Small-scale map of June 27th flow in Kīlauea's ERZ

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone in relation to lower Puna. The area of the flow on September 19, 2014, at 11:45 AM is shown in pink, while widening and advancement of the flow as mapped on September 24 at 10:45 AM is shown in red. The distal tip of the flow was inactive, but small breakouts were scattered across the surface of the flow from just behind the front to about 4 km (2.5 miles) upslope. The most active of these breakouts was advancing northeast from the north edge of the flow about 750 m (820 yards) back from the stalled front, but was fairly weak. It was 15.7 km (9.8 miles) straight-line distance from the vent.

The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM). For an explanation of down-slope path calculations, see: http://pubs.usgs.gov/of/2007/1264/. Down-slope 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 indicate approximate flow path directions. All older Pu‘u ‘Ō‘ō lava flows (1983-2014) are shown in gray; the yellow line marks the lava tube.