Mount Semeru

Level III – Watch Significant increase in activity; an eruption is possible. Clear the recommended radius and prepare to evacuate. Status changed: 19 Oct 2026, 16:17 WITA

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EruptionPVMBG eruption notice (MAGMA-VEN)

Erupsi terakhir 24 Oct 2026, 07:34 WITA

20 hours ago · waktu setempat 24 Okt 2026, 06:34 WIB

2×eruptions · 24 Oct

1.000 mhighest ash · 24 Oct

1.000 mlatest ash column

124 dtklatest duration

Timeline (72 h)bar height = ash column

3 days ago2 daysyesterdaynow

Telah terjadi erupsi G. Semeru,Jawa Timur pada hari Saturday, 24 October 2026, 06:34 WIB dengan tinggi kolom abu teramati ± 1000 m di atas puncak (± 4676.0 m di atas permukaan laut). Kolom abu teramati berwarna putih hingga kelabu dengan intensitas tebal ke arah tenggara. Letusan ini terekam di seismogram dengan amplitudo maksimum 19.0 mm dan durasi sementara +/- 124.0 detik.

PVMBG recommendations

Rekomendasi 1. Tidak melakukan aktivitas apapun di sektor tenggara di sepanjang Besuk Kobokan, sejauh 13 km dari puncak (pusat erupsi). Di luar jarak tersebut, masyarakat tidak melakukan aktivitas pada jarak 500 meter dari tepi sungai (sempadan sungai) di sepanjang Besuk Kobokan karena berpotensi terlanda perluasan awan panas dan aliran lahar hingga jarak 17 km dari puncak. 2. Tidak beraktivitas dalam radius 5 Km dari kawah/puncak Gunung Api Semeru karena rawan terhadap bahaya lontaran batu (pijar). 3. Mewaspadai potensi awan panas, guguran lava, dan lahar di sepanjang aliran sungai/lembah yang berhulu di puncak Gunung Api Semeru, terutama sepanjang Besuk Kobokan, Besuk Bang, Besuk Kembar, dan Besuk Sat serta potensi lahar pada sungai-sungai kecil yang merupakan anak sungai dari Besuk Kobokan.

Foto erupsi Gunung Semeru — PVMBG eruption photo · 24 Oct 2026, 06:34 WIB

VONA ORANGE Diterbitkan 20261024/1705Z · Volcano Observatory Notice for Aviation

Eruption at 1705 UTC (0005 local).

Ash-cloud is not observed.

Eruption recorded on seismogram with maximum amplitude 23 mm and maximum duration 115 second.

Recommendations

1. Tidak melakukan aktivitas apapun di sektor tenggara di sepanjang Besuk Kobokan, sejauh 13 km dari puncak (pusat erupsi). Di luar jarak tersebut, masyarakat tidak melakukan aktivitas pada jarak 500 meter dari tepi sungai (sempadan sungai) di sepanjang Besuk Kobokan karena berpotensi terlanda perluasan awan panas dan aliran lahar hingga jarak 17 km dari puncak.

2. Tidak beraktivitas dalam radius 5 Km dari kawah/puncak Gunung Api Semeru karena rawan terhadap bahaya lontaran batu (pijar).

3. Mewaspadai potensi awan panas, guguran lava, dan lahar di sepanjang aliran sungai/lembah yang berhulu di puncak Gunung Api Semeru, terutama sepanjang Besuk Kobokan, Besuk Bang, Besuk Kembar, dan Besuk Sat serta potensi lahar pada sungai-sungai kecil yang merupakan anak sungai dari Besuk Kobokan.

Latest report

6-hour report, 2026-10-24, 18:00-24:00 WIB · Sigit Rian Alfian

Visual observation

The volcano is covered by fog 0-III. Crater smoke not observed.

Climatology

Weather overcast to rain, weak wind towards west and northwest. Air temperature about 19-20°C.

Seismicity

18 Explosion/eruption events, amplitude 10-25 mm, duration 77-183 s.
4 Rockfall events, amplitude 1-4 mm, duration 47-57 s.
3 Emission events, amplitude 5-7 mm, duration 50-62 s.
1 Harmonik event, amplitude 4 mm, duration 119 s.
1 Distant tectonic event, amplitude 5 mm, S-P 20 s, duration 41 s.

Observation photo

Latest observation photo.

