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On May 23, 2019, a minor earthquake swarm broke out just barely to the north of Yellowstone Lake. Information is given below, along with the helicorder plots and custom plot images generated by SWARM.
CLICK HERE to visit the USGS earthquake map that details the reported events of this swarm.
May 23, 2019 swarm
Start of swarm: 10:06UTC
End of swarm: 11:17UTC
Total earthquake count (includes even the tiniest, unreported events): No more than 45 micro-quakes, many being extremely tiny.
Reported count: 7
Largest reported earthquake of this swarm: M2.5 at 4.9km depth
Largest amplitude: ~70,400 (B208-EHZ), ~19,500 (YML-EHZ)
As usual, I will not detail every single event in the plots below. However I will try to detail most of them.
About 5 1/2 hours or so after this swarm at Yellowstone Lake, two small events struck just west of West Yellowstone, MT. They both only received 1 felt report and the event pages and plots are shown below.
Please click a post title to view the data pertaining to that event!