Kīlauea - Volcano Updates

Alert Level: NORMAL, Color Code: GREEN 2020-11-05 21:17:53

HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Thursday, November 5, 2020, 11:17 AM HST (Thursday, November 5, 2020, 21:17 UTC)


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

Activity Summary: Kīlauea Volcano is not erupting. Monitoring data for the month of October show variable but typical rates of seismicity and ground deformation, low rates of sulfur dioxide emissions, and only minor geologic changes since the end of eruptive activity in September 2018.

Observations: There were approximately 2100 earthquakes during the month of October at Kīlauea, an increase of roughly 50% from the number of earthquakes recorded in September. The increase was mainly due to a swarm northwest of the summit, in the area of the Nāmakanipaio campground, with most of these events occurring during October 23-25.

Over the past month, summit tiltmeters recorded 2 deflation-inflation events. The long-term trend of deformation at Kilauea's summit and middle East Rift Zone continue to show inflation, consistent with magma supply to the volcano’s shallow storage system. GPS stations on Kīlauea’s south flank continue to show elevated rates of seaward motion. HVO continues to carefully monitor all data streams along the Kīlauea East Rift Zone and south flank for important changes.

Sulfur dioxide emission rates are low at the summit, consistent with no significant shallowing of magma. Some amount of sulfur dioxide is being dissolved into shallow groundwater and the crater lake at the bottom of Halema‘uma‘u; work continues to try and quantify this process. As of November 3rd, the lake depth was approximately 48 meters or 157 feet. Sulfur dioxide emission rates are below detection limits at Puʻu ʻŌʻō and the lower East Rift Zone.

Although not currently erupting, areas of persistently elevated ground temperatures and minor release of gases are still found in the vicinity of the 2018 lower East Rift Zone fissures. These include steam (water), very small amounts of hydrogen sulfide, and carbon dioxide. These conditions are expected to be long-term. Similar conditions following the 1955 eruption continued for years to decades.

Hazards: Hazards remain in the lower East Rift Zone eruption area and at the Kīlauea summit. Residents and visitors near the 2018 fissures, lava flows, and summit collapse area should heed Hawaii County Civil Defense and National Park warnings. Lava flows and features created by the 2018 eruption are primarily on private property and persons are asked to be respectful and not enter or park on private property.

The Hawaiian Volcano Observatory (HVO) continues to closely monitor geologic changes, seismicity, deformation, and gas emissions for any sign of increased activity at Kīlauea. HVO maintains visual surveillance of the volcano with web cameras and field visits. Additional messages and alert level changes will be issued as warranted by changing activity.

Background Since June 25 2019, Kīlauea Volcano has been at NORMAL/GREEN. For definitions of USGS Volcano Alert Levels and Aviation Color Codes, see: https://www.usgs.gov/natural-hazards/volcano-hazards/about-alert-levels. Kīlauea remains an active volcano, and it will erupt again. Although we expect clear signs prior to the next eruption, the time frame of warning may be short. Island of Hawaiʻi residents should be familiar with the long-term hazard map for Kīlauea Volcano (https://pubs.usgs.gov/mf/1992/2193/) and should stay informed about Kīlauea activity.



This notice contains additional volcanoes not displayed: Hualalai (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN), Haleakala (NORMAL/GREEN), Loihi Seamount (UNASSIGNED/UNASSIGNED).

MORE INFORMATION:

Activity summary for Mauna Loa is also available by phone: (808) 967-8866

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

Webcam images: https://www.usgs.gov/volcanoes/mauna-loa/webcams

Photos/video: https://www.usgs.gov/volcanoes/mauna-loa/photo-video-chronology

FAQs of Mauna Loa: https://www.usgs.gov/volcanoes/mauna-loa/faqs

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/volcanoes/mauna-loa/monitoring

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.