MT HOOD – A swarm of earthquakes have been reported on Northern Oregon’s Mount Hood over the past two days.

According to the U.S. Geological Survey (USGS), there have been around 40 quakes registered in an area five miles south of the volcano’s summit since Monday afternoon.

Scientists at the USGS say the series of temblors are at a depth of two to three miles and none have been large enough to be felt by humans, with the biggest coming in at a magnitude 2.1 on the Richter scale.

USGS officials say this isn’t the first such event at Mount Hood, which has experienced similar swarms over the past 20 years.

Evidence from previous studies on these events and general seismicity at the 11,250-foot peak are enough for scientists to conclude that this week’s swarm is occurring on tectonic fault lines and is not related to any volcanic process which would indicate an impending eruption.

In spite of their high degree of confidence that the mountain is not about to blow its top, seismologists and volcanologists with the Pacific Northwest Seismic Network and the Cascades Volcano Observatory will be keeping a closer eye on Mount Hood in the days ahead.