USGS HVO Kīlauea Status Report — Ground deformation and earthquake activity continues beneath Kīlauea summit region, Island of Hawai‘i

Release Date:

Ground deformation in Kīlauea’s south summit region continues, though at a lower rate than what has been seen in earlier intrusive pulses over the past week. Current earthquake activity remains low compared to the earlier pulses of this intrusive activity. The East Rift Zone remains quiet. 

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary: Kīlauea volcano is not erupting. However, intrusive activity that began on August 23 continues south of Kīlauea caldera. Ground deformation in Kīlauea’s south summit region continues, though at a lower rate than what has been seen in earlier intrusive pulses over the past week. Current earthquake activity remains low compared to the earlier pulses of this intrusive activity. The East Rift Zone remains quiet. 

Observations:

Observations over the past 24 hours suggest that magma continues to be supplied to the ongoing intrusion beneath the area south of Kīlauea’s summit. However, the current rate of ground deformation in Kīlauea summit region, within Hawaiʻi Volcanoes National Park, is significantly lower than the  rates seen in the first intrusive pulse spanning August 23-25 and the initial rates of the second intrusive pulse beginning on August 26. 

Over the past 24 hours, approximately 98 earthquakes were recorded at Kīlauea summit and south of Kīlauea caldera. Most of the earthquakes were less than magnitude 2 and occurred approximately 1-4 km (0.6-2.5 mi) below the surface. These small earthquakes have occurred at up to 8 detected earthquakes per hour. These earthquake rates are significantly lower than the rates observed during pulses in activity last week. 

At the time of this statement, activity continues but there is no indication of upward migration of earthquakes toward the surface or change in deformation that would indicate shallowing of the source intrusive activity. Accordingly, Kīlauea’s Volcano Alert Level and Aviation Color Code remain at ADVISORY/YELLOW. 

The Hawaiian Volcano Observatory (HVO) continues to closely monitor Kīlauea for changes in activity.  Beginning tomorrow, HVO will return to issuing weekly Kīlauea updates every Tuesday. HVO will issue additional messages as necessary.

For more information, see the following:

Kīlauea Status Report published August 29, 2021, 9:48 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-29T12:36:18-07:00

Kīlauea Status Report published August 28, 2021, 11:42 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-28T14:04:50-07:00

Kīlauea Information Statement published August 27, 2021, 9:54 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-27T11:30:41-07:00

“Volcano Watch” article published August 26, 2021, “New Kīlauea Summit Intrusion Draws Comparison to Past Activity”: https://www.usgs.gov/center-news/volcano-watch-new-k-lauea-summit-intrusion-draws-comparison-past-activity

Kīlauea Volcanic Activity Notice published August 26, 2021, 9:44 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-26T11:56:17-07:00

Kīlauea Daily Update published August 25, 2021, 9:23 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-25T12:10:48-07:00

Kīlauea Volcanic Activity Notice published August 24, 2021, 5:34 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-24T07:43:18-07:00

Kīlauea Information Statement published August 24, 2021, 3:09 AM HST: https://volcanoes.usgs.gov/hans2/index/notice/DOI-USGS-HVO-2021-08-24T05:43:46-07:00

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

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Subscribe to these messages: https://volcanoes.usgs.gov/vns2/

Summary of volcanic hazards from eruptions: https://www.usgs.gov/observatories/hawaiian-volcano-observatory/hazards

Recent earthquakes in Hawaiʻi (map and list): https://www.usgs.gov/observatories/hawaiian-volcano-observatory/earthquakes

Explanation of Volcano Alert Levels and Aviation Color Codes: https://www.usgs.gov/natural-hazards/volcano-hazards/about-alert-levels

CONTACT INFORMATION:

askHVO@usgs.gov

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 Hawaiʻi.