Earth ChangesMonitoring Stations Detect Small Magnitude Earthquakes at Mount Rainer During July 2025 Posted on July 28, 2025 by Administrator An earthquake swarm began at Mount Rainier, Washington, at 1:29 a.m. PDT (08:29 UTC) on July 8, 2025. An earthquake swarm is a cluster of earthquakes occurring in the same area in rapid succession. Currently, there is no indication that the level of earthquake activity is cause for concern, and the alert level and color code for Mount Rainier remain at GREEN / NORMAL.
