Seismo-Watch Monthly Report
See Earthquake Report Below:

Yellowstone Earthquake Report: May 1997


Most of Yellowstone's activity in May occurred during the first week than dropped considerably during the Balance of the month.

A moderate earthquake swarm began with a M3.0 temblor at 7:06 a.m. the first day of May about 4 miles north of Madison Junction, in Upper Cougar Creek. During the next two days, 25 quakes were detected, however, only one registered in the M2 range. A few other events triggered in the same area later the month.

A minor flurry of activity occurred May 8-11 about 6 miles west of West Yellowstone near Hebgen Lake and included three quakes in the M2 range. Interestingly, no activity was recorded in the southern portion of the caldera.

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