"Dozens of small earthquakes near a volcano in southwest Colombia were raising concerns Sunday of a possible eruption. More than 30 temblors have occurred within 10 kilometers (6.2 miles) of the Galeras volcano beginning Saturday Aug. 20, geologist Roberto Torres said. Several had a magnitude near 5 and seven were strong enough to be felt by people."
Galeras volcano is an active "4270-m high andesitic stratovolcano in the southwestern Colombia near the border to Ecuador" whose activity in May 2005 prompted the Colombia government to evacuate the area.
During 15-21 August, volcanic activity at Bagana remained at low levels.
- Variable amounts of thick "white vapor"
Activity at Kilauea is at low levels at present and only little lava can be seen: during the past week, the lava entry at the East Lae`Apuki point continued to be active, and a few surface lava flows were sometimes visible on the Pulama Pali fault scarp and the coastal flat. By 22 August, surface lava on the W branch of the PKK lava flow was no longer visible.
Eruptive activity continues at Anatahan volcano in the Mariana Islands. Ash plumes, mainly observed by satellite and pilots, rise to heights of ~7.9 km (26,000 ft) a.s.l. Seismic activity continues at moderate levels.
Growth of the new lava dome inside the crater of Mount St. Helens continues, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash. During such eruptions, changes in the level of activity can occur over days to months. The eruption could intensify suddenly or with little warning and produce explosions that cause hazardous conditions within several miles of the crater and farther downwind. Small lahars could suddenly descend the Toutle River if triggered by heavy rain or by interaction of hot rocks with snow and ice. These lahars pose a negligible hazard below the Sediment Retention Structure (SRS) but could pose a hazard along the river channel upstream. ...more
Semeru is in a state of high activity as observed by the VolcanoDiscovery team during the past days. Strong strombolian activity is taking place at frequent intervals of 5-10 minutes, producing billowing ash clouds of 1-2 km height and showering much of the summit cone with fresh gray ash.
Fuego remains in constant activity. Jet-engine like sounds accompany minor gas and small ash emissions from the crater, while a blocky lava flow extends for about 500 m from the crater down the flank of the summit cone.
Colima remains active, although the intensity has decreased during the past weeks. Typically, 3-5 minor to medium ash explosions are occurring per day at the volcano and an intensification of the eruption could occur at any time.