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Most of the time, however, they were low intensity tremors that were only partially felt or mostly not felt at all. There were several aftershocks Thursday with a maximum magnitude of 2.3 at 7:36 am, as can be seen on the earthquake service website.
The strongest earthquake was recorded in Elm last Sunday night at 8:35 pm According to the report automatically generated by the earthquake service, it had a magnitude of 4.4, manual verification showed a magnitude of 4.3. The initially strongest aftershock came a good hour later at magnitude 3.6, as the earthquake service announced on Thursday.
According to the earthquake service, the earthquake in the Sernftal southwest of Elm had reactivated a seismic sequence that had already caused notable earthquakes in the spring. At that time, the strongest earthquake reached a magnitude of 3.1.
The overload of the seismic service website after last Sunday’s main earthquake is attributed to 80,000 hits in the first minute, it is said.
A comparably strong earthquake was recorded at Novel VS in May 2019 with a magnitude of 4.2. In that year the number of notable earthquakes had practically doubled compared to the long-term average. The strongest earthquake in recent years struck Urnerboden on March 3, 2017. At a magnitude of 4.6, it was powerful enough to cause minor damage to buildings and cause 100 aftershocks.
