Schlagwort: volcano

Tall lava fountains from Kilauea volcano this morning (image: HVO webcam)

The 20th lava fountaining episode began from the active vents at Halema’uma’u summit crater a short time ago, at 5:28 p.m. HST local time on May 6, 2025.
The Hawaiian Volcano Observatory (HVO) reported: „..cyclic gas-pistoning transitioned to continuous eruption of lava fountains that grew rapidly in vigor and height. Fountains from the north vent quickly reached heights of greater than 500 ft (150 m). North vent lava fountains are feeding fast moving lava flows that are covering the floor of Halema’uma’u crater, including a flow that poured over the south vent. The south vent is not showing signs of increased activity at this time.“

„The onset of sustained fountaining was accompanied by a rapid change in summit tilt from inflation to deflation along with a rapid increase in tremor. The Uēkahuna tiltmeter (UWD) recorded approximately 8 microradians of inflationary tilt between the end of episode 19 and the beginning of episode 20 sustained fountaining.
„Episode 20 sustained fountaining was preceded by just under 31 hours of precursory low-level activity that included gas-pistoning events in the north vent that produced low lava dome fountains, overflows, and drainbacks, as well as sluggish lava flows from the south vent.“

„Each episode of Halemaʻumaʻu lava fountaining since December 23, 2024, has continued for 13 hours to 8 days and episodes have been separated by pauses in eruptive activity lasting less than 24 hours to 12 days.“

Source: Timeline of eruption episodes since December 23, 2024 (HVO / USGS)

No changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor Kīlauea and will issue an eruption update tomorrow morning unless there are significant changes before then.

Map of today’s active volcanoes

Etna (Sicily, Italy): (6 May) A new effusive episode occurred at the Southeast Crater last night.
A new lava flow emerged on the eastern flank.
This marks 12th eruptive phase over the past two months.

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 10 kts in S direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 06/0440Z EST VA DTG:06/1120Z to 7000 ft (2100 m)

Semeru (East Java, Indonesia): 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 NW direction.
The full report is as follows: VA TO FL150 REPORTED AT 06/0610Z EST VA DTG:06/1020Z to 15000 ft (4600 m)

Marapi (Western Sumatra, Indonesia): (6 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 11000 ft (3400 m) altitude or flight level 110 and is moving at 10 kts in E direction.
The full report is as follows: VA OBS TO FL110 AT 06/0210Z OBS VA DTG:06/0210Z to 11000 ft (3400 m)

Dukono (Halmahera): (5 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 .
The full report is as follows: VA OBS TO FL090 AT 05/2250 MOV SE OBS VA DTG:05/2250Z to 9000 ft (2700 m)

White Island (New Zealand): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Wellington warned about a volcanic ash plume that rose up to estimated 3000 ft (900 m) altitude or flight level 030 and is moving at 05 kts in E direction.
The full report is as follows: ERUPTION AT 20250503/0040Z CONTINUOUS LOW LEVEL ERUPTION to 3000 ft (900 m)

Atka (United States, Aleutian Islands): (6 May) Since the minor explosive event at 10:34 local time on April 25, no activity has been observed at the Atka volcanic complex.
As a result, the Aviation Color Code and Alert Level are being downgraded to GREEN/NORMAL.
Source: Alaska Volcano Observatory volcano activity update 6 May 2025

Popocatépetl (Central Mexico): (6 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 .
The full report is as follows: DISCRETE VA EM. to 21000 ft (6400 m)

Santiaguito (Guatemala): Mild explosive activity continues from the volcano. The Volcanic Ash Advisory Center (VAAC) Washington reported intermittent emissions of volcanic ash plumes.
The full report is as follows: sporadic emissions of volcanic ash

Poas (Costa Rica): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 .
The full report is as follows: POSSIBLE VA EMS. to 10000 ft (3000 m)

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 .
The full report is as follows: POSSIBLE ONGOING VA EMS. to 21000 ft (6400 m)

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: ONGOING VA EMS. to 14000 ft (4300 m)

The lava flow from the SE Crater last night (image: Boris Behncke)