A 1.4 magnitude tremor was detected North of the Madison Valley machine today at  11:36:55  MDT.

The USGS data can be found at:

https://earthquake.usgs.gov/earthquakes/eventpage/mb80423319/executive

Summary:

Magnitude 1.4 - 34km SSW of Three Forks, Montana
2020-05-17 17:36:55 (UTC)   45.618°N 111.753°W   0.4 km depth   Event ID 80423319

 The following is a 10 second moving average of the combined probability data, with the first red star depicting the initial changes in probability statistic and the second start indicating the onset of the actual tremor, 336 seconds later. Data points are recorded from 11:00 to 12:00 every 333 msec in this plot.

These are the un-averaged probability data points from that time: