(Timberline Lodge, OR) -- There was a swarm of small earthquakes under Mt. Hood on Tuesday. Mt. Hood is an active volcano and there's usually at least one small earthquake a week. More than two dozen small earthquakes were recorded. It started around 2:30 Tuesday afternoon with a magnitude three-point-zero quake followed by a two-point-six. The other earthquakes were much smaller. Similar earthquake swarms have happened under the mountain in the past.