M 6.9 earthquake near Cagayan, Philippines — 1977-07-21

Magnitude 6.9 earthquake near 106 km SE of Tuguegarao (Philippines), depth 33 km, 22:45 Local (1977-07-21 13:45 UTC). Shaking felt by ~55.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

106 km SE of Tuguegarao (Philippines) — 16.882, 122.361