Special Volcanological Bulletin , Guatemala October 21, 2015, 14:00 (GMT)
Santiaguito volcano lahars.
Activity type : Peléenne
Morphology: dacitic domes Complex.
Geographical location: Latitude 14 ° 44’33 N ?; Longitude 91 ° 34’13 W. ?
Height: 2,500 meters.
The constant rainfall in the country, are currently generating lahars moderate in the tributaries of the river Nima I and San Isidro.
Regarding the Nima I river, it is possible to describe it as a moderate lahar. This lahar transports semi-dense material with particles ranging from « fines » to blocks having a diameter of 1.5 meters, the flow appears heat, generating production of steam all the way to a height of about 75 meters. The channel through which passes these materials is 18 meters wide and 1.5 meters deep.
Regarding the Rio San Isidro, it is classified as a moderate to high lahar , which transports particles and blocks of about 1.5 meters in diameter and a hot flow.
The rains are continuing and generate floods from rivers that flow to the South Coast , mainly affecting the river Samalá .
This is why the INSIVUMEH recommends:
At the CONRED: Take precautions to places where vehicles cross the Rio Samalá.
At general management of road infrastructure, to monitor particularly the bridge Castillo Armas, to avoid damage.
October 24, 2015. Santiaguito, Guatemala :
Source : INSIVUMEH
Photo : Summitpost