HVO Status Report 20180827_1538

Subject: HVO Status Report 20180827_1538

HAWAIIAN VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Monday, August 27, 2018, 3:38 PM HST (Tuesday, August 28, 2018, 01:38 UTC)

KILAUEA VOLCANO (VNUM #332010)

19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Kīlauea summit and lower East Rift Zone

Seismicity and ground deformation are negligible at the summit of Kīlauea Volcano. On the volcano’s lower East Rift Zone (LERZ), a small lava pond was visible deep within the fissure 8 cone on Saturday morning (8/25) but lava was no longer visible in the cone this morning. A single small lava dribble was oozing lava into the ocean from the Kapoho Bay lobe from an HVO overflight this morning and a sand bar still blocks the Pohoiki boat ramp. Sulfur dioxide emission rates at both the summit and LERZ are drastically reduced; the combined rate is lower than at any time since late 2007. On Tuesday (8/21), the SO2 emissions from the LERZ were too low to measure although SO2 smells were noticed.

The hurricane/tropical storm had little effect on the eruption aside from minor rockfalls at the summit and increased steaming from Puʻu ʻŌʻō and LERZ vents; however, HVO lost communication with several monitoring stations on the east side of the island in the last two days but the losses only slightly reduce our ability to assess volcanic conditions. Whiteout conditions could occur on the new lava field due due to steam produced by heavy rainfall on still-hot lava flows.

The Hawaiian Volcano Observatory (HVO) will continue to closely monitor Kīlauea’s seismicity, deformation, and gas emissions for any sign of reactivation, and maintain visual surveillance of the summit and LERZ as best we can. Ground and drone crews are in the field today but continue to be hampered by weather conditions.

HVO will continue to issue daily updates and additional messages as needed. The next update will be issued tomorrow morning unless significant changes occur.

MORE INFORMATION

Subscribe to these messages: https://volcanoes.usgs.gov/vns2/

Webcam images: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_webcams.html

Photos/Video: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_chronology.html

Lava Flow Maps: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html

Definitions of terms used in update: https://volcanoes.usgs.gov/volcanoes/kilauea/extra/definitions.pdf

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō ) eruptions:
https://volcanoes.usgs.gov/volcanoes/kilauea/extra/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
https://volcanoes.usgs.gov/volcanoes/kilauea/extra/hazards.pdf

Recent Earthquakes in Hawai’i (map and list):
https://volcanoes.usgs.gov/hvo/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
https://volcanoes.usgs.gov/activity/alertsystem/index.php
https://pubs.usgs.gov/fs/2006/3139/

CONTACT INFORMATION:

askHVO

The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.

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