DOI-USGS-HVO-2012-10-08T07:32:29-10:00 HawaiianVolcanoObservatory@vulcan4. 2012-10-08 07:32:29 Actual Alert Public Geo Unknown Minor Unlikely 2012-10-08 07:32:29 2012-10-09 07:32:29 Hawaiian Volcano Observatory Haleakala Monthly Update There were no detected earthquakes and no other significant changes. <b>Background:</b> The most recent eruption on Haleakala was probably between A.D. 1480 and 1600. Haleakala Volcano is monitored by a continuous GPS instrument and a seismometer located near the southwest edge of the crater. Key sites on Haleakala are resurveyed using GPS receivers every few years to detect any changes in the volcano's shape. http://hvo.wr.usgs.gov askHVO@usgs.gov Volcano Alert Level=NORMAL Aviation Color Code=GREEN Haleakala volcano Hawaii and Pacific Ocean HI 20.708 -156.25 CAVW=1302-06-