Alert Level: NORMAL, Color Code: GREEN
2018-12-08 03:16:31 UTC
HAWAIIAN VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Friday, December 7, 2018, 5:16 PM HST (Saturday, December 8, 2018, 03:16 UTC)
HUALALAI VOLCANO (VNUM #332040)
19°41'31" N 155°52'12" W, Summit Elevation 8278 ft (2523 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
No significant activity occurred at the volcano in November. Three earthquakes were located around the edges of the volcano. HVO's continuously recording Global Positioning System (GPS) receiver atop Hualālai recorded no significant deformation.
Background: Hualālai is the third most active volcano on the Island of Hawai`i and typically erupts 2 to 3 times per 1,000 years. Hualālai last erupted in 1801 and, more recently, had a damaging seismic swarm in 1929 that was probably the result of a shallow intrusion of magma. Hualālai Volcano is monitored by one continuous GPS instrument and a seismometer located southeast of the summit as well as several instruments on nearby flanks of Mauna Loa and Mauna Kea. Key sites on Hualālai and West Mauna Loa are resurveyed using GPS receivers every few years to detect any changes in the volcano's shape.
This notice contains additional volcanoes not displayed: Mauna Loa (NORMAL/GREEN), Mauna Kea (NORMAL/GREEN), Haleakala (NORMAL/GREEN), Lo`ihi (UNASSIGNED/UNASSIGNED).
Activity summary also available by phone: (808) 967-8862
Subscribe to these messages: https://volcanoes.usgs.gov/vns2/
Webcam images: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_webcams.html
Lava flow maps: https://volcanoes.usgs.gov/volcanoes/kilauea/multimedia_maps.html
Definitions of terms used in update: https://volcanoes.usgs.gov/volcanoes/kilauea/extra/definitions.pdf
Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō ) eruptions:
Summary of volcanic hazards from Kīlauea eruptions:
Recent earthquakes in Hawaiʻi (map and list):
Explanation of Volcano Alert Levels and Aviation Color Codes:
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.