Kīlauea Volcano’s summit vent within Halema'uma'u sporadically generates volcanic ash as the vent walls collapse into the receding lava lake. Rockfalls from the vent walls cause gas explosions that have produced numerous ash plumes since 2008 (when the vent first opened). As the summit lava lake continues to drop, there is also the imminent possibility that magma will interact with the water table, potentially creating phreatic (steam) explosions. These explosions could produce substantial volcanic ash plumes, that would be larger than those generated by gas explosions. The areas directly surrounding Kīlauea Volcano’s summit are most likely to be affected by these phreatic (steam) explosions. For more information, please see this video of a USGS Hawaiian Volcano Observatory presentation from May 9th at the Kīlauea Visitor Center.
Driving in ash: Driving conditions may be dangerous so if you are driving pull off the road and wait until visibility improves. Ash can also make roads slippery so reduce your speed.
Reduce your exposure:
Seek advice from a health professional: If you are concerned about your health, take advice from a health professional. See http://www.ivhhn.org/ash-protection for further information on how to protect yourself from breathing ash.
Agricultural Impacts from 2018 summit activity - Problems and solutions: https://cms.ctahr.hawaii.edu/er/volcanicEmissions
Updated: 31 May 2018