Courtesy of IG-EPN (INFORME DIARIO DEL VOLCAN REVENTADOR No. Webcam (Rebeca) infrared image of Reventador’s NE flank showing the active incandescent block avalanches (bright yellow-orange) on 13 March 2021. Two lava flows were reported moving down the N and NE flanks.įigure 143. At night, crater incandescence and incandescent block avalanches were visible on all flanks, though primarily on the NE and S flanks traveling 500-800 m below the crater (figure 143), though it was not uncommon for weather to prevent clear views of the summit. There were 25-121 daily explosive events during these two months, generating gas-and-steam and ash plumes to 400-1,500 m above the crater that drifted in multiple directions (figure 142). MonthĪctivity at the summit was consistent during February and March 2021. Data courtesy of IG-EPN (February to July 2021 daily reports). Monthly summary of explosions and plume heights recorded at Reventador from February through July 2021. Seismicity, which was noted throughout the reporting period, was characterized by harmonic tremor events, signals indicating emissions, few volcano-tectonic earthquakes, and dominantly long-period (LP) earthquakes. At night and early morning, frequent crater incandescence was visible, occasionally accompanied by lava flows generally on the eastern flanks and incandescent block avalanches traveling as far as 900 m from the summit. Ash plumes rose to a maximum height of 2.3 km above the crater on 11 June. During May-June the average number of daily explosions had declined to 34 and 33, respectively. The highest average number of explosions per day was 73 in March, followed by 65 in February (table 13). This report updates information from February through July 2021 and is characterized by daily explosions, ash plumes, incandescent block avalanches, lava flows, and occasional pyroclastic flows and lahars, based on daily reports from Ecuador's Instituto Geofisico (IG-EPN), the Washington Volcano Ash Advisory Center (VAAC), and infrared satellite data.ĭuring February to July 2021, IG-EPN reported daily explosions, gas-and-steam and ash plumes, and frequent crater incandescence, often accompanied by incandescent block avalanches and lava flows.
The most recent eruption began in 2008 and has recently consisted of ash emissions, incandescent block avalanches, a new lava dome, and lava flows (BGVN 46:02). Volcán El Reventador is located 100 km E of the main axis of active volcanoes in Ecuador and has had historical eruptions dating back to the 16th century, characterized by explosive events and lava flows. Ash explosions, lava flows, and block avalanches continue during February-July 2021
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