Updated Map of Lava Flow Field

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. The area of the active flow field as of September 21 is shown in pink, while widening and advancement of the active flow as of October 12 is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983–2016) are shown in gray. The yellow line is the trace of the active lava tube.

The blue lines over the Pu‘u ‘Ō‘ō flow field are steepest-descent paths calculated from a 2013 digital elevation model (DEM), while the blue lines on the rest of the map are steepest-descent paths calculated from a 1983 DEM (for calculation details, see http://pubs.usgs.gov/of/2007/1264/). Steepest-descent path analysis is based on the assumption that the DEM perfectly represents the earth’s surface. DEMs, however, are not perfect, so the blue lines on this map can be used to infer only approximate flow paths. The base map is a partly transparent 1:24,000-scale USGS digital topographic map draped over the 1983 10-m digital elevation model (DEM).

Civil Defense Message – High Surf and High Wind Information Message

This is a Civil Defense message. This is a High Surf and High Wind information message for Sunday October 15 at 10:30 AM.The National Weather Service has issued a High Wind advisory for North, South, and East Hawaii Island, including the interior regions.

In addition, the National Weather Service has issued a High Surf advisory for all shores of Hawaii Island.

Hawaii Electric Light Company (HELCO) reports their work crews are responding to spot power outages in isolated areas. As in all severe weather conditions, expect possible interruptions in power, cable and telephone services.

Should power outages occur, be on the alert for malfunctioning traffic signals. Please treat flashing traffic lights as a four-way stop.

Ocean front residents and beachgoers are advised to be on the alert for possible high and dangerous surf. You are asked to exercise caution due to the unpredictability of high surf.

As a precaution, boat owners and oceanfront residents should take action to secure their property.

This email will be updated and you will be informed of any conditions that may affect your safety.