Shallow M6.1 earthquake hits Masbate region, Philippines

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A shallow earthquake registered by the USGS as M6.1 hit the Masbate region, Philippines at 18:10 UTC on February 15, 2023. The agency is reporting a depth of 20 km (12.4 miles). EMSC is reporting M6.0 at a depth of 40 km (24.8 miles).

The epicenter was located 11 km (6.8 miles) NNE of Miaga (population 2 149, 26.8 km (16.6 miles) ESE of Masbate (population 47 490), 38.5 km (23.8 miles) S of Bulan (population 28 529), and 45.4 km (28.1 miles) SSW of Irosin (population 20 716), Philippines.

1 000 people are estimated to have felt very strong shaking, 359 000 strong, and 920 000 moderate.

There is no tsunami threat from this earthquake.

The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

Overall, the population in this region resides in structures that are a mix of vulnerable and earthquake-resistant construction. The predominant vulnerable building types are unknown/miscellaneous types and heavy wood frame construction.

Recent earthquakes in this area have caused secondary hazards such as landslides and liquefaction that might have contributed to losses.

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Image credit: TW/SAM, Google

Estimated population exposure to earthquake shaking

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m6.1 earthquake philippines february 15 2023 usgs epet

Selected cities exposed

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Regional seismicity

Featured image credit: TW/SAM, Google


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