Strong mag. 6.1 earthquake - 15 km west of Calaca, Batangas, Calabarzon, Philippines, on Sunday, May 22, 2022 at 5:50 am (GMT +8) -

An intermediate to deep magnitude 5.8 earthquake was reported early morning near Balayan, Batangas, Calabarzon, Philippines.
According to the German Research Centre for Geosciences (GFZ), the quake hit on Sunday, May 22nd, 2022, at 5:50 am local time at an intermediate to considerable depth of 168 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by France's Réseau National de Surveillance Sismique (RéNaSS), which listed it as a magnitude 5.7 earthquake. Other agencies reporting the same quake include the citizen-seismograph network of RaspberryShake at magnitude 5.8, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 5.9.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Binubusan (pop. 6,700) located 3 km from the epicenter, Balayan (pop. 50,100) 8 km away, Balayan (pop. 50,100) 8 km away, Nasugbu (pop. 62,900) 12 km away, Calaca (pop. 37,400) 17 km away, Tagaytay (pop. 71,200) 33 km away, Silang (pop. 119,500) 44 km away, Calamba (pop. 316,600) 61 km away, Manila (pop. 1,600,000) 80 km away, and Quezon City (pop. 2,761,700) 87 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. 126 km² (=49 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 19 km (12 mi).
Aftershocks typically occur during the weeks and months following the quake at or near the same fault, at distances of up to approx. two times the length of the rupture zone.
The often broadly linear arrangement of aftershock epicenters encompasses the rupture zone of the main shock (check on the map below to verify).

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