As each month, the Yellowstone Volcano Observatory publishes its newsletter. Yellowstone being a volcano, so it is normal that I publish this newsletter.
However, it should be noted: The term « background level » means the lowest level of activity. (here residual). NO, Yellowstone is not going to wake up, not tomorrow either. Drink your beer in peace.
During January 2016, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 70 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a micro earthquake of magnitude 2.5 on January 30, 11:18 PM MST, located 5 miles south southwest of Lake, WY.
January 2016 seismicity was characterized by two earthquake swarms.
1) A small swarm of 16 earthquakes occurred January 30 – 31 (MST) 5 miles south southwest of Lake, WY. The swarm includes the largest earthquake in January (described above).
2) A smaller swarm of 10 earthquakes occurred January 25 – 27. The largest swarm earthquake (magnitude 2.0) occurred January 26, 05:59 AM MST, located 14 miles north northwest of Lake, WY.
Earthquake sequences like these are common and account for roughly 50% of the total seismicity in the Yellowstone region.
Overall, Yellowstone earthquake activity in January was within background levels.
GPS stations in Yellowstone continue to show little or no ground movement.
http://www.unavco.org/instrumentation/networks/status/pbo/data/WLWY (click on Static Plots / Time Series)
The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
February 02, 2016. Yellowstone , United States :
44°25’48 » N 110°40’12 » W,
Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Source : YVO