Kategorie: Climate Change

New lava flows from the Halemaʻumaʻu’s north vent (image: Hawaiian Volcano Observatory)

Lava fountains returned to the Halemaʻumaʻu crater floor’s north vent.

On 25 March, the 15th effusive episode commenced with eight small spattering events (9:27, 9:55, 10:11, 10:29, 10:48, 11:07, 11:27, and 11:45 AM local time), which gradually transited to form vigorous lava fountains, lava jets have reached approx. 150-300 feet (50-100 meters) in height. It has triggered multiple lava flows covering the Halemaʻumaʻu crater floor.
Around midday, the south vent also became active, feeding lava onto the crater floor.

Currently, lava flows from both vents have covered approximately 5% of the Halemaʻumaʻu crater floor

Prior to the erutpion, a seismic tremor peaked as usual and instruments recorded a ground uplift transition from inflation to deflation beneath Halemaʻumaʻu crater.

This marks the 15th eruptive episode since December 23, 2024.

Source: Hawaiian Volcano Observatory volcano activity update 26 March 2025

Map of today’s active volcanoes

Etna (Sicily, Italy): (25 Mar) The National Institute of Geophysics and Volcanology in Catania reported an explosive eruption at the volcano’s South-East crater yesterday.
At about 10:22 local time, the new eruptive activity was limited due to dense clouds, but forecast models indicate an ash column to be propagated in the northeast direction.
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At about 08:40 local time, the seismic network recorded a typical spike in volcanic tremor, indicating rapid magma flux towards the surface through the volcanic conduits. The tremor has been localized at the SE Crater area at an altitude between 2,900 and 3,000 meters above sea level.

Sakurajima (Kyushu, Japan): (25 Mar) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20250325/0245Z OVER FL080 EXTD E OBS VA DTG:25/0240Z

Canlaon (Central Philippines): (25 Mar) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20250325/0716Z FL110 EXTD SW REPORTED OBS VA DTG:25/0740Z

Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 25 kts in NE direction.
The full report is as follows: VA TO FL070 REPORTED AT 25/1451Z EST VA DTG:25/1910Z to 7000 ft (2100 m)

Lewotolo (Lesser Sunda Islands): (24 Mar) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 and is moving at 15 kts in E direction.
The full report is as follows: VA TO FL060 REPORTED AT 24/2227Z OBS VA DTG:24/2240Z to 6000 ft (1800 m)

Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 25/1456Z EST VA DTG:25/1830Z

Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .
The full report is as follows: VA TO FL060 REPORTED AT 24/2254Z MOV EAST EST VA DTG:25/1310Z to 6000 ft (1800 m)

White Island (New Zealand): (25 Mar) Over the past few weeks, webcams at Whakatāne and Te Kaha have continued to capture steam and gas plumes, with occasional traces of ash.
At times, the MetService has also detected small amounts of ash in the plume via satellite imagery. From the coast, this can sometimes appear as a hazy plume drifting downwind from the volcano.
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Recent gas and observation flights have confirmed these coastal observations. Friday’s flight recorded minor changes in the active vent area, which has slightly expanded. Impact craters were also observed, indicating occasional explosive activity that has ejected ballistic blocks up to 600 meters from the vent onto the crater floor. The exact number and timing of these events remain unknown, but such activity is common at Whakaari as vents develop. The impacts of these eruptions have remained confined to the Main Crater floor.
Thermal infrared measurements show that vent temperatures have increased from 220 °C in January to 360 °C on Friday, though they remain well below the peak of over 580 °C recorded in August 2024. Sulphur dioxide (SO₂) emissions continue to be detected by satellite under favorable conditions. When northerly winds prevail, the presence of minor ash in the steam and gas plume, along with gases, may be noticeable along the coast as a sulfuric odor.

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows: CLEAR VA EM to 22000 ft (6700 m)

Santiaguito (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 .
The full report is as follows: OCNL VA EMS to 13000 ft (4000 m)

Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMS

Sangay (Ecuador): (24 Mar) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EMS

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMS

The tremor plot at the Etna depicting a sharp peak of volcanic tremor yesterday (image: National Institute of Geophysics and Volcanology Catania)