HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Monday, October 17, 2016, 8:52 AM HST
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Activity Summary: Kīlauea Volcano continues to erupt at the summit and the Puʻu ʻŌʻō vent on its East Rift Zone. Tiltmeters at Kīlauea's summit recorded inflationary tilt. The lava lake surface was measured at 17 m (56 ft) below the floor of Halemaʻumaʻu Crater this morning. The 61g lava flow continues to enter the sea at Kamokuna posing no threat to nearby communities.
Summit Observations: Tiltmeters at Kīlauea's summit recorded inflationary tilt. The lava lake was measured to be 17 m (56 ft) below the rim of the Overlook Vent this morning. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php
Seismicity is within normal, background rates with tremor fluctuations associated with lava lake spattering. Average daily summit sulfur dioxide emission rates ranged from 5,400 to 6,000 metric tons/day over the past week.
Puʻu ʻŌʻō Observations: Webcam images over the past 24 hours show persistent glow at long-term sources within the crater. There were no significant changes in seismicity over the past 24 hours. The tiltmeter recorded deflationary tilt. The sulfur dioxide emission rate from all East Rift Zone vents was about 358 metric tons/day when last measured on October 14.
Lava Flow Observations: The 61g lava flow, extending southeast from Puʻu ʻŌʻō on Kīlauea's south flank continues to supply lava to the ocean at Kamokuna.
As a strong caution to visitors viewing the 61g flow ocean entry (where lava meets the sea), there are additional significant hazards besides walking on uneven surfaces and around unstable, extremely steep sea cliffs. Venturing too close to an ocean entry exposes you to flying debris created by the explosive interaction between lava and water. Also, the new land created is unstable because it is built on unconsolidated lava fragments and sand. This loose material can easily be eroded away by surf, causing the new land to become unsupported and slide into the sea. In several instances, such collapses, once started, have also incorporated parts of the older sea cliff.
Finally, the interaction of lava with the ocean creates a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs.