Seismic Activity in/around Belgium in 2025
In 2025, 137 earthquakes were located by the Royal Observatory of Belgium in or near Belgium. On Belgian territory, no earthquake was large enough to have been felt.
In 2025, 137 natural earthquakes were measured by the Royal Observatory of Belgium in a zone between 1° and 8°E longitude and 49° and 52°N latitude (Figure 1). 37 natural earthquakes were located on Belgium territory, although none of these events were felt by the local population as either these earthquake’s magnitudes were too small, or their focal depths were too deep. The largest earthquake in Belgium occurred on 31 December 2025 in Heppenbach and had a local magnitude of ML=1.7. The 2025 ROB catalogue is complete for natural earthquakes with a magnitude ML larger than 1.0. Events with magnitudes lower than 1.0 were also routinely detected where the Belgian seismic network is denser on the Belgian property. Outside Belgium, only those events that were large enough to be detected by the Belgian seismic network were included in the 2025 seismic catalogue. Most earthquakes recorded in 2025 occurred in regions with documented historical seismic activity (Figure 2).
In 2025, the Royal Observatory of Belgium (ROB) also measured four induced events, 307 quarry blasts and 4 explosions offshore linked to controlled explosions of WW1 and WW2 bombs by the Belgian, Dutch or French Armies.
In comparison, last year in 2024, 141 earthquakes were detected in and around Belgium.
Figure 1: Events recorded in 2025 by the Belgian Seismic Network of the Royal Observatory of Belgium. 37 earthquakes occurred on Belgian territory.
Figure 2: Earthquakes recorded in 2025 by the Belgian Seismic Network of the Royal Observatory of Belgium. The full Belgian seismic catalogue is shown in white. Earthquakes measured in 2025 occurred in regions with documented historical seismic activity.
Website: https://seismologie.be/en