09-15-2014, 03:49 PM
When Mauna Loa does erupt, it will probably be from the southwest rift zone, which has been quiet since 1950. And remember what happened last time it erupted there - the flow overran houses and cut Highway 11 within 3 hours of starting (in the middle of the night).
http://hvo.wr.usgs.gov/maunaloa/history/50_06_01/
http://hvo.wr.usgs.gov/maunaloa/history/50_06_01/