Autor: global-affair

Satellite image of Semeru volcano on 28 Jan 2026

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in SE direction.
The full report is as follows:

FVAU02 at 06:38 UTC, 28/01/26 from ADRM
VA ADVISORY
DTG: 20260128/0640Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/112
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL150 LAST REPORTED AT 27/2212Z
EST VA DTG: 28/0620Z
EST VA CLD: SFC/FL150 S0803 E11255 – S0813 E11327 – S0832
E11314 – S0807 E11252 MOV SE 10KT
FCST VA CLD +6 HR: 28/1220Z SFC/FL150 S0803 E11255 – S0818
E11329 – S0838 E11315 – S0807 E11252
FCST VA CLD +12 HR: 28/1820Z SFC/FL150 S0802 E11255 – S0822
E11330 – S0840 E11315 – S0807 E11251
FCST VA CLD +18 HR: 29/0020Z SFC/FL150 S0803 E11255 – S0819
E11330 – S0840 E11315 – S0807 E11251
RMK: VA NOT IDENTIFIABLE ON CURRENT SAT IMAGE DUE TO MET
CLOUD. HOWEVER, GROUND REPORTS INDICATE INTERMITTENT
DISCRETE EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED
ON GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260128/1240Z=

Volcanic Ash Advisory Center Darwin (VAAC) issued the following report:

FVAU04 at 00:17 UTC, 28/01/26 from ADRM
VA ADVISORY
DTG: 20260128/0017Z
VAAC: DARWIN
VOLCANO: MARAPI 261140
PSN: S0023 E10028
AREA: INDONESIA
SOURCE ELEV: 2885M AMSL
ADVISORY NR: 2026/19
INFO SOURCE: CVGHM
ERUPTION DETAILS: ERUPTION REPORTED AT 27/2348Z
EST VA DTG: 28/0000Z
EST VA CLD: SFC/FL110 S0021 E10024 – S0003 E10056 – S0021
E10106 – S0036 E10051 – S0027 E10024 MOV E 10KT
FCST VA CLD +6 HR: 28/0600Z NO VA EXP
FCST VA CLD +12 HR: 28/1200Z NO VA EXP
FCST VA CLD +18 HR: 28/1800Z NO VA EXP
RMK: CVGHM REPORTED ERUPTION FROM GROUND. VA NOT ABLE TO BE
OBSERVED FROM GROUND BUT WOULD BE EXPECTED TO DISSIPATE
WITHIN 6 HOURS. VA HEIGHT AND FORECAST ESTIMATED FROM
TYPICAL BEHAVIOUR AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260128/0617Z=

Explosive and effusive activity stood out today across several regions. The Philippines‘ Mayon produced ongoing lava effusion with minor Strombolian bursts, while Peru’s Sabancaya showed higher explosive output with ash rising 2.5 km. Guatemala’s Fuego tallied up to 10 explosions per hour and Ecuador’s Sangay recorded hundreds of blasts, as Kilauea and Great Sitkin held at Aviation ORANGE.

United States
Kilauea and Great Sitkin stayed at Watch with Aviation ORANGE as their slow eruptions persisted. Unrest also continued at Shishaldin (Advisory / Aviation YELLOW).

Indonesia
Frequent explosive activity was noted at Ibu (102 explosions; ash to 800 m), Lewotolok (191 explosions, low plumes), and Semeru (108 explosions). Dukono and Marapi produced low ash plumes, the latter from a single explosion to 600 m. At Merapi, 111 rockfalls were recorded with only weak gas release. Unrest continued at several others, including Karangetang and Lewotobi; Kerinci, Raung, and Iliwerung also remained elevated.

Japan
At Yakedake, unrest increased; authorities kept Level 2 restrictions near the crater.

Philippines
Mayon showed dome growth with steady lava effusion and minor, episodic Strombolian bursts. Instruments detected 44 signals linked to pyroclastic density currents and 155 rockfalls; crater glow was visible. The alert remained at Level 3.

Mexico
Popocatepetl released gas-and-steam emissions, and a M1.1 volcano-tectonic quake was recorded; the alert stayed at Yellow Phase 2.

South America
In Ecuador, Sangay generated 297 explosions with ash rising to 1.5 km, while Reventador produced 36 explosions and ash to 1 km. In Peru, Sabancaya saw increased activity with three explosions and ash-and-gas plumes up to 2.5 km, along with thermal anomalies.

Other
In Guatemala, Fuego produced up to 10 explosions per hour, lofting ash to about 1 km and ejecting incandescent material 300 m; shockwaves and rumbling were noted. In Costa Rica, Poas remained at Level 2 – Warning (Aviation Yellow), while Rincon de la Vieja and Turrialba stayed in unrest.

Source: Smithsonian/USGS GVP Daily Volcanic Activity Report (Report date: 26 January 2026).

Activity Summary for 26 January 2026