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Light mag. 3.4 earthquake - Philippine Sea, 41 km north of Tandag, Philippines, on Sunday, Dec 12, 2021 at 11:36 pm (GMT +8) -

Light magnitude 3.4 earthquake at 15 km depth

12 Dec 15:55 UTC: First to report: PHIVOLCS after 19 minutes.
13 Dec 15:25: Magnitude recalculated from 3.3 to 3.4. Epicenter location corrected by 3.5 km (2.2 mi) towards WNW.

Earthquake details

Date & time	Dec 12, 2021 15:36:00 UTC -
Local time at epicenter	Sunday, Dec 12, 2021 at 11:36 pm (GMT +8)
Status	Confirmed
Magnitude	3.4
Depth	15.0 km
Epicenter latitude / longitude	9.45°N / 126.22°E (Philippine Sea, Philippines)
Antipode	9.45°S / 53.78°W
Shaking intensity	Weak shaking near epicenter
Felt	0 reports
Primary data source	PHIVOLCS (Philippine Institute of Volcanology and Seismology)
Nearest volcano	Paco (78 km / 48 mi)
Nearby towns and cities	19 km (12 mi) N of Cortes (pop: 3,030) \| Show on map \| Quakes nearby 30 km (18 mi) ENE of Cantilan (Surigao del Sur) (pop: 9,410) \| Show on map \| Quakes nearby 30 km (19 mi) N of Mabahin (pop: 2,330) \| Show on map \| Quakes nearby 33 km (21 mi) NE of Carmen (pop: 2,810) \| Show on map \| Quakes nearby 34 km (21 mi) SE of Socorro (pop: 9,740) \| Show on map \| Quakes nearby 41 km (26 mi) N of Tandag (pop: 29,000) \| Show on map \| Quakes nearby 83 km (52 mi) ENE of Cabadbaran (pop: 31,100) \| Show on map \| Quakes nearby 92 km (57 mi) NNE of Bayugan (pop: 40,600) \| Show on map \| Quakes nearby 93 km (58 mi) NE of Butuan (pop: 309,700) \| Show on map \| Quakes nearby 808 km (502 mi) SE of Manila (pop: 1,600,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 27.8°C (82 F), humidity: 77%, wind: 2 m/s (4 kts) from NE
Estimated seismic energy released	7.9 x 10⁹ joules (2.21 megawatt hours, equivalent to 1.9 tons of TNT) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
3.4	15 km	Philippines: 019 Km N 10° E of Cortes (Surigao Del Sur)	PHIVOLCS
3.3	15 km	MINDANAO, PHILIPPINES	EMSC

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Seismograms

Seismic station: Davao, Philippines (DAV/IU network) | Distance from quake: 274 km / 170 mi | Show on map | Station Info

Seismic station Davao, Philippines: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

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