JMA reported that seven explosions from Showa Crater at Aira Caldera's Sakurajima volcano during 22-25 April ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night. The Alert Level remained at 3 (on a scale of 1-5).
The volcano has been unusually calm recently. No significant explosion was recorded since 12 April.
JMA reported that during 7-11 April two explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 800 m. Incandescence from the crater was detected during the night of 10 April. The Alert Level remained at 3 (on a scale of 1-5).
JMA reported that during 31 March-4 April two explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. Incandescence from the crater was occasionally detected at night. The Alert Level remained at 3 (on a scale of 1-5).
JMA reported that 20 explosions from Showa Crater at Aira Caldera's Sakurajima volcano during 24-28 March ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night on 25 March. The Alert Level remained at 3 (on a scale of 1-5).
The volcano has been more productive again compared to most of this year so far. During the past 48 hours, VAAC Tokyo reported 8 explosions which ejected ash plumes to maximum of 8,000 ft (2.4 km) altitude.
JMA reported that during 17-20 March five explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night during 17-18 March. The Alert Level remained at 3 (on a scale of 1-5).
JMA reported that during 10-14 March two explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night. Volcanologists conducting a field survey on 10 March noted that sulfur dioxide emissions were 190 tons per day, lower than the 1,900 tons per day they measured on 4 March.
Fri, 7 Mar 2014, 16:11
Explosions have been becoming more frequent again. During the past 48 hours, VAAC Tokyo counted 8 eruptions of small to moderate size (ash plumes rising up to between 5-9,000 ft altitude).
Wed, 5 Mar 2014, 06:00
JMA reported that during 3-7 March six explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night. The Alert Level remained at 3 (on a scale of 1-5).
Read allWed, 26 Feb 2014, 06:00
JMA reported that during 24-28 February two explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. Incandescence from the crater was detected during 24-26 February. The Alert Level remained at 3 (on a scale of 1-5).
Read allSun, 23 Feb 2014, 18:50
Eruption lightning from an explosion of Sakurajima this evening
The volcano has increasingly strong explosions. A vulcanian eruption this evening around 23:10 local time (see video) produced an ash column rising approx 3 km and was accompanied by abundant eruption lightning and ejections of lots of incandescent material. Constant ash emissions constant ash emissions (probably from deep-seated strombolian activity) has been following the explosion.
Read allThu, 20 Feb 2014, 17:50
Eruptions have been stronger again during the past days. In the 4 days since 16 Feb, at least 6 vulcanian-type explosions were recorded with ash plumes rising up to 12,000 ft (3.7 km) altitude.
Wed, 19 Feb 2014, 06:00
JMA reported that during 17-21 February three explosions from Showa Crater at Aira Caldera's Sakurajima volcano ejected tephra as far as 1,300 m. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported that explosions during 19-20 and 22-25 February generated ash plumes that rose to altitudes of 1.8-3.7 km (6,000-12,000 ft) a.s.l. and drifted NE, SE, and S.
Read allWed, 12 Feb 2014, 06:00
The Tokyo VAAC reported that explosions during 12-18 February from Aira Caldera's Sakurajima volcano generated ash plumes on most days that rose to altitudes of 1.5-3.7 km (5,000-12,000 ft) a.s.l. and drifted E, NE, and N. On 12 February a pilot observed an ash plume drifting E at an altitude of 3 km (10,000 ft) a.s.l.
Read allWed, 5 Feb 2014, 06:00
JMA reported that during 3-7 February five explosions from Sakurajima's Showa Crater ejected tephra as far as 1,300 m. Incandescence from the crater was detected at night. The Alert Level remained at 3 (on a scale of 1-5).
Read allSun, 2 Feb 2014, 11:32
The volcano's typical small to moderate vulcanian-type explosions have been occurring more frequently again, and now appear to average 1-2 per day. Ash plumes regularly reach 10-12,000 ft (3-3.6 km) altitude.
Wed, 29 Jan 2014, 06:00
JMA reported that during 27-31 January five explosions from Sakurajima's Showa Crater ejected tephra as far as 1,300 m. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported that on 29 January and during 31 January-2 February and on 4 February ash plumes rose to altitudes of 1.5-4.9 km (5,000-12,000 ft) a.s.l. and drifted N, NE, and E.
Read allTue, 28 Jan 2014, 19:00
Eruption of Sakurajima volcano early on 27 Jan
The volcano seems slowly to produce more powerful vulcanian explosions again. An eruption yesterday morning at 2am local time ejected an ash plume that rose to 12,000 ft (3.6 km) and covered the crater with incandescent material. It was the 10th explosion in 2014:
Read allWed, 22 Jan 2014, 08:51
Medium-sized explosion from Sakurajima this morning
The volcano had an explosion this morning followed by near-continuous ash venting. The eruption sent an ash plume over Tarumizu town to the SW (see video). VAAC Tokyo estimated the maximum height of the ash plume to 17,000 ft (5 km), but webcam images suggest a significantly smaller size (2-3 km altitude). Overall, the volcano has been comparably calm over the past week.
Read allWed, 22 Jan 2014, 06:00
JMA reported that during 20-24 January three explosions from Sakurajima's Showa Crater ejected tephra as far as 1,300 m. An explosion on 22 January generated a small pyroclastic flow that traveled 500 m SE, and tephrafall to the S. The Alert Level remained at 3 (on a scale of 1-5).
Read allFri, 17 Jan 2014, 08:27
Vulcanian-type explosions, which presented a spectacular show during much of the past year, are again becoming more frequent at the volcano, with now averaging one event per day.
Read allWed, 15 Jan 2014, 06:00
The Tokyo VAAC reported that an explosion from Sakurajima on 17 January generated plumes that rose to altitude of 2.4-2.7 km (8,000-9,000 ft) a.s.l. and drifted SE.
Read allThu, 9 Jan 2014, 07:32
Following an unusually long interval with no real explosions, two small to modest vulcanian eruptions have again occurred on 6 January and today, with ash plumes reported to 10,000 ft (3 km) and 6,000 ft (1.8 km) altitude.
Wed, 8 Jan 2014, 06:00
JMA reported that during 6-10 January two explosions from Sakurajima's Showa Crater ejected tephra as far as 1,300 m. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported that an explosion on 9 January generated a plume that rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted SE.
Read allMon, 6 Jan 2014, 14:45
Sakurajima venting ash yesterday (Tarumizu webcam)
No significant discrete explosions have been reported since 26 Dec, which is one of the longest periods without vulcanian explosions in recent years.
Read allWed, 1 Jan 2014, 06:00
JMA reported that during 30 December 2013-6 January 2014 no explosions occurred from Sakura-jima's Showa Crater; weak incandescence from the crater was visible at night during 30-31 December. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported that an explosion on 7 January generated a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted E.
Read all