The earthquake had an estimated moment magnitude (Mw ) of 6.2 and a maximum Modified Mercalli intensity of VIII (Severe).
[1][2][3] The earthquake immediately disrupted the supply of power in Sierre, and other nearby populated centers in the Valais canton.
Many homes suffered damage to their structure, with chimneys destroyed, detached roof tiles, and broken facades.
A newly constructed church in Chippis partially collapsed and had some of the remaining structures severely damaged and unstable.
[7] Prior to the mainshock, two notable foreshocks occurred on November 10 and 13 with respective intensities V and IV on the Rossi-Forel scale.