Zambales Earthquake 5.9 Magnitude

The initial quake measuring magnitude 5.9 was recorded at 1:15 a.m. with the epicenter at 35 km southwest of Iba, Zambales.


Following a predawn magnitude-5.9 quake that was felt in Metro Manila and nearby provinces, state seismologists warned of possible aftershocks, at least three of which had been recorded early Tuesday in Zambales province.

The Philippine Institute of Volcanology also amended its report on the initial quake, which it said was at magnitude 5.9 and not magnitude 6.2 as it initially reported.

It was felt at:
  • Intensity V (Strong): Iba, San Felipe, and Santa Cruz, Zambales;
  • Intensity IV (Moderately strong): Clark, Pampanga; Obando, Bulacan; Quezon City; Manila; Alabang, Muntinlupa; Bacoor, Cavite'
  • Intensity III (Weak): Makati; Pasig; Taguig; Mandaluyong; Tagaytay; Cabanatuan City, Nueva Ecija; Guiguinto, Bulacan; and
  • Intensity II (Slightly felt): Baguio City.

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