Strong activity at Suwanose-jima volcano (JMA webcam)
The volcano continues to produce frequent and intense strombolian explosions and produces a low level ash plume.
Suwanose-jima seen from the NE (JMA webcam)
Bright glow from intense strombolian activity, or perhaps even the presence of a small lava lake or lava fountains, are visible on the JMA webcam on Nakanoshima island to the NE. VAAC Tokyo reports continuous low-level ash emissions.
Sat, 28 Dec 2013, 16:38
Glow from Suwanose-jima volcano this evening
The volcano's activity has picked up. Today, VAAC Tokyo reported at least 3 explosions with low-level ash plumes. Bright glow from the crater area is visible at night, suggesting elevated strombolian to vulcanian-type activity. Here is a video of today's activity:
Read allFri, 27 Dec 2013, 07:25
Gas (+ash?) plume from Suwanose-Jima this morning
A small explosion occurred this morning (JST time) at the volcano; VAAC Tokyo reported an ash plume at 4,000 ft (1,2 km) altitude.
Wed, 25 Dec 2013, 06:00
Based on information from JMA, the Tokyo VAAC reported explosions from Suwanose-jima during 26-30 December. Explosions during 27-28 December generated plumes that rose to an altitude over 1.5 km (5,000 ft) a.s.l. and drifted SE.
Read allFri, 6 Dec 2013, 15:15
Glow above the crater of Suwanose-jima volcano (Japan)
Weak reddish glow can be seen above the active Ontake crater at night. It is possible (if not likely) that there is weak strombolian activity. During the past weeks, a few more energetic explosions produced ash plumes that could be identified by VAAC Tokyo.
Wed, 27 Nov 2013, 10:23
Explosive activity has resumed at the remote volcano in the Tokara Island chain. VAAC Tokyo reported explosions yesterday and this morning, with ash plumes rising to 4,000-6,000 ft (1.2-1.8 km) altitude.
Wed, 27 Nov 2013, 06:00
Based on information from JMA, the Tokyo VAAC reported that an explosion from Suwanose-jima on 27 November generated a plume that rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted E.
Read allWed, 16 Oct 2013, 06:00
According to the Tokyo VAAC, a pilot observed an ash plume from Suwanose-jima on 21 October. Based on information from JMA the VAAC noted that a plume rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted S that same day.
Read allThu, 12 Sep 2013, 08:36
A new eruption was reported this morning producing an ash plume rising about 1 km above the Ontake crater to an altitude of 6,000 ft (1.8 km) and drifting NW.(VAAC Tokyo)
Wed, 11 Sep 2013, 06:00
According to the Tokyo VAAC, the JMA reported that on 12 September an eruption from Suwanose-jima generated an ash plume that rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted NW.
Read allFri, 6 Sep 2013, 09:31
Eruptions continue on the remote island. An explosion this morning produced an ash plume rising to 7,000 ft (2.1 km) altitude (VAAC Tokyo).
Wed, 4 Sep 2013, 06:00
According to the Tokyo VAAC, the JMA reported that during 5-6 September explosions from Suwanose-jima generated ash plumes that rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted NW and N.
Read allWed, 28 Aug 2013, 08:54
The volcano has entered an eruptive phase with frequent explosions, which over the past 2 days produced several ash plumes rising as high as 12,000 ft (3.6 km) altitude.
Wed, 28 Aug 2013, 06:00
According to the Tokyo VAAC, the JMA reported that on 28 August pilots observed ash plumes from Suwanose-jima that rose to altitudes of 3-3.7 km (10,000-12,000 ft) a.s.l. and drifted E and NW. Explosions during 28-29 August generated ash plumes that rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted NE.
Read allMon, 26 Aug 2013, 12:24
An explosion at 01:54 GMT was reported by VAAC Tokyo earlier today. The height of the ash plume could not be determined.
Wed, 21 Aug 2013, 06:00
According to the Tokyo VAAC, the JMA reported explosions from Suwanose-jima during 26-27 August. Plumes rose to an altitude of 1.2 km (4,000 ft) a.s.l. on 27 August, and drifted NE and SE.
Read allThu, 15 Aug 2013, 16:33
Thu, 18 Jul 2013, 12:17
During an excursion to the crater yesterday, we found the volcano relatively calm. We observed only strong degassing from several vents in the crater of the volcano. The degassing was accompanied by relatively loud hissing and acoustic vibrations. Seismic activity is low, but there is continuous tremor, which might be caused by the degassing activity. According to local observers, no recent (past few weeks) explosions or ash emissions have occurred.
Tue, 9 Jul 2013, 14:28
VAAC Tokyo reported a small ash plume from the volcano at 5,000 ft (1.5 km) elevation today. Likely, some stronger strombolian-type explosion has occurred at the volcano, whose activity is similar to Stromboli in Italy.
Wed, 3 Jul 2013, 06:00
According to the Tokyo VAAC, a pilot observed an ash plume from Suwanose-jima that rose to an altitude of 1.5 km (5,000 ft) a.s.l. Ash was not detected in satellite images.
Read allSat, 23 Feb 2013, 09:38
Location of recent earthquakes under Suwanose-Jima
A swarm of earthquakes occurred over the the past days in an area a few km south of the island at about 10 km depth.