Most folks slide into the new year with some sleep and a hangover. The Custer County community of Challis has a habit of rumbling into a new year. 2015 began with a series of tremors in Challis, including a 4.9-magnitude earthquake. And, right on cue, two separate quakes shook Challis on New Year's Eve, following dozens of small tremors that have hit the community since mid-December. Most of the quakes ranged between 1.5- and 2.5-magnitude. A separate earthquake (2.3-magnitude) hit the town of Salmon on December 29.
Some Challis residents vividly recall the 1983 Borah Peak earthquake, which measured 6.9 on the Richter scale, the most significant earthquake recorded in Idaho. Two Challis children were killed by falling masonry as they walked to school, and the Challis-Mackay region suffered $12.5 million in damage following the 1983 quake.
Meanwhile, the Coeur d'Alene Press reports that a separate series of earthquakes rumbled through northern Idaho in 2015, starting with a 4.1-magnitude in April and stretching all the way to late November. The Press reports that nearly 100 people reported feeling the November quake from 14 different ZIP codes, all in northern Idaho.