Eyewitnesses drawn to the crater rim were excited, reverent, and watchful. The eruption onset was observed near and far via technology. The USGS Hawaiian Volcano Observatory (HVO) was onsite and online, transmitting scientific information as the eruption response mounted.
Geodetic surveys measure the change in shape of our volcanoes due to changes in magma supply and storage. The USGS Hawaiian Volcano Observatory has a long history of using many different types of instruments and technologies over the decades to detect these changes.
HONOLULU — Kilauea Volcano has stopped erupting.
HONOLULU — A magnitude-4.2 earthquake struck Sunday beneath the south flank of Kilauea Volcano, the U.S. Geological Survey’s Hawaiian Volcano Observatory reported.
Kilauea’s summit lava lake in Halemaʻumaʻu is approaching its five-month anniversary on Thursday, May 20, while the water lake that occupied the crater for the previous seventeen months seems like a distant memory.
It’s 5 a.m. and a somewhat sleepy scientist is getting ready to leave his home in Honomu and head to the USGS Hawaiian Volcano Observatory (HVO) office on Kamehameha Avenue in Hilo. Yawning — and not quite fully caffeinated — he says goodbye to the dog following him around the kitchen who’s wondering why they’re up so early.
Kilauea’s East Rift Zone has been particularly newsworthy over the past 40 years with Pu‘u ‘O‘o erupting nearly continuously from 1983 to 2018 followed by the 2018 eruption that started in Leilani Estates. The summit of Kilauea also saw eruptions in April and September of 1982 and the 2008-18 lava lake which drained and was followed by impressive collapses from May to September 2018. The newly enlarged Halema‘uma‘u Crater is currently filling with lava from an eruption that began in December of 2020. The frequent summit and East Rift Zone eruptions often seem to overshadow Kilauea’s Southwest Rift Zone, which extends southwest from Halema‘uma‘u to the coast about 3 miles southeast of Pahala.
A new project at the USGS Hawaiian Volcano Observatory (HVO) is once again making use of old aerial photographs and field notes that were used to make geologic and hazard maps. Buried within hundreds of old mapping photos and field notes are the locations and thicknesses of several ash deposits on the flanks of Mauna Loa that have never been fully quantified.
Mauna Loa has been in the news lately, as the volcano continues to awaken from its slumber. While an eruption of Mauna Loa is not imminent, now is the time to revisit personal eruption plans. Similar to preparing for hurricane season, having an eruption plan in advance helps during an emergency.
Pele returned to the summit of Kilauea on the evening of Dec. 20, 2020. Incredible video documents the start of the new eruption in Halema’uma’u and the dynamic ongoing activity. There was no significant change that suggested lava would erupt again so rapidly, but there were subtle signs of restless behavior around Kilauea’s summit in the months prior to the eruption.
“When will Mauna Loa erupt next?” This was the title of a Volcano Awareness Month video presentation released by the USGS Hawaiian Volcano Observatory in January. This was also the topic of discussion among HVO scientists last week following the detection of slight changes in ground deformation and seismicity at the summit of Mauna Loa.
Kilauea’s current lava lake formed on Dec. 20, 2020, and rose rapidly within Halema’uma’u crater during the dynamic first week of the ongoing summit eruption. Near the end of December, the eruption stabilized and the lava lake has been slowly changing since then.