Suwanosejima volcano (Ryukyu Islands, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 24 March-30 March 2021 (Continuing Activity)
JMA reported that the seismic network for Suwanosejima's Ontake Crater detected a total of 17 explosions during 19-26 March. These events produced eruption plumes that rose as high as 1.2 km above the crater rim, drifting S, W, and SW, and ejected bombs as far as 500 m away from the crater. Incandescence from the crater was occasionally visible at night.
mer., 24 mars 2021, 06:0006:00 AM | AUTEUR : VN
On 30 March at least 18 explosions were detected, generating ash plumes that rose 600-1,500 m above the crater drifting E, SE, and NE and ejecting material as far as 800 m S of the crater. On 31 March the Alert Level was raised to 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
From: Global Volcanism Program, 2021. Report on Suwanosejima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 24 March-30 March 2021. Smithsonian Institution and US Geological Survey.
mar., 23 mars 2021, 19:00
Suwanose-jima Volcano Volcanic Ash Advisory: EXPLODED AT 20210323/1833Z FL040 EXTD W OBS VA DTG: 23/1830Z
mar., 23 mars 2021, 06:00