March 22 , 2020.

Alaska , Shishaldin :

54°45’19 » N 163°58’16 » W,
Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Worldview-2 false color image of Shishaldin’s summit on March 19, 2020. Steaming obscures any view inside the crater, with no lava visible through the steam or outside of the crater.

Eruptive activity continues at Shishaldin. Seismicity remains elevated with continuous tremor. Elevated surface temperatures were observed in mostly cloudy satellite views. At this time, eruptive activity appears confined to the summit area, but activity could increase with little or no warning resulting in lava flows outside of the crater, lahars, and ash emissions.

Shishaldin is monitored by local seismic and infrasound sensors, satellite data, web cameras, a telemetered geodetic network, and distant infrasound and lightning networks.

Source : AVO.

Photo : Loewen, Matt.

Indonesia , Soputan :

G.Soputan (1,809 m above sea level) decreased its volcanic activity so that the activity level was reduced from level III (SIAGA) to level II (Waspada) from October 8, 2019 at 4:00 p.m. The last eruption occurred on December 16, 2018, causing an eruption column height of 7000 m. It was observed that the color of the column went from gray to black.

The volcano is covered with fog. No smoke from the crater is observed. The weather is cloudy, light to moderate winds from the south-east and south.

According to seismographs, on March 21, 2020 it was recorded:
11 avalanche earthquakes
1 emission earthquake
1 deep tectonic earthquake

Recommendation:
The community must not be active within a radius of 1.5 km around the summit of G. Soputan and in the area of the South-South-West sector up to 2.5 km which is an opening area of the crater, to avoid the threat of lava avalanches and hot clouds.
Be aware of the threat of lahars, especially in the rivers that descend around the slopes of G. Soputan, such as S. Ranowangko, S. Lawian, S. Popang and Londola Kelewahu.
In the event of ash rain, people are encouraged to use masks to anticipate breathing problems.

VONA: The last VONA code has received a RED color code, published on December 16, 2018 at 05:40:00. Volcanic ash was observed at an altitude of 8809 m above sea level or about 7000 m above the summit.

Source : PVMBG.

Photos : avec la permission de Martin Rietze .

Colombia, Nevado del Huila :

Weekly activity bulletin of the Nevado del Huila volcano.
The activity level of the volcano continues at the Yellow activity level or (III): changes in the behavior of volcanic activity.

According to the analysis and evaluation of information obtained by the monitoring network of the Nevado del Huila volcano during the week of March 10 to 16, 2020, the COLOMBIAN GEOLOGICAL SERVICE – Popayán Volcanological and Seismological Observatory reports that:

During the period evaluated, a total of 550 seismic events were recorded, of which 264 were linked to rock fracturing processes (VT type) and 286 to fluid dynamics in volcanic conduits. Of these, 269 were cataloged as long period type events (LP type), 4 as hybrid types (HB type) and 13 as tremor pulses (TR) with low energy. 

The images obtained during the week by the web cameras of Caloto, Tafxnú, Maravillas and La Palma showed a weak degassing of the volcanic system. The sensors for monitoring soil deformation, magnetic fields and infrasonic waves did not record variations associated with changes in volcanic activity.

Therefore, it is concluded that during the evaluated period, the volcano continued to show stable behavior. The Colombian Geological Survey continues to monitor the evolution of the volcanic phenomenon and will report any changes that may occur in due course.

Source : Ingeominas.

Photo : SGC.

Mexico , Popocatepetl :

March 21, 11:00 a.m. (March 21, 5:00 p.m. GMT)

In the past 24 hours, 74 exhalations have been identified according to the Popocatépetl volcano monitoring systems, accompanied by emissions of volcanic gases, small amounts of ash and sometimes incandescent fragments. In addition, 60 minutes of low amplitude tremors were recorded.

A glow was observed at night in the crater area.

As of this morning and at the time of this report, we observe the constant emission of volcanic gases and sometimes light amounts of ash, which are dispersed towards the Northwest.

CENAPRED urges NOT to APPROACH the volcano and especially the crater, because of the danger involved in the fall of ballistic fragments and, in the event of heavy rain, to move away from the bottom of the ravines because of the danger of mudslides and rubble.

The Popocatépetl volcanic alert signaling light is in YELLOW PHASE 2.

Source : Cenapred .