Volcanos

Global Volcanic Activity - Ongoing Activity for the week of 12 June - 18 June 2019

Agung | Bali (Indonesia) : PVMBG reported that an eruption at Agung, recorded by the seismic network at 0138 on 13 June, ejected incandescent material onto the flanks. The Darwin VAAC stated that ash plumes rose to altitudes of 5.5 and 9.1 km (18,000 and 30,000 ft) a.s.l. and drifted W and SW, respectively, based on webcam views and satellite data. By 0635 the ash plume had detached and by 1505 it was about 370 km S of Agung. The Alert Level remained at 3 (on a scale of 1-4) with the exclusion zone set at a 4 km radius.

Aira | Kyushu (Japan) : JMA reported that inflation at Minamidake crater (at Aira Caldera’s Sakurajima volcano) began at 0500 on 11 June. At 1431 an explosion ejected material 1.2 km from the crater and generated an ash plume that rose 2.2 km above the crater rim. An explosion at 0921 on 13 June was followed by some deflation. Very small eruptive events were recorded during 14-17 June. The Alert Level remained at 3 (on a 5-level scale).

Azumayama | Honshu (Japan) : On 17 June JMA lowered the Alert Level for Azumayama to 1 (the lowest level on a 5-level scale), noting that deformation and elevated seismicity recorded in May had stabilized and decreased, respectively.

Dukono | Halmahera (Indonesia) : Based on satellite and wind model data, and notices from PVMBG, the Darwin VAAC reported that during 12-16 and 18 June ash plumes from Dukono rose to altitudes of 2.1-2.4 km (7,000-8,000 ft) a.s.l. and drifted in multiple directions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2 km exclusion zone.

Ebeko | Paramushir Island (Russia) : KVERT reported that a thermal anomaly over Ebeko was identified in satellite images on 12 June. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Fuego | Guatemala : INSIVUMEH reported that there were 10-20 explosions per hour recorded at Fuego during 15-18 June, generating ash plumes that rose as high as 1.1 km above the crater rim and drifted 10-25 km W, SW, and E. Explosions sometimes produced shock waves that rattled houses in nearby communities. Incandescent material was ejected 200-400 m high and caused avalanches of material that occasionally traveled long distances (reaching vegetated areas) down Seca (W), Taniluyá (SW), Ceniza (SSW), Trinidad (S), El Jute (SE), Las Lajas (SE), and Honda ravines. Ashfall was reported in several areas downwind including Santa Sofía (12 km SW), Morelia (9 km SW), Panimaché I and II (8 km SW), Sangre de Cristo (8 km WSW), and El Porvenir (8 km ENE).

Karymsky | Eastern Kamchatka (Russia) : KVERT reported that a weak thermal anomaly at Karymsky was identified in satellite images during 8-14 June. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Klyuchevskoy | Central Kamchatka (Russia) : KVERT reported that a weak thermal anomaly at Klyuchevskoy was visible in satellite images during 11-13 June. Explosions during 11-12 June were recorded in video and satellite data generating ash plumes that rose to 5.5-6 km (18,000-19,700 ft) a.s.l. and drifted 200 km WNW. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Krakatau | Indonesia : PVMBG reported that Anak Krakatau’s seismic network recorded one eruptive event at 0719 on 12 June. The event was not followed by visible ash emissions, though observations were hindered by weather conditions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2 km radius hazard zone from the crater.

Kuchinoerabujima | Ryukyu Islands (Japan) : JMA reported that Kuchinoerabujima’s Shindake Crater has not erupted since 3 February, and the number of shallow earthquakes located near the crater had been decreasing since then. Deeper volcanic earthquakes had not been recorded since 16 May. Sulfur dioxide emissions remained elevated. JMA lowered the Alert Level to 2 (the second lowest level on a scale of 1-5) on 12 June.

Manam | Papua New Guinea : The Darwin VAAC reported that on 18 June ash plumes from Manam rose to altitudes of 3-3.7 km (14,000 ft) a.s.l. and drifted E and NE, based on satellite data and weather models. A thermal anomaly was also visible.

Pacaya | Guatemala : INSIVUMEH reported that during 15-18 June Strombolian explosions at Pacaya’s Mackenney Crater ejected material as high as 30 m above the crater rim. A lava flow divided into two branches and traveled 300 m down the NW and W flanks, advancing towards Cerro Chino. Minor avalanches of material from lava flow fronts descended the flanks.

Poas | Costa Rica : OVSICORI-UNA reported that on 12 June small geyser-like eruptions at Poás ejected material less than 50 m high at a rate of about once per hour. At 0604 on 18 June an eruption that lasted about six minutes produced a plume of unknown height due to weather conditions. Residents reportedly heard several loud noises during 0610-0615 and observed an eruption plume rising from the crater. Ash fell in Cajón (12 km SW), San Luis de Grecia (11 km SW), Los Ángeles, San Miguel, San Isidro (28 km SE), and San Roque (23 km SSE). Whitish ash deposits surrounding the crater, especially on the W and S sectors, were visible in webcam images.

Santa Maria | Guatemala : INSIVUMEH and CONRED reported that on 12 June lahars descended Santa María's Cabello de Ángel (a tributary of Nima I) and San Isidro (tributary of El Tambor) drainages. The lahar in San Isidro was 15-17 m wide and 1.5 m deep, and carried shrubs, tree trunks, and blocks up to 2 m in diameter. On 16 June lahars again descended the San Isidro drainage. During 15-18 June explosions at Caliente cone generated ash plumes that rose 400-800 m and drifted SW and E. Avalanches of material descended the E and SE flanks of the cone, and during 17-18 June reached the base of the cone. Minor ashfall was reported in San Marcos (10 km SW), Loma Linda (6 km WSW), and Palajunoj (18 km SSW) during 17-18 June.

Sheveluch | Central Kamchatka (Russia) : KVERT reported that a thermal anomaly at Sheveluch’s lava dome was identified in daily satellite images during 8-14 June. Explosions and hot avalanches of material were captured by video and satellite data during 11-12 June. Ash plumes from the events drifted 60 km WNW. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Villarrica | Chile : OVDAS-SERNAGEOMIN and ONEMI reported that during 1-31 May gas plumes rose as high as 170 m above Villarrica’s crater rim. Incandescence from the crater was periodically visible. POVI reported that on 17 June lava spattering above the crater rim was recorded by a newly-installed infrared webcam.