The 1948 Lady Caycay earthquake occurred at 01:46 PST (UTC+08:00) on 25 January 1948 with an estimated moment magnitude of 7.8 and a maximum Mercalli intensity of X (Extreme). The epicenter was between the municipalities of Anini-y, Antique, and Dao (present-day Tobias Fornier in Antique) on Panay Island, Philippines.