A very deep magnitude 4.8 earthquake was reported around noon near Tahuna, Kabupaten Kepulauan Sangihe, Sulawesi Utara, Indonesia.According to Indonesia's Meteorology, Climatology, and Geophysical Agency, the quake hit on Saturday, February 28th, 2026, at 12:15 pm local time at a great depth of 344. 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.Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 4.5.According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Tahuna (pop. 35,300, 103 km away), the quake was probably not felt.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: Feb 28, 2026 04:15 am (Universal Time) local time (28 Feb 2026 04:15 GMT)Magnitude: 4.5Depth: 322.00 kmEpicenter latitude / longitude: 3.49°N / 124.48°E (Indonesia)Primary data source: BMKG