Puu O-o- to Napau crater





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Published on Mar 8, 2011

Temporary webcam http://volcanoes.usgs.gov/hvo/cams/NC...

Tuesday, March 8, 2011 7:39 AM HST (Tuesday, March 8, 2011 17:39 UTC)

This report on the status of Kilauea volcanic activity, in addition to maps, photos, and Webcam images (available using the menu bar above), was prepared by the USGS Hawaiian Volcano Observatory (HVO). Hawai`i Volcanoes National Park status can be found at http://www.nps.gov/havo/ or 985-6000. Hawai`i County Kalapana Viewing Area status can be found at 961-8093. All times are Hawai`i Standard Time.

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

Activity Summary for past 24 hours: There have been significant changes as Kilauea volcano continued to erupt at two locations: On the east rift zone, a fissure eruption that started March 5 continued intermittently at locations approximately 2-3.5 km WSW of Pu`u `O`o. At the summit, the lava lake level remained deep below the rim of the vent inset within the east wall of Halema`uma`u Crater; several rim collapses produced dust plumes. Summit and east rift zone seismicity remained significantly elevated.

Past 24 hours at Kilauea summit: The lava level remained very deep (estimated more than 200 m or 655 ft) and mostly out of webcam view within the vent inset within the east wall of Halema`uma`u Crater. There were at least three rim collapses, each enlarging the vent and producing dense, dark plumes of rock dust. The summit tiltmeter network recorded slowing deflation. Seismic tremor levels remained significantly elevated.

Three earthquakes were strong enough to be located within Kilauea volcano all beneath Halema`uma`u Crater.

The summit gas plume is robust and moving to the southwest this morning. The most recent (preliminary) sulfur dioxide emission rate measurement was 1,100 tonnes/day on March 7, 2011.

Past 24 hours at the middle east rift zone vents: The fissure eruption that started March 5 continued through this morning with vigorous spattering from at least two locations along the fissure which is located between the west flank of Pu`u `O`o and the east rim of Napau Crater within Hawai`i Volcanoes National Park. Low fountains and spattering fed several temporary lava flows advancing to the south within the park.

The most recent (preliminary) sulfur dioxide emission rate measurement was 10,000 tonnes/day on March 7, 2011 from all east rift zone sources.

Preliminary satellite radar interferometry as of March 7 showed patterns suggesting that the new fissure eruption is the surface expression of a dike possibly larger than the one that fed the January 1997 eruption and the June 2007 intrusion/eruption. The tiltmeter on the north flank of Pu`u `O`o recorded slowing deflation. Seismic tremor levels remain significantly elevated and variable in this part of the rift zone.

There was no active lava on the TEB or Nov. 29 flow fields nor within Pu`u `O`o Crater.

Hawai`i Volcanoes National Park message: In response to the current volcanic conditions, Hawai'i Volcanoes National Park has closed the Chain of Craters Road and all east rift zone and coastal trails, along with the Kulanaokuaiki campground, until further notice.

Hazard Summary: East rift vents and flow field - near-vent areas could erupt or collapse without warning; potentially-lethal concentrations of sulfur dioxide gas are present within 1 km downwind of vent areas. Kilauea Crater - explosive events are capable of ejecting rocks and lava several hundred meters (yards) from the Halema`uma`u vent; ash and potentially-lethal concentrations of sulfur dioxide are present within 1 km downwind.

Maps, photos, Webcam views, and other information about Kilauea Volcano are available at http://volcanoes.usgs.gov/hvo/activit.... A daily update summary is available by phone at (808) 967-8862.

A map with details of earthquakes located within the past two weeks can be found at http://tux.wr.usgs.gov/

A definition of alert levels can be found at http://volcanoes.usgs.gov/activity/al...


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