Strong explosion produces pyroclastic flows at San Cristobal volcano, Nicaragua

san cristobal volcano eruption july 5 2023 f

Nicaragua’s San Cristobal volcano erupted on July 5, 2023, producing pyroclastic flows and huge amounts of ash.

The eruption generated concern among the authorities and nearby population, according to local media reports.1

The Nicaraguan Institute of Territorial Studies (INETER) has intensified monitoring of the volcano to assess its behavior and guarantee the safety of nearby population.

san cristobal volcano eruption july 5 2023 a
Image credit: SINAPRED Nicaragua
san cristobal volcano eruption july 5 2023 c
Image credit: SINAPRED Nicaragua
san cristobal volcano eruption july 5 2023 b
Image credit: SINAPRED Nicaragua
san cristobal volcano eruption july 5 2023 bg
Image credit: INETER

The last eruption of this volcano took place on June 26, 2022, producing gas-and-ash plume that rose 1.5 km (4 900 feet) above the crater.

Geological summary

The San Cristóbal volcanic complex, consisting of five principal volcanic edifices, forms the NW end of the Marrabios Range. The symmetrical 1 745 m (5 725 feet) high youngest cone, named San Cristóbal (also known as El Viejo), is Nicaragua’s highest volcano and is capped by a 500 x 600 m (1 640 x 1 970 feet) wide crater.

El Chonco, with several flank lava domes, is located 4 km (2.5 miles) W of San Cristóbal; it and the eroded Moyotepe volcano, 4 km (2.5 miles) NE of San Cristóbal, are of Pleistocene age.

Volcán Casita, containing an elongated summit crater, lies immediately east of San Cristóbal and was the site of a catastrophic landslide and lahar in 1998. The Plio-Pleistocene La Pelona caldera is located at the eastern end of the complex.

Historical eruptions from San Cristóbal, consisting of small-to-moderate explosive activity, have been reported since the 16th century. Some other 16th-century eruptions attributed to Casita volcano are uncertain and may pertain to other Marrabios Range volcanoes.2

References:

1 INETER monitorea actividad del volcán San Cristóbal en Chinandega tras expulsión de cenizas – Canal4 – July 5, 2032

2 San Cristobal – Geological summary – GVP

Featured image credit: INETER

If you value what we do here, create your ad-free account and support our journalism.

Share:

Commenting rules and guidelines

We value the thoughts and opinions of our readers and welcome healthy discussions on our website. In order to maintain a respectful and positive community, we ask that all commenters follow these rules:

  • Treat others with kindness and respect.
  • Stay on topic and contribute to the conversation in a meaningful way.
  • Do not use abusive or hateful language.
  • Do not spam or promote unrelated products or services.
  • Do not post any personal information or content that is illegal, obscene, or otherwise inappropriate.

We reserve the right to remove any comments that violate these rules. By commenting on our website, you agree to abide by these guidelines. Thank you for helping to create a positive and welcoming environment for all.

Leave a reply

Your email address will not be published. Required fields are marked *