Mount St. Helens, Washington, USA

Data from deformation-monitoring instruments indicated that during13-19 February lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes. Clouds and snow cover frequently inhibited visual observations.
Source: Cascades Volcano Observatory – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano [...]

Soufriére Hills, Montserrat, West Indies

MVO reported that that during 13-19 February the lava dome at Soufrière Hills changed very little, based on visual observations. Seismic activity was very low and low-level rockfall activity continued. Fumarolic activity on the N and E flanks continued. Active fumaroles were also noted in the Galway’s area to the S of the dome. Clouds [...]

Shiveluch, Russia

KVERT reported that seismic activity at Shiveluch was slightly above background levels during 8-11 February and at background levels on 12 and 13 February. Based on seismic interpretation, ash plumes possibly rose to an altitude of 3.3 km (10,800 ft) a.s.l. on 9 February. Strong fumarolic activity was noted during 8-9 and 11-12 February. According [...]

Santa María, Guatemala

INSIVUMEH reported on 6 February that avalanches from lava flows on the W flank of Santa María’s Santiaguito lava dome complex continued. Explosions produced ash-and-steam plumes that rose to an altitude of 3.9 km (12,800 ft) a.s.l. On 8 February, a strong phreatic explosion produced an ash plume that rose to an altitude of 4.7 [...]

Rabaul, Papua New Guinea

RVO reported that ash plumes from Rabaul caldera’s Tavurvur cone rose to an altitude of 2.2 km (7,200 ft) a.s.l. and drifted NW, N, E, SE, and S during 12-15 and 17-20 February. Ashfall was reported in Barovon, Lalakua, Raluana, Kokopo, and surrounding villages downwind. During 19-20 February, incandescence at the summit was accompanied by [...]

Popocatépetl, Mexico

CENAPRED reported that emissions of steam and gas from Popocatépetl were visible during 12-19 February. The plumes occasionally contained slight amounts of ash. An explosion on 12 February resulted in an ash plume that rose to an altitude of 7 km (23,000 ft) a.s.l. and ejected fragments that fell in the crater. On 14 February, [...]

Pacaya, Guatemala

INSIVUMEH reported that during 6-19 February white and blue fumarolic plumes from Pacaya’s MacKenney cone rose to altitudes of 2.6-2.7 km (8,500-8,900 ft) a.s.l. and drifted S, SW, and W. About two to five lava flows per day traveled about 50-200 m to the W and NW, slowly filling in the area between MacKenney cone [...]

Ol Doinyo Lengai, Tanzania

The Toulouse VAAC reported that an ash plume from Ol Doinyo Lengai was observed by pilots on 15 February and rose to an altitude of 11.6 km (38,000 ft) a.s.l.
Source: Toulouse Volcanic Ash Advisory Center (VAAC) – “Report provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

Nevado Del Huila, Colombia

INGEOMINAS reported that sulfur dioxide plumes from Nevado del Huila drifted NW on 8 and 12 February.
Source: Instituto Colombiano de Geología y Minería (INGEOMINAS) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

Kilauea, Hawaii, USA

Based on observations during overflights, and web camera views when weather permitted, HVO reported that during 13-19 February activity from Kilauea’s fissure segment D was concentrated at the Thanksgiving Eve Breakout (TEB) shield and new satellitic shields to the E and SE. On 15 February, a broad pahoehoe flow traveled E from the main complex [...]