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A light magnitude 4.2 earthquake struck 89 km SSE of Pondaguitan, Philippines on Saturday, April 18, 2026 at 10:16:04 PM UTC. This intermediate focal depth (112.0 km depth) released energy equivalent to approximately 30 tons of TNT. Here is the verified US telemetry, live epicenter map, and ground shaking assessment.
(89 km SSE of)4.2MB
Light Seismic Class
112.0km
Upper Mantle
5.621° N, 126.515° E
GPS Coordinates
30 tons
TNT Equivalent Power
US
USGS Real-time Feed
A magnitude 4.2 event is classified as a light earthquake. Noticeable shaking of indoor objects and rattling doors/windows. Generally causes none to slight non-structural damage in older buildings.
Felt only by a few persons at rest, especially on upper floors.
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Earthquake strength is measured on a logarithmic scale. Compare this event with the full seismic scale:
Because seismic scales are logarithmic, each whole integer increase represents:
This archipelago is situated along the Sunda and Philippine megathrust subduction zones within the Pacific Ring of Fire. The Indo-Australian Plate converges northeastward beneath the Eurasian and Sunda plates, producing massive tectonic friction, deep oceanic trenches, and widespread volcanic arcs.
Originating at a depth of 112.0 km (Upper Mantle / Wadati-Benioff Zone (70–300 km)), this rupture occurred originated within the descending oceanic plate inside the upper mantle. shaking radiates over a wider geographic area with attenuated high frequencies.
Seismologists note that minor aftershocks remain common in the 24 to 48 hours following tremors of magnitude 4.2. According to statistical seismic models, there is roughly a 5% probability of a subsequent event of equal or greater strength occurring in the same fault zone. Residents in Philippines are advised to check living spaces for unsecured items.
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