August 30, 1924 Earthquake: Surigao,butuan, Mindanao, Philippines

Reference #414:

1924, August 30, 11:07 [local time]. There was an earthquake which was felt from the southeastern regions of Luzon Island as far as the Talaud Islands (2 degrees at Beo) and from the coast of the Pacific as far as Zamboanga. It reached its greatest intensity, about 6-7 degrees (VII Rossi-Forel), on the northeast of Mindanao Island, in the provinces of Surigao and Agusan, on an area of about 8000 km2. On the Pacific coast and along the river banks in the valley of the Agusan River (Butuan and other regions), numerous cracks appeared in the ground and many avalanches and landslides occurred, but all this was observed only in very young, very loose alluvial ground.

Considerable material damage was done here. However, the predominant types of structures in this locality were wooden or bamboo pile huts, which easily withstood the underground shocks. Some of the huts sank completely into the cracked ground. A reinforced concrete building built

on loose ground, suffered damage.

Recurrent shocks of different force occurred very frequently during the first eight days after the earthquake. A tsunami was observed at Bislig and Hinatuan.

Gutenberg, Richter (1954): 30.VIII; 3h04m57s; 8.5 N,

126.5 E; M=7.3.

Reference #1187:

1924, August 30, 11:07 a.m. [local time]. Surigao and Agusan 9oN - 127oE: Surigao - Intensity VIII-IX.

Reference #88:

1924, August 30, 03:04:57 UTC, 8.5 N, 126.5 E, magnitude 7.3 MS, shallow depth.

Reference #130:

1924, August 30, 03:04:57 UTC, 8.5 N, 126.5 E, magnitude 7.3 MS.

Reference #1058:

1924, August 30, 03:04:57 UTC, 8.5 N, 126.5 E, magnitude 7.3.