HVO/USGS Volcanic Activity Notice
Volcano: Kilauea (VNUM #332010)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: ORANGE
Issued: Monday, October 20, 2014, 9:45 PM AKDT (20141021/0545Z)
Source: Hawaiian Volcano Observatory
Notice Number: 2014/H19
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: The June 27th flow remains active. The flow front has not advanced downslope since October 17, but there are several breakouts within about 1.3 km (0.8 mi) upslope of the front. Along the south side of the flow, a narrow breakout has moved about 80 m/day in the past week, and could overtake the distal tip of the flow in the next couple of days. The flow front remains about 1.4 km (0.9 mi) upslope from Apa`a St. along the steepest descent path and 1.1 km (0.7 mi) upslope from Apa`a St. along a straight line. Lava discharge from Pu'u 'Ō'ō into the June 27th lava tube remains low. Because the flow has not advanced in the past few days, we do not offer a future projection of the flow's advance.
Pāhoa town is in the Puna District of the County of Hawai`i.
Recent Observations:
[Lava flow] The June 27th lava flow has not advanced since October 17. The leading edge remains about 1.1 km (0.7 mi) straight-line distance from Apa`a St.
Hazard Analysis:
[Lava flow] The June 27th lava flow from the Pu‘u ‘Ō‘ō vent is active, with several breakouts within 1.3 km (0.8 mi) upslope of the stalled flow front.
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 (437 yd). The flow slowed thereafter and, between September 12 and 19, the rate of advancement varied, averaging 225 m/day (246 yd). The flow front stalled by September 22, but new breakouts upslope overtook the stalled front on September 29. During the past 2 weeks, advance rates of the flow front have slowed from 120 m/day (131 yd) to less than 25 m/day (27 yd).
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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