Swarm of small earthquakes near Utah-Arizona border enters 4th week
ksl.com
A swarm of dozens of small earthquakes shaking a sparsely populated part of northwestern Arizona is entering its fourth week.
ksl.com
A swarm of dozens of small earthquakes shaking a sparsely populated part of northwestern Arizona is entering its fourth week.

The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.