Location: Lumajang, Malang, Jawa Timur
Nearest city: Malang, Lumajang, Probolinggo, Pasuruan
Elevation: 3.676 m a.s.l.
Coordinates: -8.1080000, 112.9200000

Eruptions in the last 30 days (12 terakhir)

24 Oct 2026, 07:34 WITAAsh column ± 1.000 m above the summit, duration 124 s
24 Oct 2026, 04:18 WITAAsh column ± 700 m above the summit, duration 137 s
23 Oct 2026, 18:10 WITAAsh column not observed
23 Oct 2026, 09:20 WITAAsh column ± 1.000 m above the summit, duration 85 s
23 Oct 2026, 07:20 WITAAsh column ± 1.000 m above the summit, duration 93 s
23 Oct 2026, 06:53 WITAAsh column ± 1.200 m above the summit, duration 130 s
23 Oct 2026, 06:20 WITAAsh column ± 600 m above the summit, duration 127 s
23 Oct 2026, 06:17 WITAAsh column ± 400 m above the summit, duration 122 s
23 Oct 2026, 05:54 WITAAsh column ± 800 m above the summit, duration 128 s
22 Oct 2026, 21:08 WITAAsh column ± 800 m above the summit, duration 129 s
22 Oct 2026, 20:52 WITAAsh column ± 800 m above the summit, duration 132 s
22 Oct 2026, 20:25 WITAAsh column ± 700 m above the summit, duration 137 s

VONA – Aviation Notice

Volcano Observatory Notice for Aviation issued by PVMBG for airlines: the colour code shows the volcanic-ash hazard to aircraft. Last 30 days.

ORANGE
25 Oct 2026, 01:05 WITA · 2026SMR2012
Abu vulkanik tidak teramati, durasi 115 detik.

VONA text
Eruption at 1705 UTC (0005 local). Ash-cloud is not observed.
ORANGE
24 Oct 2026, 22:59 WITA · 2026SMR2011
Abu vulkanik tidak teramati, durasi 160 detik.

VONA text
Eruption at 1459 UTC (2159 local). Ash-cloud is not observed.
ORANGE
24 Oct 2026, 20:23 WITA · 2026SMR2010
Abu vulkanik tidak teramati, durasi 125 detik.

VONA text
Eruption at 1223 UTC (1923 local). Ash-cloud is not observed.
ORANGE
24 Oct 2026, 07:34 WITA · 2026SMR2009
Volcanic ash ±1.000 m above the summit, duration 124 seconds..

VONA text
Eruption with volcanic ash cloud at 2334 UTC (0634 local). Best estimate of ash-cloud top is around 14963 FT (4676 M) above sea level or 3200 FT (1000 M) above summit. May be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud moving to southeast.
ORANGE
24 Oct 2026, 04:18 WITA · 2026SMR2008
Volcanic ash ±700 m above the summit, duration 137 seconds..

VONA text
Eruption with volcanic ash cloud at 2018 UTC (0318 local). Best estimate of ash-cloud top is around 14003 FT (4376 M) above sea level or 2240 FT (700 M) above summit. May be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud moving to southeast.
ORANGE
24 Oct 2026, 01:27 WITA · 2026SMR2007
Abu vulkanik tidak teramati, durasi 143 detik.

VONA text
Eruption at 1727 UTC (0027 local). Ash-cloud is not observed.

Observation-post CCTV

Snapshots are updated about every 15 minutes. The capture time is shown in the top-left corner.

Live seismograms

Seismograph (helicorder) records from the last 24 hours at 2 PVMBG stations on Mount Semeru, updated about every 15 minutes. One line = 30 minutes; the bottom line is the latest. Times on the image are UTC (WIB = UTC+7, WITA = UTC+8, WIT = UTC+9). Click an image for full size.

Seismogram stasiun KMRA EHZ, Gunung Semeru — Station **KMRA** · EHZ

Seismogram stasiun TWSG HHZ, Gunung Semeru — Station **TWSG** · HHZ

Source: PVMBG – MAGMA Indonesia. Volcanic earthquakes appear as spikes on the trace; continuous shaking may indicate tremor.

14-day seismicity chart

Volcanic earthquakes per day by type.

