Available Weekly Reports
There are no activity reports for Momotombo.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|[ 1918 Apr ]||[ Unknown ]||Uncertain||1|
|1905 Jan 16||1905 Jan 21||Confirmed||2||Historical|
|1902 Mar 31 ± 30 days||Unknown||Confirmed||2||Historical|
|1886 May 19 (?)||1887 (?)||Confirmed||2||Historical|
|[ 1885 Oct ]||[ Unknown ]||Uncertain||1|
|1882 Sep 9||Unknown||Confirmed||2||Historical|
|1878 Oct 14 (?)||Unknown||Confirmed||2||Historical|
|1854 Feb||1854 Mar||Confirmed||2||Historical|
|[ 1609 ]||[ Unknown ]||Uncertain|
|1100 ± 50 years||Unknown||Confirmed||Radiocarbon (uncorrected)|
|800 BCE ± 50 years||Unknown||Confirmed||4||Radiocarbon (uncorrected)|
|2550 BCE ± 300 years||Unknown||Confirmed||Radiocarbon (uncorrected)|
Momotombo is a young, 1297-m-high stratovolcano that rises prominently above the NW shore of Lake Managua, forming one of Nicaragua's most familiar landmarks. Momotombo began growing about 4500 years ago at the SE end of the Marrabios Range and consists of a somma from an older edifice that is surmounted by a symmetrical younger cone with a 150 x 250 m wide summit crater. Young lava flows from Momotombo have flowed down the NW flank into the 4-km-wide Monte Galán caldera. The youthful cone of Momotombito forms a 391-m-high island offshore in Lake Managua. Momotombo has a long record of strombolian eruptions, punctuated by occasional larger explosive activity. The latest eruption, in 1905, produced a lava flow that traveled from the summit to the lower NE base. A small black plume was seen above the crater after an April 10, 1996 earthquake, but later observations noted no significant changes in the crater. A major geothermal field is located on the southern flank of the volcano.