I was under the impression that it was still under the park itself. Can you clarify?
ETA: Under Yellowstone Lake.
I wish I could clarify with absolute certainty, however in early 2009 when they did a seismic refraction survey, the magma chamber then was 20% bigger than their largest estimation.
Since that 2009 mapping, there has been the extraordinary deformation that occurred, the barrage of 2,000+ earthquakes in January of 2000, and now these harmonic tremors with other signatures of fracturing rock, both from solid rock, and also hybrid signatures of rock that is semi-melted and/or surrounded by magma. And again this goes on well beyond the park into the Tetons on the east, and quite a lot further into Idaho and extending even 200 miles into nothern Utah.
This is ether a major expanded magma chamber, or the intrusion of one, or several adjacent magma chambers fed by the evident W/SW extension of the primary plume body itself.
While the mere appearance of harmonic tremors alone might not be enough to have a Geo team rush up to Yellowstone, the extension of those tremors outside the park, along with clear evidences of rock fracturing seismic events, is clear cause for immediate concern.
3-D model of 2009 Refraction Mapping of Magma Chamber "Magma Pocket 20% Larger Than Thought"JAVA Animation of Magma chamber and Plume.The above image shows the ash outfall of the eruptions various million years ago. What we're looking at is, theoretically, an eruption capable of being the size of those two biggest eruptions, ........ combined,