An eruption that began at Chikurachki on 25 January deposited ash in the town of Severo-Kurilsk between 1200 and 1500. On 2 February at 1200 an eruption was observed by a helicopter pilot. An ash column from the eruption rose 300 m above the crater and drifted more than 70 km SE. There are no seismic stations at the volcano, therefore, no Color Concern Code was assigned by KVERT.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

During early February, high-frequency earthquakes were recorded at Canlaon at depths of 1-5.5 km. In the previous week, several low-frequency earthquakes were recorded. According to a news report, PHIVOLCS stated that the occurrence of low-frequency earthquakes supports the idea that some fluid migration, possibly magma ascent, is occurring. The Alert Level remained at 1 ("Low-level unrest"), and a 4-km-radius Permanent Danger Zone was in effect.

Source: Sun Star News

The Universidad de Colima reported on 30 January that the growing lava dome at Colima could result in either a dome collapse in days or weeks that would send pyroclastic flows down the volcano's S flank, or explosions could destroy the lava dome and hurl volcanic fragments several kilometers. On 4 February at 1721 a landslide occurred off of the dome, sending material to less than 600 m from the volcano's summit to the S towards Cordobán ravine. Several incandescent landslides were seen traveling less than 1 km down the S and SSW flanks of the volcano. During a flight over the volcano, members of the Advisory Scientific Committee noticed that dome growth occurred towards the W. Seismicity was relatively low; numerous earthquakes with very low magnitudes occurred. The 6.5-km-radius exclusion zone remained in effect, in addition there were restrictions to access within a radius of 11.5-km from the volcano's summit. Residents were advised to be ready in case an increase in activity leads to the evacuation of towns around the volcano.

Sources: Centro Universitario de Estudios Vulcanológicos (CUEV) - Universidad de Colima, BBC News, Associated Press

On 30 January low levels of activity were observed at Etna. Loud explosions occurred approximately every 5-30 minutes in the NW pit of Bocca Nuova crater, but no solid material was ejected. Degassing occurred at Bocca Nuova, Voragine, Northeast, and Southeast craters.

Source: Italy's Volcanoes

Based on information from INSIVUMEH, the Washington VAAC reported that on 1 February at 0930 ash, steam, and lava were emitted from Fuego. An ash-and-steam cloud rose to ~4.5 km a.s.l. and drifted to the SW. No ash was seen on satellite imagery, but a hotspot was visible on infrared imagery.

Source: Washington Volcanic Ash Advisory Center (VAAC)

Seismicity was above background levels on 25 January, but the next day there were no seismic data available due to a station malfunction. On the 27th a thermal anomaly was visible on satellite imagery. The Tokyo VAAC reported that an eruption on 1 February at 1810 produced an E-drifting ash cloud to ~9 km a.s.l. The cloud was not visible on satellite imagery.

Sources: Tokyo Volcanic Ash Advisory Center (VAAC), Kamchatkan Volcanic Eruption Response Team (KVERT)

During visits to Kavachi in January, occasional explosive eruptions were seen that produced columns of steam, ash, rock, and water up to 1 km a.s.l. Sulfur slicks, small fragments of volcanic rock, and bubbles from the release of gas were visible at the sea surface. In addition, loud sounds were heard approximately every 2-15 minutes. The volcano's summit was estimated to be 60 m below sea level.

Source: The Wilderness Lodge

During 21-27 January, seismicity at Kerinci seemed to decrease in comparison to the previous week. Seismicity was dominated by 391 small explosions. Minor explosions on 26 January produced plumes 100-600 m above the summit. The volcano remained at Alert Level 2.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

On 3 and 4 February lava flows were visible atop Pūlama pali, along the Kamoamoa flow. Generally, volcanic tremor remained at moderate levels at Puʻu ʻŌʻō and long-period earthquakes below Kīlauea's caldera continued, though at greatly reduced amplitudes compared to the previous week. Tiltmeters across the volcano showed no evidence of significant deformation.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)

During 21-27 January, 979 lava avalanches traveled down Merapi's flanks, predominately SW toward the upstream portions of the Sat and Bebeng rivers, and partly WSW to the Lamat and Senowo rivers. The maximum run-out distance was ~2.75 km. Several small pyroclastic flows traveled up to ~1.5 km to the upstream portions of the Sat and Bebeng rivers; two on the 23rd, one on the 24th, and two on the 25th. The volcano remained at Alert Level 2 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

According to the UN Office for the Coordination of Humanitarian Affairs (OCHA), several earthquakes were felt by the population near Nyiragongo on 28 and 29 January. The earthquakes ranged in intensity from small to large. No volcanic tremor, indicating magma movement, was recorded. On 29 January heavy rain caused large amounts of steam to rise from cooling lava. The increase in steaming led to several false reports of renewed volcanism. The pH of Lake Kivu was measured to be the same as prior to the 17 January eruption. The volcano remained at Alert Level Yellow (second lowest on a four-color scale).

Sources: UN Office for the Coordination of Humanitarian Affairs (OCHA), ReliefWeb, US Agency for International Development / Bureau for Humanitarian Assistance

Air photos taken on 24 January revealed that the new lava dome growing in Popocatépetl's summit crater was 180 m in diameter and 150 m high. During 30 January-5 February Popocatépetl emitted small clouds of steam, gas, and generally minor amounts of ash. In addition, episodes of harmonic tremor were recorded.

Source: Centro Nacional de Prevencion de Desastres (CENAPRED)

Seismicity was above background levels at Shiveluch during 26-31 January, but on 1 February at 1859 it increased. During the following 2 hours spasmodic tremor occurred and seismic data suggested that an ash-and-gas plume rose to 2.5 km above the lava dome. Afterwards, seismicity returned to levels seen before the increase. During 25 January-2 February several clouds composed of ash, steam, and/or gas were seen, with the highest rising 2 km above the dome. Thermal anomalies were visible on satellite imagery. The Color Concern Code remained at Yellow ("volcano is restless").

Sources: Tokyo Volcanic Ash Advisory Center (VAAC), Kamchatkan Volcanic Eruption Response Team (KVERT)

During 25 January-1 February, the level of activity at Soufrière Hills was similar to the previous week. Lava-dome growth continued on the E side of the dome, producing numerous rockfalls and small pyroclastic flows to the upper portion of the Tar River Valley. These events were of similar size and energy to those of the previous week. Minor episodes of ash venting occurred throughout the report period. Ash clouds rose to a maximum height of ~2.5 km a.s.l.

Sources: Washington Volcanic Ash Advisory Center (VAAC), Montserrat Volcano Observatory (MVO)

During 30 January-5 February, several emissions of steam with small amounts of ash occurred at Tungurahua. The highest rising ash cloud was produced by an eruption on 3 February at 1326 and reportedly reached a height of ~3 km above the volcano. Ash sporadically fell in Pillate and Ambato. Ash from emissions on 4 February fell in Baños, Pillate, and Ambato.

Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN), Washington Volcanic Ash Advisory Center (VAAC)