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USGS Volcano Notice for Aviation - DOI-USGS-HVO-2024-09-23T17:24:04+00:00
| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | (20240923/1812Z) |
| (3) Volcano: | Kilauea (VNUM #332010) |
| (4) Current Color Code: | YELLOW |
| (5) Previous Color Code: | ORANGE |
| (6) Source: | Hawaiian Volcano Observatory |
| (7) Notice Number: | 2024/H341 |
| (8) Volcano Location: | N 19 deg 25 min W 155 deg 17 min |
| (9) Area: | Hawaii |
| (10) Summit Elevation: | 4091 ft (1247 m) |
| (11) Volcanic Activity Summary: |
The middle East Rift Zone eruption of Kīlauea that began on Sunday, September 15 has ended and is unlikely to restart. The USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW. The eruption in and near Nāpau Crater had four eruptive phases between September 15 and September 20. The final eruptive activity from a small vent west of Nāpau Crater ended at about 10 AM HST on September 20. All observable and instrumental signs of potential for renewed eruptive activity have declined since that time. Seismicity in the area is extremely low and tremor, characteristic of magma within vents, is no longer being recorded by seismometers in the area. In addition, the ground deformation data that showed magma was moving from the summit to the middle East Rift Zone has slowed dramatically or stopped altogether. Volcanic gas emissions have decreased to near background levels. All of these factors indicate that this eruption has ended. Recent eruptive activity took place in a remote area of Kīlauea’s middle East Rift Zone, within Hawaiʻi Volcanoes National Park. No changes have been detected in the lower East Rift Zone, or Southwest Rift Zone. HVO is in close contact with Hawai‘i Volcanoes National Park and the Hawai‘i County Civil Defense Agency. Please see the Hawaiʻi Volcanoes National Park website for visitor information: https://www.nps.gov/havo/index.htm. HVO will continue to closely monitor Kīlauea and adjust the alert level/aviation color code accordingly. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are present on Kīlauea and are described below. For more information about the meaning of volcano alert levels and aviation color codes, see https://www.usgs.gov/programs/VHP/volcanic-alert-levels-characterize-conditions-us-volcanoes
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| (12) Volcanic cloud height: | N/A |
| (13) Other volcanic cloud information: | N/A |
| (14) Remarks: | Hazard Analysis: Recent lava flows and vents can remain extremely hot for months after an eruption. Hot and glassy (sharp) surfaces can cause serious burns, abrasions, and lacerations upon contact with unprotected or exposed skin. Lava near vents tends to be unstable and can easily collapse. Minor to severe ground fractures and subsidence features near the eruption site may continue to widen and offset and may have unstable overhanging edges. This uneven and rough terrain can lead to falls and other injuries. Gas levels, while greatly reduced from eruptive gas levels, can pose hazards to those close to vents. Other significant hazards also remain around Kīlauea caldera from Halemaʻumaʻu crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of the rim surrounding Halemaʻumaʻu crater, an area that has been closed to the public since early 2008. |
| (15) Contacts: | |
| (16) Next Notice: | Kīlauea updates will be issued daily. Regularly scheduled updates are posted on the HVO website at https://www.usgs.gov/volcanoes/kilauea/volcano-updates More Information:
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