On the evening of March 18, 2025, residents of Monaco and the Alpes-Maritimes region experienced a series of unexpected seismic events that served as a stark reminder of the area’s geological activity.
At approximately 6:45 p.m., a 4.1-magnitude earthquake struck near Nice, with its epicenter located between the communes of Coaraze and Contes. This initial tremor was followed by a 3.8-magnitude aftershock at 10:25 p.m., both occurring at a shallow depth of around 17 kilometers.
The quakes were felt throughout the department, extending into the Var region. Residents reported sensations akin to a train passing beneath their buildings or heavy objects being dropped by neighbours.
Emergency services throughout surrounding towns received numerous calls, but fortunately, no injuries or structural damages were reported. The Prefecture of the Alpes-Maritimes confirmed the absence of casualties and structural impacts, assuring the public of no tsunami risk.
Monaco, despite its small size, is situated in a seismically active zone. The Principality has proactively addressed this risk by implementing stringent building regulations. Since 1966, earthquake-resistant construction standards have been enforced, with significant updates introduced in a 2016 ministerial decree. These regulations incorporate “microzoning” to map seismic risk with greater precision across Monaco’s unique topography.
The recent tremors underscore the importance of these measures. While relatively rare here, those who have lived in areas of the world where tremors are more frequent are used to being reminded to secure heavy furniture, ensure the stability of wall hangings, and maintain emergency kits equipped with essentials like flashlights, first aid supplies, and battery-operated radios. In the event of an earthquake, the typical advice to those who live in earthquake prone areas like California is to take cover under sturdy furniture, stay clear of windows, and remain indoors until the shaking subsides.
While the Côte d’Azur is renowned for its serene landscapes and luxurious lifestyle, the natural events of March 18 serve as a poignant reminder of the underlying geological forces at play. Monaco’s commitment to rigorous building standards and public awareness ensures that residents and visitors alike can continue to enjoy the beauty of the region with confidence in their safety.
