Source of the pumice raft in the Kermandec islands discovered: Havre Seamount

The source of the recently observed giant pumice raft in the Kermadec Islands was most likely identified as the largely unknown Havre Seamount.
Erik Klemetti (Eruptions Blog) and Robert Simmon (NASA Earth Observatory) "looked back through images of the area and found an ash plume and the beginning of a pumice raft on July 18, 2012, between Macauley Island and Volcano W."
According to Klemetti, the eruption appears to have started with an explosive phase during around 18-20 July, then paused and probably resumed around or before 11 August, when the recent pumice was observed.
It appears thus that a new active volcano which is not even listed by the Smithsonian GVP was identified.

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• Havre Seamount: The Source of Kermadec Island Pumice Raft? (Eruptions Blog)