Volcanoes Today, 31 Jan 2013 - recent updates on world-wide volcanic activity

Source: Volcano Discovery - 1/31/13

Lokon-Empung (North Sulawesi, Indonesia): Explosions from the volcano have become more infrequent, but two new explosions occurred this morning at 6:54 and 10:44 am local time. The eruptions produced booms heard in the nearby villages, but due to cloud cover could not be well observed. The local volcano observatory estimated the height of the plume about 800 meters.
The eruption was preceded by strong seismic activity that started last night. PVMBG maintains alert level 3 (out of 4).

Tongariro (North Island, New Zealand): Weak earthquakes continue to occur under the volcano, but the general level of seismic activity has remained low.

White Island (New Zealand): During the recent gas-measuring flight, GNS scientists measured slightly increased levels of volcanic gas output. Seismic activity has reverted to a continuous tremor and remains at a high level, but GNS does not think a larger eruption is imminent.

Colima (Western Mexico): The volcano has been quiet so far after Tuesday's powerful vulcanian explosion that produced an ash column 3 km high and ejected many incandescent bombs onto the upper flanks of the volcano.
The current seismic signal shows some small volcanic quakes, signals of rockfalls and possibly minor explosions.

Popocatépetl (Central Mexico): The rate of emission has been about 1 per hour during 29-30 Jan.

Nevado del Huila (Colombia): Activity during the past week has not changed, characterized by degassing accompanied by normal levels of seismic activity (124 events of low energy).

Machin (Colombia): There is no surface activity, but continuing seismic unrest including some volcanic-tectonic quakes in two areas southeast of the summit come, at 2-4 km and 12-15 km depth.

Galeras (Colombia): Sporadic small steam and sometimes ash emissions continue to be observed from time to time, such as on 22 and 27 Jan. Low-energy tremor pulses accompany the emissions. Seismicity has been of low energy during the past week.

Nevado del Ruiz (Colombia): Strong degassing has produced an SO2 signal visible on yesterday's NOOA satellite data. Numerous small volcanic earthquakes and short periods of volcanic tremor continue to occur at the volcano.

Cumbal (Colombia): Seismic activity has remained low during the past week.

Sotará (Colombia): The only sign of acivtity over the past week were 4 small volcano-tectonic quakes.

Reventador (Ecuador): Seismic activity remains high, but seems to be slowly decreasing. A steam plume and weak glow from the summit could be observed yesterday.

Tungurahua (Ecuador): Numerous small volcanic earthquakes and continuous weak tremor are being recorded and there seems to be a slow increase over time as a sign that the volcano could erupt again soon. IGPEN characterizes the level of activity as "moderate".

Volcano Activity Summary for 31 Jan 2013:

Restless / uncertain activity:

Aoba (Vanuatu): steaming, degassing (updated 26 Dec 2012)
Arenal (Costa Rica): continua la fase de reposo, emisión de gases (updated 30 Dec 2012)
Askja (Central Iceland): increased seismicity (updated 14 Dec 2012)
Bárdarbunga (Iceland): earthquake swarm (updated 26 Jan 2013)
Bromo (East Java, Indonesia): seismic unrest, steaming (updated 3 Oct 2012)
Campi Flegrei (Phlegrean Fields) (Italy): sciame sismico (updated 7 Jan 2013)
Chaitén (Southern Chile and Argentina)
Changbaishan (China / North Korea border): increased seismic and degassing activity, deformation (updated 29 Sep 2012)
Cleveland (Aleutian Islands, Alaska): elevated temperature at summit crater (updated 27 Jan 2013)
Concepción (Nicaragua): seismic unrest (updated 23 Jan 2013)
Cumbal (Colombia): continuing seismic swarms (updated 31 Jan 2013)
El Hierro (Canary Islands, Spain): elevated number of earthquakes (updated 26 Jan 2013)
Gamkonora (Halmahera): alert level lowered to yellow (updated 14 Sep 2012)
Gaua (Vanuatu)
Hekla (Iceland): Small but very shallow 1.2 magnitude earthquake at 21:13 UTC on 15 Feb 2012 (updated 14 Sep 2012)
Ijen (East Java, Indonesia): increased steaming and seismicity, alert level raised on 24 July (updated 17 Apr 2012)
Irazu (Costa Rica)
Iwo-jima (Volcano Islands): weak degassing, occasional volcanic tremors (updated 22 Jan 2013)
Katla (Southern Iceland): occasional seismic swarms (updated 17 Aug 2012)
Kerinci (Sumatra)
Ketoi (Kurile Islands, Russia)
Kuchinoerabu-jima (Ryukyu Islands)
Kverkfjöll (Eastern Iceland): occasional small earthquake swarms (updated 21 Oct 2012)
Lewotobi (Flores): steaming and seismic activity decreased, alert lowered back to 1 (out of 4) (updated 5 Apr 2012)
Loihi (United States, Hawaiian Islands): Magnitude 4.2 earthquake at Loihi (updated 26 Nov 2012)
Machin (Colombia): elevated seismic activity (updated 31 Jan 2013)
Masaya (Nicaragua): elevated seismic activity (updated 30 Jan 2013)
Mauna Loa (Big Island, Hawai'i)
Mayon (Luzon Island): steaming, increased earthquakes, slight inflation (updated 11 Nov 2012)
Merapi (Central Java): Dome collapse sometime in October (updated 21 Oct 2012)
Mt Fuji (Honshu): earthquakes at the end of January and in February 2012, new craters reported, increasing fumarolic activity (updated 9 Sep 2012)
Nevado del Huila (Colombia): degassing (updated 31 Jan 2013)
Pacaya (Guatemala): seismic unrest (updated 29 Jan 2013)
Papandayan (West Java): alert status back to 2 (updated 1 Feb 2012)
Reclus (Southern Chile and Argentina): increased number of earthquakes (updated 31 Aug 2012)
Rinjani (Lombok)
Ruapehu (North Island): seismic unrest (updated 24 Jan 2013)
San Cristobal (Nicaragua): seismic unrest (updated 30 Jan 2013)
San Miguel (El Salvador): seismic unrest (updated 25 Jan 2013)
Sangeang Api (Indonesia): occasional weak steaming (updated 3 Jan 2013)
Sinabung (Sumatra)
Siple (Marie Byrd Land, Western Antarctica): possible steaming detected on 20 June (updated 28 Jun 2012)
Sirung (Pantar Island, Indonesia ): steaming and elevated seismicity (updated 27 May 2012)
Slamet (Central Java): degassing, strong fumaroles (updated 9 Aug 2012)
Sotará (Colombia): Actividad volcán Sotará del 3 al 9 de octubre de 2012 (updated 31 Jan 2013)
Taal (Luzon, Philippines): degassing, elevated seismic activity (updated 30 Jan 2013)
Talang (Sumatra)
Telica (Nicaragua): seismic unrest (updated 15 Nov 2012)
Tiatia (Kunashir Island): weak thermal anomaly (updated 6 Sep 2012)
Tjörnes Fracture Zone (North of Iceland): continuing earthquake swarm (updated 30 Jan 2013)
Tongariro (North Island, New Zealand): strong steaming from Te Maari craters, slightly elevated seismic activity (updated 31 Jan 2013)