Volcano Watch: Where’s that lava headed and when will it get there?

USGS map Oblique view of an example simulation showing lava flow advance from Fissure 22 (white line segments) of the 2018 Kilauea lower East Rift Zone eruption. Color contours show the lava flow front in 1-hour increments. The simulated flow entered the ocean after 22 hours elapsed, comparable to the actual timeframe it took that lava flow to reach the ocean. View is from 2 miles (3 kilometers) offshore to the southeast at 8500 feet (2600 meter) elevation. The Google Earth basemap is from images collected after the end of the eruption.

When lava flows break out on the flanks of Kilauea or Mauna Loa, Hawaii residents and emergency management agencies want to know what to expect.