TRUCKEE, Calif. (KOLO) - Dozens of earthquakes and aftershocks hit California early Tuesday, northwest of Truckee.
The Nevada Seismological Laboratory reports two local magnitude 4.0 and 4.1 earthquakes in a swarm of 40 quakes about 13 miles northwest of Truckee. The two largest quakes were separated by seven minutes.
The swarm, which began about 2AM June 27, 2017 and lasted several hours, is not directly associated with mapped faults, but in a step-over between the Mohawk Valley and the Polaris fault zones along the eastern Sierra Basin-Range boundary region.
The largest earthquakes were reported felt in the Truckee, Lake Tahoe, Reno and western Sierra region. Seismologists say there is a slight increase in the probability of a larger quake during an ongoing sequence of earthquakes such as this one, and they are continuing to monitor the activity.
“I like to remind everyone that it is always appropriate to make a plan for what to do during a disaster, in this case: secure your home before; drop, cover, hold on during; and assess damage after,” says Aaron Kenneston, with Washoe County Emergency Management and Homeland Security Program. “Assemble a kit with at least 72 hours of water, food, first aid supplies, flashlight and battery-powered radio in case of utility disruption, and stay informed about our earthquake risks.”
KOLO 8 has heard of no damage reports.
Here are some quake safety-related links: