USGS Volcano Notice for Aviation - DOI-USGS-HVO-2026-01-12T20:31:13+00:00

(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	(20260113/0413Z)
(3) Volcano:	Kilauea (VNUM #332010)
(4) Current Color Code:	ORANGE
(5) Previous Color Code:	ORANGE
(6) Source:	Hawaiian Volcano Observatory
(7) Notice Number:	2026/H25
(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:	Episode 40 of the ongoing Halemaʻumaʻu eruption ended abruptly at 6:04 p.m. HST on January 12 after 9.7 hours of continuous lava fountaining. Additional details on this eruptive episode will be provided in the next official report. Short messages tracking the evolution of this episode and other eruptive activity can be found here: HVO - Observatory Messages \| U.S. Geological Survey. All eruptive activity was confined to Halemaʻumaʻu crater within Hawaiʻi Volcanoes National Park Timeline of eruptive episodes since December 23, 2024: https://www.usgs.gov/volcanoes/kilauea/science/eruption-information Three Kīlauea summit livestream videos are available here: https://www.youtube.com/@usgs/streams Additional short updates shared during the episode can be found here: https://www.usgs.gov/observatories/hvo/observatory-messages
(12) Volcanic cloud height:	Unknown
(13) Other volcanic cloud information:	Sulfur dioxide emission rate is typically 1,000-3,000 tonnes/day between eruptive episodes.
(14) Remarks:	Hazard Analysis:  Volcanic Gas: water vapor (H₂O), carbon dioxide (CO₂), and sulfur dioxide (SO₂) emissions can remain locally hazardous in the areas immediately downwind of the vents, even when the vents are not actively erupting. Tephra: small glassy volcanic fragments may be remobilized during windy conditions following recent eruptive episodes. Residents and visitors should minimize exposure to these fragments, which can cause skin and eye irritation. More information is available here: https://vog.ivhhn.org/sites/default/files/PelesHair_FAQs_v2.pdf. Close to the vents, the tephra material on the crater rim is prone to cracking, slumping, and small landslides that sometimes expose hot and molten material within. Lava flows: on the floor of Halemaʻumaʻu crater and the southwest side of Kaluapele, Kīlauea's summit caldera, remain hot and may slowly move in the days immediately following an eruptive episode. Other significant hazards also remain around Kīlauea caldera from Halemaʻumaʻu crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes. This underscores the extremely hazardous nature of Kīlauea's caldera rim surrounding Halemaʻumaʻu crater, an area that has been closed to the public since late 2007.
(15) Contacts:	askHVO@usgs.gov
(16) Next Notice:	HVO continues to closely monitor Kīlauea and will issue additional notices as needed based on activity. Regularly scheduled daily updates for Kīlauea are posted on the HVO website at https://www.usgs.gov/volcanoes/kilauea/volcano-updates More Information: Hawaiʻi Volcanoes National Park visitor information: https://www.nps.gov/havo/index.htm Kīlauea activity summary also available by phone: (808) 967-8862 Kīlauea webcam images: https://www.usgs.gov/volcanoes/kilauea/webcams Kīlauea photos/video: https://www.usgs.gov/volcanoes/kilauea/photo-and-video-chronology Kīlauea lava-flow maps: https://www.usgs.gov/volcanoes/kilauea/maps Kīlauea FAQs: https://www.usgs.gov/volcanoes/kilauea/faqs