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Asamayama volcano (Honshu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 August-27 August 2019 (New Activity / Unrest)

Wed, 21 Aug 2019, 06:00
06:00 AM | BY: VN
JMA reported that at 1928 on 25 August a small eruption at Asamayama generated a grayish-white ash plume that rose 600 m above the crater rim and drifted E. Large blocks were also ejected from the crater. Minor ashfall was reported in Karuizawa Town, Nagano Prefecture, about 4 km E.
The plume then turned white and continuous emissions rose 200 m during 25-26 August. The Alert Level remained at 2 (on a scale of 1-5).

Source: Japan Meteorological Agency (JMA)
---
From: Global Volcanism Program, 2019. Report on Asamayama. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 21 August-27 August 2019. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 14 Aug 2019, 06:00

Asamayama volcano (Honshu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 August-20 August 2019 (New Activity / Unrest)

JMA reported that, after a small phreatic eruption occurred at Asamayama on 7 August, both seismic activity and sulfur dioxide emissions temporarily increased and then decreased later that day. During 8-19 August white plumes generally rose 400 m above the crater rim; occasionally they rose as high as 800 m. Sulfur dioxide emissions were 70-300 tons per day. ... Read all
Thu, 8 Aug 2019, 10:00

Asama volcano (Honshu Island, Japan): new eruption

Eruption of Asama volcano yesterday (image: JMA webcam)
A small eruption occurred at the volcano yesterday, apparently with little warning. An explosion produced an ash plume that rose approx. 1800 m above the crater. Read all
Show more

Asamayama volcano (Honshu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 August-27 August 2019 (New Activity / Unrest)

Wed, 21 Aug 2019, 06:00
06:00 AM | BY: VN
JMA reported that at 1928 on 25 August a small eruption at Asamayama generated a grayish-white ash plume that rose 600 m above the crater rim and drifted E. Large blocks were also ejected from the crater. Minor ashfall was reported in Karuizawa Town, Nagano Prefecture, about 4 km E.
The plume then turned white and continuous emissions rose 200 m during 25-26 August. The Alert Level remained at 2 (on a scale of 1-5).

Source: Japan Meteorological Agency (JMA)
---
From: Global Volcanism Program, 2019. Report on Asamayama. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 21 August-27 August 2019. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 14 Aug 2019, 06:00

Asamayama volcano (Honshu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 August-20 August 2019 (New Activity / Unrest)

JMA reported that, after a small phreatic eruption occurred at Asamayama on 7 August, both seismic activity and sulfur dioxide emissions temporarily increased and then decreased later that day. During 8-19 August white plumes generally rose 400 m above the crater rim; occasionally they rose as high as 800 m. Sulfur dioxide emissions were 70-300 tons per day. ... Read all
Thu, 8 Aug 2019, 10:00

Asama volcano (Honshu Island, Japan): new eruption

Eruption of Asama volcano yesterday (image: JMA webcam)
A small eruption occurred at the volcano yesterday, apparently with little warning. An explosion produced an ash plume that rose approx. 1800 m above the crater. Read all
Show more
Asama volcano
complex volcano 2568 m / 8,425 ft
Honshu (Japan), 36.4°N / 138.53°E
Current status: normal or dormant (1 out of 5)
Asama webcams / live data | News/Updates | Earthquakes | Books
Asama volcano eruptions:
2019, 2015, 2009, 2008, 2004, 2003, 1990, 1983, 1982, 1982, 1973, 1965, 1961, 1958-59, 1953-55, 1952, 1952, 1950-51, 1949, 1947, 1946, 1944-45, 1938-42, 1935-37, 1934, 1934, 1933, 1931-32, 1930, 1929, 1929, 1927-28, 1924, 1922, 1920-21, 1919, 1918(?), 1917, 1916, 1915, 1914, 1909-14, 1908, 1908, 1907, 1907, 1906, 1905(?), 1904, 1903, 1902, 1902, 1900-01, 1899, 1899, 1894, 1889, 1879, 1878(?), 1875, 1869, 1815, 1803, 1803, 1783, 1779(?), 1777, 1776, 1769, 1762, 1755, 1754, 1733, 1732, 1731, 1729, 1729, 1728, 1723, 1723, 1722, 1721, 1720, 1719, 1718, 1717, 1711, 1710, 1708-09, 1706, 1704, 1703, 1669, 1661, 1661, 1660, 1659, 1658, 1657, 1656, 1655, 1653, 1652, 1651, 1650(?), 1649, 1648, 1648, 1647, 1645, 1644, 1609, 1605, 1604, 1600, 1598, 1597, 1596, 1596, 1595(?), 1591, 1590, 1532, 1528, 1527, 1518, 1427(?), 1281, 1108, 887, 685
Typical eruption style
explosive
Assama volcano satellite image by (c) Google Earth View & VolcanoDiscovery
Assama volcano satellite image by (c) Google Earth View & VolcanoDiscovery
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