I am going to push again to call the October 14 Giantess start time at 04:48 MDT. The seismic signal at that time looks much more like the one that accompanied the July 6 eruption at 07:13. Both seismograms are attached for comparison. According to the USGS earthquake catalog, the event at 07:02 MDT was a magnitude 2.0 earthquake in the vicinity of the Heart Lake trail. The evening events also look like earthquakes, possibly part of a swarm in the same location (they aren't on the map yet). The apparent activity in middle of the day is most likely caused by weather rather than earthquakes or geysers. Michael Goldberg Michael.Goldberg at uc.edu -------------- next part -------------- A non-text attachment was scrubbed... Name: July6Seismo.gif Type: image/gif Size: 132430 bytes Desc: URL: </geyser-list/attachments/20091015/0d5cfd1a/attachment.gif> -------------- next part -------------- A non-text attachment was scrubbed... Name: October14Seismo.gif Type: image/gif Size: 125156 bytes Desc: URL: </geyser-list/attachments/20091015/0d5cfd1a/attachment-0001.gif>