![]() Previous reports have covered activity involving ash plumes with extensive ashfall, lava flows, lahars, and pyroclastic flows (BGVN 41:01 and 42:08). The most recent eruptive episode began in January 2013 and continued through March 2017. ![]() Renewed volcanism after two years of quiet explosion on įrequent historical eruptions at Volcán de Colima date back to the 16th century and include explosive activity, lava flows, and large debris avalanches. Most Recent Bulletin Report: August 2019 (BGVN 44:08) Cite this Report Source: Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima Weather conditions sometimes prevented observations of the crater. A thermal camera located S of the volcano recorded thermal anomalies associated with fumarolic emissions. ![]() The temperatures in the fumarolic area decreased from 202 degrees Celsius in May to 169 degrees. Temperatures inside the crater were 116 degrees Celsius, lower than the temperature of 250 degrees Celsius recorded in May. An area of collapsed material on the outer W wall was also identified. An overflight on 9 July revealed that the diameter of the vent had slightly increased, likely caused by subsidence, and other areas of minor subsidence within the crater were noted. Five lahars descended the Montegrande ravine. Most Recent Weekly Report: 10 July-16 July 2019 Cite this ReportĬentro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima reported that intermittent steam-and-gas emissions, mainly from the NE side of the crater, and two small explosions were recorded during 5-12 July.
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