Recent Kilauea Status Reports, Updates, and Information Releases HVO/USGS Volcanic Activity Notice Volcano: Kilauea (VNUM #332010) Current Volcano Alert Level: WARNING Current Aviation Color Code: ORANGE Issued: Monday, October 6, 2014, 6:42 PM HST (20141007/0442Z) Source: Hawaiian Volcano Observatory Notice Number: 2014/H13 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, with a narrow flow about 115 m (230 ft) wide moving downslope about 120 m/day (390 ft/day) since October 3. The leading edge of the flow is 1.9 km (1.2 mi) upslope from Apa`a St. along the steepest descent path and 1.7 km (1.1 mi) upslope from Apa`a St. along a straight line. At the average rate of advancement of 120 m/day, the lava could reach Apa`a St. in about 16 days. The advance rate of the June 27th flow has varied significantly during the past month, meaning this projection is subject to change. Our next overflight is scheduled for Wednesday, October 8. Pāhoa town is in the Puna District of the County of Hawai`i. Recent Observations: [Lava flow] The June 27th lava flow continued to advance northeast since October 3 at about 120 m/day (390 ft/day). The leading edge is now about 1.7 km (1.1 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, and lava is being supplied to the flow front, which is slowly advancing downslope toward Pāhoa. 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). The flow front stalled by September 22, but new breakouts behind the flow front began to push forward, overtaking the stalled front on September 29 and advancing 120 m/day (390 ft) between October 3 and 6. Contacts: HVO media contact [email protected] 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 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.
Posted on: Tue, 07 Oct 2014 09:32:05 +0000
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