An earthquake of magnitude 4.0 occurred in the morning on Monday, November 17th, 2025, at 11:44 am local time near Preveza, Préveza, Epirus, Greece, as reported by the National Observatory of Athens (NOA).According to preliminary data, the quake was located at a very shallow depth of 5. km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 Seismological Survey of Serbia (SSS) which listed the quake at magnitude 4.1. Other agencies reporting the same quake include the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.2, The Aristotle University of Thessaloniki Geophysical Lab. (AUTH) at magnitude 3.9, The Seismological Laboratory of the University of Athens (UOA) at magnitude 3.9, and the citizen-seismograph network of RaspberryShake at magnitude 4.1.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 Kalamitsi (pop. 210) located 9 km from the epicenter, Lefkada (pop. 8,700) 15 km away, Preveza (pop. 17,300) 24 km away, Palairos (pop. 2,600) 30 km away, and Vonitsa (pop. 4,700) 32 km away.Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Louros (pop. 2,000) located 43 km from the epicenter, Kanalaki (pop. 2,400) 46 km away, Arta (pop. 21,900) 54 km away, and Agrinio (pop. 46,900) 79 km away.Earthquake data: Date & time: Nov 17, 2025 09:44 am (Universal Time) local time (17 Nov 2025 09:44 GMT)Magnitude: 4.1Depth: 14.90 kmEpicenter latitude / longitude: 38.85°N / 20.61°E (Greece)Primary data source: NOA