HVO/USGS Volcanic Activity Notice
Volcano: Kilauea (VNUM #332010)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
Issued: Wednesday, September 24, 2014, 10:39 PM AKDT (20140925/0639Z)
Source: Hawaiian Volcano Observatory
Notice Number: 2014/H8
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: HI Hawaii and Pacific Ocean
Volcanic Activity Summary: Between September 19 and 24, the June 27th flow stalled 2.3 km (1.4 miles) upslope from Apa`a St. and 3.3 km (2.1 miles)from Pāhoa Village Road, but minor activity continues at several locations behind the flow front. On September 24, the stalled leading edge of the flow was approximately 16.4 km (10.2 miles) straight-line distance from the vent. Small active breakouts were observed along the tube system, and lava was observed in the lava tube near Pu‘u ‘Ō‘ō cone. Because the flow did not advance over the past few days, we do not offer a projection of its future movement. These estimates will be revised after our next overflight, now scheduled for Friday.
Pāhoa town is in the Puna District of the County of Hawai`i.
Recent Observations:
[Lava flow] Lava flow stalled at its leading edge but remained active behind the front.
Hazard Analysis:
[Lava flow] Lava flow from Pu‘u ‘Ō‘ō vent stalled its advance but remained active.
Remarks: The Pu‘u ‘Ō‘ō vent in the East Rift Zone of Kīlauea Volcano began erupting on January 3, 1983, and has continued erupting for more than 31 years, with the majority of lava flows advancing to the south. Over the past two years, lava flows have issued from the vent toward the northeast. The June 27th flow is the most recent of these flows and the first to threaten a residential area since 2010-2011. On June 27, 2014, new vents opened on the northeast flank of the Pu‘u ‘Ō‘ō cone and fed a narrow lava flow to the east-northeast. On August 18, the flow entered a ground crack, traveled underground for several days, then resurfaced to form a small lava pad. This sequence was repeated three more times over the following days with lava entering and filling other cracks before reappearing at the surface, in two of the cases farther downslope. Lava emerged from the last crack on September 6, forming a surface flow that initially moved to the north, then to the northeast, at a rate of 400 m/day (1,300 ft/day). The flow slowed thereafter and, between September 12 and 19, the rate of advancement varied, averaging 225 m/day (740 ft/day), and slowed to a stall over the weekend.
Contacts: HVO media contact
askHVO@usgs.gov
Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While this VAN is in effect, regularly scheduled updates are posted at http://hvo.wr.usgs.gov/activity/kilaueastatus.php
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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