Activity of Anak Krakatau, Gunung Ibu and Santiaguito

Anak Krakatau erupted on Thursday, February 03, 2022 at 4:15 p.m. WIB with the height of the ash column observed at ± 200 m above the summit (± 357 m above sea level). The ash column is observed to be gray with moderate intensity to the northeast. This eruption was recorded on a seismograph with a maximum amplitude of 10 mm.

On Friday February 04, 2022 at 10:25 WIB, another eruptive episode occurred, with an ash column observed ± 800 m above the summit (± 957 m above sea level). It is observed that the ash column is gray in color with a thick intensity towards the southwest. This eruption was recorded on a seismograph with a maximum amplitude of 45 mm and a duration of 49 seconds.

New eruptive episode on Friday February 4, 2022 at 12:46 p.m. WIB with an ash column observed at ± 1000 m above the summit (± 1157 m above sea level). It is observed that the ash column is gray in color with a thick intensity towards the south. This eruption was recorded on a seismograph with a maximum amplitude of 46 mm and a duration of 59 seconds.

PVMBG recommendation:
People/tourists are not allowed to approach the crater within 2 km of the crater

Sources: PVMBG, Magma Indonesia, Sentinel-2

In the Moluccas, the Gunung Ibu erupted on Friday February 04, 2022 at 09:56 WIT, with an ash column observed at ± 1000 m above the peak (± 2325 m above sea level). It is observed that the ash column is gray in color with a thick intensity towards the north. This eruption was recorded on a seismograph with a maximum amplitude of 26 mm and a duration of 60 seconds.

Sources: PVMBG, Magma Indonesia

On the morning of February 3, the Insivumeh recorded pyroclastic flows at Santiaguito. They qualified as moderate, of the "boulders and ashes" type, and affected the western and southwestern flanks, generating ash clouds at 600-800 meters in height.

Ash falls are reported on San Martin Sacatepéquez, Llanos del Pinal, and Xecaraco (Quetzaltenango) and Loma Linda (el Palmar).

From the morning of January 30 until the morning of February 3 at 9:45 local time, 20 pyroclastic flows were recorded, moving over distances between 1,000 and 3,000 meters. A permanent and sustained degassing is observed above the crater of the Caliente dome.

Forecasts are for more moderate to strong pyroclastic flows to follow over the next few days or weeks, generating more ash moving with the winds.

A ban on access is established in an area of ​​5 km around the dome of Santiaguito.

Sources: Insivumeh & Conred