A magnitude 4.6 earthquake near Aparri, Cagayan, Cagayan Valley, Philippines, was reported only 10 minutes ago by Indonesia's Meteorology, Climatology, and Geophysical Agency, considered the main national agency that monitors seismic activity in this part of the world. The earthquake occurred at an intermediate depth of 141. km beneath the epicenter in the morning on Monday, August 11th, 2025, at 10:55 am local time. 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 the Philippine Institute of Volcanology and Seismology (PHIVOLCS), which listed it as a magnitude 4.4 earthquake.Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Binalan (pop. 2,300) located 5 km from the epicenter, Aparri (pop. 33,200) 6 km away, Ballesteros (pop. 5,600) 9 km away, Cabaritan East (pop. 9,300) 12 km away, Magapit (pop. 11,200) 27 km away, Sanchez-Mira (pop. 26,200) 43 km away, Solana (pop. 71,500) 80 km away, Tuguegarao (pop. 166,300) 84 km away, and Tabuk (pop. 27,000) 99 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.Earthquake data: Date & time: Aug 11, 2025 10:55 am (GMT +8) local time (11 Aug 2025 02:55 GMT)Magnitude: 4.6Depth: 141.00 kmEpicenter latitude / longitude: 18.36°N / 121.58°E (Province of Cagayan, Cagayan Valley, Philippines)Primary data source: BMKG