Moderate magnitude 3.9 earthquake at 5 km depth
21 Apr 15:50 UTC: First to report: PHIVOLCS after 18 minutes.
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Date & time: 21 Apr 2021 15:32:00 UTC –
Local time at epicenter: 21 April 2021 – 11:32 PM (PST)
Magnitude: 3.9
Depth: 5.0 km
Epicenter latitude / longitude: 10.79°N / 126.06°E 
(Philippines Sea, Philippines)
Nearest volcano: Cabalian (107 km / 66 mi)
Nearby towns and cities:
30 km (19 mi) ESE of Sulangan (pop: 3,030) –> See nearby quakes!
45 km (28 mi) SE of Guiuan (Eastern Samar) (pop: 11,000) –> See nearby quakes!
71 km (44 mi) NE of Loreto (Dinagat Islands) (pop: 5,400) –> See nearby quakes!
76 km (47 mi) ESE of Giporlos (Eastern Samar) (pop: 5,260) –> See nearby quakes!
89 km (55 mi) SE of Llorente (Eastern Samar) (pop: 7,910) –> See nearby quakes!
126 km (78 mi) ESE of Tacloban City (pop: 242,100) –> See nearby quakes!
126 km (78 mi) ESE of Panalanoy (pop: 189,100) –> See nearby quakes!
127 km (79 mi) NNE of Surigao City (pop: 87,800) –> See nearby quakes!
160 km (100 mi) E of Ormoc City (pop: 191,200) –> See nearby quakes!
695 km (432 mi) SE of Manila (pop: 1,600,000) –> See nearby quakes!
134 km (83 mi) E of Leyte Island (pop: 2,388,500) –> See nearby quakes!
169 km (105 mi) SE of Samar Island (pop: 1,751,300) –> See nearby quakes!
Overcast Clouds
28.4°C (83 F), humidity: 76%, wind: 7 m/s (15 kts) from SWPrimary data source: PHIVOLCS (Philippine Institute of Volcanology and Seismology)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info
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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.
| Magnitude | Depth | Location | Source |
| 3.9 | 5 km | 037 Km N 83° E of Homonhon Island (Guiuan) (Eastern Samar), Philippines | PHIVOLCS |
| 3.9 | 5 km | PHILIPPINE ISLANDS REGION, Philippines | EMSC |
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