USGS Volcano Notice for Aviation - DOI-USGS-HVO-2023-06-29T16:15:29-07:00

(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	(20230630/1835Z)
(3) Volcano:	Kilauea (VNUM #332010)
(4) Current Color Code:	YELLOW
(5) Previous Color Code:	ORANGE
(6) Source:	Hawaiian Volcano Observatory
(7) Notice Number:	2023/H245
(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:	Kīlauea is no longer erupting. Lava supply to the Halemaʻumaʻu lava lake ceased on June 19 based upon lava lake levels and behavior of the crater floor. Sulfur dioxide emissions have decreased to near pre-eruption background levels. Accordingly, 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. Seismic activity—including eruptive tremor—in the summit region has been low since the eruption ceased. Over that period, gradual inflation has been recorded at summit tiltmeters. Overnight webcam views showed some incandescence from previously erupted lava as the lava proceeds to cool. There remains the potential for eruptive activity to resume in the near future at or near the summit of Kīlauea with little or no warning. HVO continues to closely monitor Kīlauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are still present on Kīlauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawaiʻi Volcanoes National Park guidelines. For more information about the meaning of aviation color codes, see https://www.usgs.gov/programs/VHP/volcanic-alert-levels-characterize-conditions-us-volcanoes
(12) Volcanic cloud height:	N/A
(13) Other volcanic cloud information:	N/A
(14) Remarks:	Hazard Analysis:  Levels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though Kīlauea is no longer erupting. Sulfur dioxide (SO₂) gas emissions have greatly decreased; however, local concentrations of sulfur dioxide (SO₂) or hydrogen sulfide (H₂S) may persist in downwind areas, and residents may notice odors of these gases occasionally. Significant hazards also remain around Halemaʻumaʻu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. Please see the Hawaiʻi Volcanoes National Park website for visitor information: https://www.nps.gov/havo/index.htm.
(15) Contacts:	askHVO@usgs.gov
(16) Next Notice:	Kīlauea updates will now be issued weekly on Tuesdays. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at https://www.usgs.gov/volcanoes/kilauea/volcano-updates More Information: 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-video-chronology Kīlauea lava-flow maps: https://www.usgs.gov/volcanoes/kilauea/maps Kīlauea FAQs: https://www.usgs.gov/volcanoes/kilauea/faqs