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    May 2018
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Lava Flow Crosses Highway, Enters Ocean

This is a Hawai‘i County Civil Defense Message for Saturday, May 19, 2018, at 11 p.m.

Hawaiian Volcano Observatory continues to monitor active flows. Flow front #1 has crossed Highway 137 at the 13-mile marker and has entered the ocean. Flow front #2 is approximately 400 Meters from Highway 137. Highway 137 is closed between Kamali‘i Road and Pohoiki Road.  Kamali‘i Road is closed between Highway 130 and Highway 137. Residents in the area have been evacuated. All persons are asked to stay out of the area.

The lava has entered the ocean. Be aware of the laze hazard and stay away from any ocean plume.

This thermal map shows the fissure system and lava flows as of 12:15 pm on Saturday, May 19. The two primary lava flows originate from the Fissure 20-22 area, and crossed Pohoiki Road over the past day. The flow front position based on a 6:40 p.m. update is shown by the red circle. The black and white area is the extent of the thermal map. Temperature in the thermal image is displayed as gray-scale values, with the brightest pixels indicating the hottest areas. The thermal map was constructed by stitching many overlapping oblique thermal images collected by a handheld thermal camera during a helicopter overflight of the flow field. The base is a copyrighted color satellite image (used with permission) provided by Digital Globe. (USGS Map)

  • Laze is formed when hot lava hits the ocean sending hydrochloric acid and steam with fine glass particles into the air.
  • Health hazards of laze include lung, eye and skin irritation.
  • Be aware that the laze plume travels with the wind and can change direction without warning.