Dozens of mini-earthquakes have rattled Oregon's Mount Hood sinc - KTIV News 4 Sioux City IA: News, Weather and Sports

Dozens of mini-earthquakes have rattled Oregon's Mount Hood since Sunday

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(KGW) A swarm of small earthquakes on Oregon's Mount Hood has captured the attention of state geologists and rattled the nerves of some nearby residents.

Since Sunday geologists have recorded 31 tremors. The largest one was only a magnitude 2.3, barely big enough to feel.

But it's not the size of the quakes that's intriguing the scientists, it's where they're happening. They seem to be occurring right alongside a recently discovered fault.

"The fact that the earthquakes are defining a fault means that that fault is active and if it can make a magnitude 2.3 it can probably make a much larger earthquake," explained Ian Madin Chief Scientist with the Oregon Department of Geology and Mineral Industries.

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