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Volcano Watch: Kilauea activity update for November 15, 2018


Time-lapse panorama of the Kīlauea Caldera Wide Angle from HVO Observation Tower. November 8-15, 2018. Images courtesy of USGS/HVO


This 3D model of Pu‘u ‘Ō‘ō’s crater was created from thermal images during an overflight of the cone. The deepest portion of the crater is about 320 meters (1050 feet) below the crater floor that existed prior to April 30.

(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

Kīlauea is not erupting. Low rates of seismicity, deformation, and gas release have not changed significantly over the past week.

Earthquakes continue to occur primarily at Kīlauea’s summit area and south flank, with continued small aftershocks of the May 4, 2018, magnitude-6.9 quake. Seismicity remains low in the lower East Rift Zone (ERZ).

Deformation signals are consistent with magma refilling the middle ERZ. At the summit, tiltmeters have shown little change this week, except for a small DI (deflation-inflation) event.

Sulfur dioxide gas emissions at the summit averaged 50 tonnes/day as reported on October 24, and 75 tonnes/day at Puʻu ʻŌʻō on October 23. There was no sulfur dioxide detected by our instruments in the lower ERZ.

Hazardous conditions still exist at both the lower ERZ and summit. Residents in the lower Puna District and Kīlauea summit areas on the Island of Hawaiʻi should stay informed and heed Hawai‘i County Civil Defense closures, warnings, and messages (www.hawaiicounty.gov/active-al…).

The USGS Volcano Alert level for Mauna Loa remains at NORMAL.

No Hawaii earthquakes received three or more felt reports (minimum to be recounted here) this past week.

Please visit HVO’s website (volcanoes.usgs.gov/hvo) for past Volcano Watch articles, Kīlauea and Mauna Loa updates, volcano photos, maps, recent earthquake info, and more. Call 808-967-8862 for weekly Kīlauea updates. Email questions to askHVO@usgs.gov.

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