View data table

Date	Explosion/eruption	Rockfall	Emission	Deep volcanic	Local tectonic	Distant tectonic
25 Oct	0	0	0	0	0	0
24 Oct	132	28	27	1	1	7
23 Oct	166	19	32	2	0	8
22 Oct	130	13	15	0	0	4
21 Oct	39	5	53	0	0	5
20 Oct	66	15	79	0	0	25
19 Oct	130	34	71	0	0	1
18 Oct	0	0	0	0	0	0
17 Oct	0	0	0	0	0	0
16 Oct	0	0	0	0	0	0
15 Oct	0	0	0	0	0	0
14 Oct	0	0	0	0	0	0
13 Oct	0	0	0	0	0	0
12 Oct	0	0	0	0	0	0

Satellite imagery

Daily image date: Choose a layer in the top-right corner of the map. Daily images may be cloudy.

Previous reports

6-hour report, 2026-10-24, 12:00-18:00 WIB

Visual: The volcano is covered by fog 0-III. Crater smoke not observed.

19 Explosion/eruption events, amplitude 10-24 mm, duration 70-117 s.
1 Rockfall event, amplitude 2 mm, duration 45 s.
2 Emission events, amplitude 4-5 mm, duration 41-51 s.
1 Distant tectonic event, amplitude 8 mm, S-P 16 s, duration 39 s.

6-hour report, 2026-10-24, 06:00-12:00 WIB

Visual: The volcano is clearly visible to covered by fog 0-III. No crater smoke.

19 Explosion/eruption events, amplitude 13-25 mm, duration 56-173 s.
4 Rockfall events, amplitude 3-4 mm, duration 53-198 s.
6 Emission events, amplitude 3-8 mm, duration 49-177 s.

24-hour report, 2026-10-24, 00:00-24:00 WIB

Visual: The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.

76 Explosion/eruption events, amplitude 10-25 mm, duration 56-183 s.
19 Rockfall events, amplitude 1-8 mm, duration 36-198 s.
16 Emission events, amplitude 3-8 mm, duration 41-177 s.
2 Harmonik events, amplitude 2-4 mm, duration 119-169 s.
1 Deep volcanic event, amplitude 20 mm, S-P 3 s, duration 26 s.
1 Local tectonic event, amplitude 2 mm, S-P 10 s, duration 28 s.
5 Distant tectonic events, amplitude 1-8 mm, S-P 12-29 s, duration 35-56 s.

6-hour report, 2026-10-24, 00:00-06:00 WIB

Visual: The volcano is clearly visible to covered by fog 0-III. No crater smoke.

20 Explosion/eruption events, amplitude 12-25 mm, duration 66-179 s.
10 Rockfall events, amplitude 1-8 mm, duration 36-132 s.
5 Emission events, amplitude 3-8 mm, duration 41-103 s.
1 Harmonik event, amplitude 2 mm, duration 169 s.
1 Deep volcanic event, amplitude 20 mm, S-P 3 s, duration 26 s.
1 Local tectonic event, amplitude 2 mm, S-P 10 s, duration 28 s.
3 Distant tectonic events, amplitude 1-4 mm, S-P 12-29 s, duration 35-56 s.

6-hour report, 2026-10-23, 18:00-24:00 WIB

Visual: The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.

23 Explosion/eruption events, amplitude 12-24 mm, duration 65-179 s.
2 Rockfall events, amplitude 2-4 mm, duration 45-49 s.
6 Emission events, amplitude 2-7 mm, duration 35-60 s.
1 Harmonik event, amplitude 4 mm, duration 224 s.
1 Distant tectonic event, amplitude 17 mm, S-P 23 s, duration 67 s.

6-hour report, 2026-10-23, 12:00-18:00 WIB

Visual: The volcano is covered by fog 0-II to covered by fog 0-III. Crater smoke not observed.

24 Explosion/eruption events, amplitude 10-24 mm, duration 57-168 s.
3 Rockfall events, amplitude 3-6 mm, duration 58-83 s.
3 Emission events, amplitude 5-7 mm, duration 40-49 s.
1 Harmonik event, amplitude 6 mm, duration 219 s.
1 Distant tectonic event, amplitude 8 mm, S-P 14 s, duration 29 s.

6-hour report, 2026-10-23, 06:00-12:00 WIB

Visual: The volcano is clearly visible to covered by fog 0-II. No crater smoke.

24 Explosion/eruption events, amplitude 12-25 mm, duration 55-137 s.
3 Rockfall events, amplitude 3-6 mm, duration 23-76 s.
7 Emission events, amplitude 3-9 mm, duration 20-70 s.
1 Deep volcanic event, amplitude 11 mm, S-P 3 s, duration 10 s.
2 Distant tectonic events, amplitude 14-30 mm, S-P 18-31 s, duration 61-66 s.

Level history

No level changes recorded since monitoring began.