Earthquake rattles Germany's Palatinate region near Worms

What happened

On Thursday at around 5:27 p.m. local time, an earthquake struck southwestern Germany near the city of Worms, felt across a wide area. Its epicenter was located in Bobenheim-Roxheim, in the Rhein-Pfalz district near the Rhine river and right at the borders of Hesse and Baden-Württemberg — leading experts to dub it the "three-state quake." According to initial data from the GFZ Helmholtz Centre for Geosciences, the magnitude was 3.3, but the Baden-Württemberg state earthquake service revised it to 3.5 on the Richter scale on Friday.

The tremor was felt within a roughly 30-kilometer radius — not only in the Palatinate but also in southern Hesse (Lampertheim, Biblis, Bürstadt, Viernheim, Lorsch, Heppenheim) and in the Odenwald region as far as Wald-Michelbach. Residents reported rumbling, vibrations and a jolt some compared to a truck slamming into a wall; furniture and appliances shook. Many called police and fire departments, while thousands reported the event to the Baden-Württemberg earthquake service.

Cause

Seismologist Martin Hensch of the geology office in Freiburg explained that the tremor originated at a depth of about 8 kilometers and was of natural origin. The region lies in the Upper Rhine Graben, a tectonically active zone crossed by old fault lines where stress builds up due to the movement of the African and Eurasian plates. When that tension suddenly releases, an earthquake results.

Damage and aftershocks

Police, fire services, as well as Worms Cathedral, chemical company BASF and Ludwigshafen hospital confirmed on Friday that no damage or injuries had occurred. Two much weaker aftershocks were later recorded — 1.7 magnitude at 6:14 p.m. and 0.7 at 7:35 p.m. — neither of which was felt. However, the economics ministry in Mainz referred to four weak aftershocks in total, so sources differ on the exact number.

Is this unusual?

For the Palatinate, a quake of this strength is unusual, but not for Germany as a whole. The Federal Institute for Geosciences and Natural Resources (BGR) notes that quakes of this magnitude occur roughly ten times a year nationwide. Part of Rhineland-Palatinate, including Ludwigshafen, lies in an elevated-risk zone, though the Lower Rhine Bay and southern Baden-Württemberg are considered more at risk. The strongest quake in the region in the past 30 years struck Waldkirch in 2004 (magnitude 5.4), while the strongest in Rhineland-Palatinate hit Nassau in 2011 (magnitude 4.4). Critical buildings such as power plants and hospitals in earthquake zones must meet additional safety requirements.