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Light mag. 3.6 earthquake - South China Sea, 123 km west of Laoag, Province of Ilocos Norte, Philippines, on Thursday, Feb 9, 2023 at 7:52 pm (GMT +8) -

Light magnitude 3.6 earthquake at 16 km depth

9 Feb 12:15 UTC: First to report: PHIVOLCS after 24 minutes.

Earthquake details

Date & time	Feb 9, 2023 11:52:00 UTC -
Local time at epicenter	Thursday, Feb 9, 2023 at 7:52 pm (GMT +8)
Status	Confirmed
Magnitude	3.6
Depth	16.0 km
Epicenter latitude / longitude	17.93°N / 119.47°E (South China Sea, Philippines)
Antipode	17.93°S / 60.53°W
Shaking intensity	Weak shaking near epicenter
Felt	0 reports
Primary data source	PHIVOLCS (Philippine Institute of Volcanology and Seismology)
Nearest volcano	Patoc (182 km / 113 mi)
Nearby towns and cities	98 km (61 mi) WNW of Puro Pinget (pop: 4,030) \| Show on map \| Quakes nearby 105 km (65 mi) WNW of Vigan (pop: 48,500) \| Show on map \| Quakes nearby 117 km (72 mi) W of Batac City (pop: 53,500) \| Show on map \| Quakes nearby 122 km (76 mi) WSW of San Nicolas de Ilocos (Ilocos Norte) (pop: 34,200) \| Show on map \| Quakes nearby 123 km (76 mi) WSW of Laoag (pop: 102,100) \| Show on map \| Quakes nearby 151 km (94 mi) NW of Tagudin (pop: 35,800) \| Show on map \| Quakes nearby 172 km (107 mi) NNW of San Fernando (pop: 83,000) \| Show on map \| Quakes nearby 404 km (251 mi) NNW of Manila (pop: 1,600,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 26.1°C (79 F), humidity: 79%, wind: 3 m/s (5 kts) from NNW
Estimated seismic energy released	1.6 x 10¹⁰ joules (4.4 megawatt hours, equivalent to 3.79 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
3.6	16 km	Philippines: 102 Km N 68° W of Santa Catalina (Ilocos Sur)	PHIVOLCS
3.6	16 km	Philippines: PHILIPPINE ISLANDS REGION	EMSC
3.6	16 km	Philippines: Philippine Islands Region	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in Philippines

Seismograms

Seismic station: Taitung (TWGB/TW network) | Distance from quake: 569 km / 353 mi | Show on map | Station Info

Seismic station Taitung: 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: 0.5-5.0 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.

Earlier earthquakes in the same area

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