Heightened activity centered on the Philippines and Indonesia today, highlighted by dome growth and ash-producing bursts. At Mayon, a nascent lava flow and frequent collapses generated about 90 pyroclastic flows, while Indonesia’s Semeru stepped up with ash columns to 2 km and more than a hundred explosions. Lewotobi’s alert was lowered to Level 3 – Standby; Taal produced a brief phreatomagmatic burst, and ash affected communities near Fuego and Santa Maria.
United States
Great Sitkin (Watch / Aviation ORANGE) kept slow lava effusion within the summit crater. Kilauea (Watch / Aviation ORANGE) showed strong glow at both vents. At Shishaldin (Advisory / Aviation YELLOW), a steam plume rose above the summit.
Indonesia
Semeru ramped up with ash-and-gas plumes to 2 km, 143 explosions, rockfalls, and PDCs. Lewotobi produced low gas plumes; its alert was lowered to Level 3 – Standby. Shorter ash emissions and frequent blasts were noted at Ibu (122 explosions) and Lewotolok (212 explosions), with several other volcanoes showing unrest. Lava-dome systems at Merapi and Marapi remained active, with Merapi generating seismically detected PDCs.
Philippines
Mayon (Level 3) maintained heightened unrest with a new lava flow, numerous PDCs and rockfalls, and ongoing inflation. Taal produced a brief phreatomagmatic burst that sent a 900 m plume after a 6‑minute precursor (Level 1). Kanlaon emitted ash, including a 15‑minute event, with plumes up to 900 m (Level 2).
Mexico
At Popocatepetl (Yellow Alert – Phase 2), a 95‑minute exhalation sequence lofted plumes to about 1,200 m above the rim.
South America
In Ecuador, Reventador sent ash-and-gas to 800 m, while Sangay showed reduced activity with gas emissions and thermal signals. Peru’s Sabancaya produced a moderate explosion to 2.1 km and showed slight inflation. Colombia’s Purace exhibited shallow rock‑fracturing quakes, tremor pulses, and degassing from crater fissures.
Other
In Guatemala, Fuego generated ash plumes and explosions with ashfall in nearby communities, while Santa Maria produced ash, glow, and short‑runout PDCs. In Costa Rica, Poas recorded frequent long‑period quakes; Rincon de la Vieja and Turrialba stayed at Level 2 – Warning, and Pacaya showed fumarolic activity.
Source: Smithsonian/USGS GVP Daily Volcanic Activity Report (9 Jan 2026).
Activity Summary for 9 January 2026
| Volcano | Country | Activity Type | Keynotes |
|---|---|---|---|
| Dukono | Indonesia | Continuing eruption | Gas-and-vapor plumes to 300 m. |
| Fuego | Guatemala | Continuing eruption | Ash to 737 m; glow and explosions; ashfall reported. |
| Great Sitkin | United States | Continuing eruption | Slow lava effusion in summit crater. |
| Ibu | Indonesia | Continuing eruption | Ash-and-gas plumes to 400 m; 122 explosions. |
| Kilauea | United States | Continuing eruption | Strong crater glow from both vents. |
| Kanlaon | Philippines | Continuing eruption | 15-min ash emission; plumes to 900 m. |
| Lewotobi | Indonesia | Continuing eruption | Gas-and-vapor plumes to 100 m. |
| Lewotolok | Indonesia | Continuing eruption | Ash-and-gas plumes to 300 m; 212 explosions. |
| Marapi | Indonesia | Continuing eruption | Eruption ongoing; Alert Level 2 – Alert. |
| Mayon | Philippines | Eruptive activity increased | Lava flow beginning; numerous PDCs and rockfalls; inflation ongoing. |
| Merapi | Indonesia | Continuing eruption | Seismically detected PDCs. |
| Popocatepetl | Mexico | Continuing eruption | 95-min exhalation sequence; plumes to ~1,200 m. |
| Poas | Costa Rica | Continuing eruption | Frequent long-period seismic events. |
| Purace | Colombia | Continuing eruption | Shallow fracturing and tremor; LP events; degassing at fissures. |
| Reventador | Ecuador | Continuing eruption | Ash-and-gas plumes to 800 m; SO2 degassing. |
| Sabancaya | Peru | Continuing eruption | Moderate explosion with ash to 2,100 m; slight inflation; thermal anomalies. |
| Sangay | Ecuador | Eruptive activity decreased | Gas plumes; SO2 degassing; thermal anomalies. |
| Santa Maria | Guatemala | Continuing eruption | Ash plumes; glow and explosions; short PDCs with ashfall. |
| Semeru | Indonesia | Eruptive activity increased | Ash-and-gas plumes to 2,000 m; 143 explosions; rockfalls and PDCs. |
| Taal | Philippines | Continuing eruption | Minor phreatomagmatic burst (~4 min); plume to 900 m; 6-min precursor. |
| Bur ni Telong | Indonesia | Unrest activity decreased | Unrest decreasing; Alert Level 2 – Alert. |
| Gamalama | Indonesia | Unrest | Gas-and-vapor plumes to 50 m. |
| Iliwerung | Indonesia | Unrest | Ongoing unrest; Alert Level 2 – Alert. |
| Karangetang | Indonesia | Unrest | Gas-and-vapor plumes to 10 m. |
| Kerinci | Indonesia | Unrest | Gas-and-vapor plumes to 50 m. |
| Lokon-Empung | Indonesia | Unrest | Gas-and-vapor plumes to 15 m. |
| Pacaya | Guatemala | Unrest | Fumarolic activity. |
| Raung | Indonesia | Unrest | Gas-and-vapor plumes to 200 m. |
| Rincon de la Vieja | Costa Rica | Unrest | Ongoing unrest; Level 2 – Warning. |
| Sangeang Api | Indonesia | Unrest | Ongoing unrest; Alert Level 2 – Alert. |
| Shishaldin | United States | Unrest | Steam/vapor plume above the summit. |
| Soputan | Indonesia | Unrest | Ongoing unrest; Alert Level 2 – Alert. |
| Talang | Indonesia | Unrest | Gas-and-vapor plumes to 50 m. |
| Turrialba | Costa Rica | Unrest | Ongoing unrest; Level 2 – Warning. |
| Egon | Indonesia | Background or normal activity | Background state; Level 1 – Normal. |
| Tangkuban Parahu | Indonesia | Background or normal activity | Background state; Level 1 – Normal. |