january-25-1948-a-magnitude-82-earthquake-which-local-folks-dubbed-the-la/1068944321934908/