Reliable, up-to-date information on Hawaiian volcano activity is available on the website of the United States Geological Survey. The USGS monitors global seismic activity and distributes information about volcano and earthquake activity on a daily basis.
The USGS home page gives an overview of various topics and subsections available for access. For information on volcanic activity in Hawaii, click the Real Time heading on the sidebar.
Current Volcano Alerts is the link that brings up a page titled Current Alerts for U.S. Volcanoes. The first column offers information on all U.S. volcanoes. Remaining columns present other regional breakdowns of data. Clicking on the column with the heading HVO, for Hawaiian Volcano Observatory Daily Update, shows the daily information. Below the current data, website references appear for information on past volcanic activity.