The 1880-1881 eruption of Mauna Loa consisted of two main phases, a summit eruption and a rift zone eruption six months later. The latter was a nearly nine-month-long march that threatened the city of Hilo.

Jul 13, 2017 · For instance, during the 1880–1881 eruption of Mauna Loa, flows initially traveled south towards Kīlauea, but later, northeast towards Hilo. Although most of the NERZ source vents are more than 19 miles (30 km) from Hilo, one branch of …

Nov 21, 2019 · The 1880-1881 eruption of Mauna Loa produced lava flows that came within 1.7 km (1.1 mi) of the Hilo Bay shoreline. This painting by Charles Furneaux, "Night View 1880–1881, Eruption from Hilo Bay," illustrates the first two flows as they would have been in November 1880.

Nov 8, 2019 · The oldest Mauna Loa eruption in written history is said to have taken place in 1780. Testimony was taken from Keaweehu, a Hawaiian guide in the Wilkes party who occupied and mapped the summit from 1840 to 1841.

This computer-generated image of the Island of Hawai‘i shows the lava flows emanating from Mauna Loa that have been recorded since 1832. View is towards the west with the city of Hilo at bottom center, the southwest tip of the island at upper left, and the Kona coast at the top.

Jun 9, 2020 · The updated Kīlauea page shows how geologic mapping and dating of the volcano’s surface tells of cyclic eruption styles, transitioning from explosive eruptions to effusive phases.

Nov 6, 2019 · The Mauna Loa eruption sequence of 1880–81 consists of two eruptions. The May 1880 eruption in Mokuʻāweoweo at the summit of Mauna Loa lasted just a few days and was followed 6 months later by three lava flows that issued from vents along the Northeast Rift Zone.

Jun 4, 2020 · Map showing the subaerial extents of historical lava flows from Mauna Loa. Lava flow hazard zones and districts of the County of Hawai‘i are also depicted.

Eruptions of Mauna Loa most often will begin in the summit caldera and then later migrate to a rift zone. Mauna Loa has erupted 34 times since 1843— averaging once every five years. Over a longer period of time, the past 3,000 years, its estimated to have erupted once every six years.

Dec 31, 2015 · In the past 160 years, five volcanic eruptions have sent lava flows to within ten miles of Hilo Bay. The flow from the 1880-1881 Mauna Loa eruption came the closest, posing an immediate threat to Hilo and its beautiful bay.