Volcanos

Roundup of Global Volcanic Activity:

El Hierro (Canary Islands, Spain): Seismic activity of the island has been calm over the past weeks. The number of daily small earthquakes continues to be weakly elevated, with hypocentres clustered under the central and western parts of the island.

Mauna Loa (Big Island, Hawai'i): The latest update of the USGS mentions that minor inflation of a shallow magma reservoir beneath Mauna Loa may be occurring. Seismicity rates were slightly elevated. However, the level of observed seismicity is far from alarming and the alert level remains at green. No eruption is expected in the near future.

Kilauea (Hawai'i): No significant changes in activity have occurred over the past weeks. The summit is currently in a phase of slow inflation while the lava lake level in Halema'uma'u remained fairly steady. The 2 lava flow fields fed from Pu'u 'O'o continue to be active: on the middle east rift zone, the Kahauale`a II lava flow was recently conquering new land and burning forest north of Pu`u `O`o. Southeast of Pu`u `O`o, the Peace Day flow had active breakouts at the base of the pali and on the coastal plain. Most of the flow, however, stayed within its lava tube until reaching the ocean on both the east and west sides of the Hawai`i Volcanoes National Park boundary. Gas emissions from the volcano remained elevated.

Veniaminof (Alaska Peninsula, USA): Seismic tremor continued to slowly but steadily increase yesterday, then dropped temporarily and has been increasing again today. AVO reports an intermittent, low-level steam plume issuing from the central cone within the caldera. No elevated surface temperature were visible in satellite images. No other activity was confirmed by AVO.

Pavlov (Alaska Peninsula, USA): Ash emissions continue, and possibly, a small lava flow is effusing from the summit. Seismic tremor and explosion signals are recorded by AVO and intermittent elevated surface temperatures consistent with lava effusion were observed over the past day in satellite images. (AVO)

Popocatépetl (Central Mexico): A cluster of several (7) volcanic earthquakes up to magnitudes 2.4 has occurred this morning, perhaps heralding some more vigorous activity in he near future. Apart from this, activity has remained stable with about 2 weak steam-gas-sometimes ash-containing explosions per hour. A steam plume often rises about 1 km above the volcano.

Fuego (Guatemala): INSIVUMEH reports no significant changes in activity. 9 strombolian-type explosions with incandescent bombs ejected to 100 m and ash plumes rising about 500 m were observed during the past 24 hours.

Telica (Nicaragua): Seismicity has been at low levels recently. Today's seismogram is shown for comparison (see updates from earlier this year).

San Cristobal (Nicaragua): Seismic activity has returned to normal (low) levels.

Cerro Negro (Nicaragua): Seismic activity has returned to low levels.

Nyiragongo (DRCongo): A very large SO2 plume is visible hovering over the East Virunga region around Nyiragongo on NOAA's satellite data today. This leaves no doubt that the volcano's lava lake is still very active.