There are still continuously emitted ash plumes that rose to altitudes of 5-7 km.

Ubinas continues to produce near-continuous strong ash explosions that produce plumes rising to altitudes of 5-7 km (16,000-23,000 ft) a.s.l., which over the past week mostly drifted SE and NW.

Based on SIGMET reports and pilot observations, the Buenos Aires VAAC reported that during 5-6 September ash plumes from Ubinas rose to altitudes of 5.5-6.4 km (18,000-21,000 ft) a.s.l. and drifted NE and SE. Geologic Summary. A small, 1.2-km-wide caldera that cuts the top of Ubinas, Peru's most active volcano, gives it a truncated appearance. Ubinas is the northernmost of three young volcanoes located along a regional structural lineament about 50 km behind the main volcanic front of Peru. The upper slopes of the stratovolcano, composed primarily of Pleistocene andesitic lava flows, steepen to nearly 45 degrees. The steep-walled, 150-m-deep summit caldera contains an ash cone with a 500-m-wide funnel-shaped vent that is 200 m deep. Debris-avalanche deposits from the collapse of the SE flank of Ubinas extend 10 km from the volcano. Widespread Plinian pumice-fall deposits from Ubinas include some of Holocene age. Holocene lava flows are visible on the volcano's flanks, but historical ac...

On 18 August ash plumes from Ubinas rose to altitudes of 5.5-6.4 km (18,000-21,000 ft) a.s.l. and drifted W.

Based on SIGMET reports and pilot observations, the Buenos Aires VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-7 km (18,000-23,000 ft) a.s.l. on 9 and 12 May. Plumes drifted E and SE, respectively.

Ubinas volcano continues to produce sporadic explosions with ash plumes rising to altitudes of about 5-7 km (16,000-23,000 ft) a.s.l.
 
 

Based on a Significant Meteorological Information (SIGMET) advisory,
pilot reports, and observations of satellite imagery, the Buenos Aires
VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-8.5
km (18,000-28,000 ft) a.s.l. and drifted NW and NE during 23-27
October.

ash plumes from Ubinas rose to altitudes of 5.5-7.3
km (18,000-24,000 ft) a.s.l. and drifted NW and NE during 19-20 and
22-23 October.

Pilots reported ash plumes that rose to an altitude of of 5.5-6.4 km on 12 and 20 September.

Based on a Significant Meteorological Information (SIGMET) advisory, the Buenos Aires VAAC reported that an ash plume from Ubinas rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted SE on 22 July. ash was not identified on satellite imagery.
 

Based on observations from satellite imagery and Significant Meteorological Information (SIGMET) advisories, the Buenos Aires VAAC reported that during 13-17 June continuous emissions from Ubinas produced ash plumes to altitudes of 5.8-6.7 km (19,000-22,000 ft) a.s.l. Plumes drifted NNE, E, SE, SW, and W.
 

Based on observations from satellite imagery and Significant Meteorological Information (SIGMET) advisories, the Buenos Aires VAAC reported that during 30 May-3 June and on 6 June ash plumes from Ubinas rose to altitudes of 3.7-7.6 km (12,000-25,000 ft) a.s.l. Plumes drifted NE, ESE, and SSE.
 

INGEMMET reported that during 16-17 May, ash and gas plumes from Ubinas rose to altitudes of 5.8-7.7 km (19,000-25,300 ft) a.s.l. and drifted SW, SE, and E.Based on pilot reports and satellite imagery, the Buenos Aires VAAC reported that continuous emissions produced ash plumes that rose to altitudes of 5.6-9.1km (18,000-30,000 ft) a.s.l. during 17 and 19-22 May. Plumes drifted ESE, SE,and E.
 

Based on pilot reports and satellite imagery, the Buenos Aires VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-9.1 km (18,000-30,000 ft) a.s.l. during 2-5 May. Plumes drifted NE, S, SE, and SW.
 

INGEMMET reported that on 18 April, explosions from Ubinas produced gas and ash plumes to altitudes of 5.9-7.7 km (19,400-25,300 ft) a.s.l. Plumes drifted SW. Based on significant meteorological (SIGMET) notices, satellite imagery, and pilot reports, the Buenos Aires VAAC reported that ash plumes rose to altitudes of 5.5-7 km (18,000-28,000 ft) a.s.l. on 17, 18, 22, and 24 April. Plumes drifted NW, SW, and SE.
 

Based on pilot reports, the Buenos Aires VAAC reported that an ash cloud from Ubinas rose to 5.5-6.1 km (18,000-20,000 ft) a.s.l. on 30 March and drifted E. According to a news article, local residents observed rockfalls and reported ashfall. A scientist from the Geological, Mining, and Metallurgic Institute (INGEMMET) reported that the eruption was the largest in a two-week period characterized by an increased rate of explosions. A diffuse ash plume was visible on satellite imagery on 3 April drifting NE.

Based on pilot reports, the Buenos Aires VAAC reported continuous emissions from Ubinas on 11 March. ash plumes rose to 5.5-6.1 km (18,000-20,000 ft) a.s.l. and drifted N.

Based on pilot reports, the Buenos Aires VAAC reported continuous emissions from Ubinas during 18-20 February. ash plumes rose to 5.5-7 km (18,000-23,000 ft) a.s.l. and drifted E and SW.
 

Based on pilot reports, the Buenos Aires VAAC reported continuous
emissions from Ubinas on 28 January. ash plumes rose to 5.5 km (18,000
ft) a.s.l. and drifted SE.

Based on pilot reports, the Buenos Aires VAAC reported continuous emissions from Ubinas on 27 and 30 December. ash plumes rose to 4.9-8.5 km (16,000-28,000 ft) a.s.l. and drifted E.