Mount Arjuno Welirang
Jawa Timur · 3.339 m a.s.l.
Recommendations
2) Masyarakat dan pengunjung/wisatawan tidak berlama-lama di Kawah G. Welirang serta di lokasi tembusan gas untuk mewaspadai potensi gas beracun.
Latest report
24-hour report, 2026-10-23, 00:00-24:00 WIB · Anggi Nuryo Saputro, A.Md.
Visual observation
The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.
Climatology
Weather clear to overcast, weak wind to moderate towards west. Air temperature about 23-34°C.
Seismicity
- 4 Distant tectonic events, amplitude 2-20 mm, S-P 29-39 s, duration 63-86 s.
Observation photo
Latest observation photo.
- Location
- Malang, Mojokerto, Pasuruan, Jawa Timur
- Nearest city
- Tretes
- Elevation
- 3.339 m a.s.l.
- Coordinates
- -7.7250000, 112.5800000
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 4 PVMBG stations on Mount Arjuno Welirang, 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.
Source: PVMBG – MAGMA Indonesia. Volcanic earthquakes appear as spikes on the trace; continuous shaking may indicate tremor.
Volcanic hazard map (KRB)
Official Geological Agency map (2009): areas that may be hit by pyroclastic flows, lava flows, ballistic rocks, ashfall, and lahars. KRB III is closest to the source.
14-day seismicity chart
Volcanic earthquakes per day by type.
View data table
| Date | Deep volcanic | Distant tectonic | More |
|---|---|---|---|
| 25 Oct | 0 | 0 | 0 |
| 24 Oct | 0 | 0 | 0 |
| 23 Oct | 0 | 4 | 0 |
| 22 Oct | 1 | 2 | 0 |
| 21 Oct | 1 | 2 | 1 |
| 20 Oct | 0 | 1 | 0 |
| 19 Oct | 0 | 0 | 0 |
| 18 Oct | 0 | 2 | 0 |
| 17 Oct | 0 | 0 | 0 |
| 16 Oct | 0 | 0 | 0 |
| 15 Oct | 0 | 0 | 0 |
| 14 Oct | 0 | 0 | 0 |
| 13 Oct | 0 | 0 | 0 |
| 12 Oct | 0 | 0 | 0 |
Satellite imagery
Previous reports
24-hour report, 2026-10-22, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.
- 1 Deep volcanic event, amplitude 2 mm, S-P 1 s, duration 8 s.
- 2 Distant tectonic events, amplitude 7-23 mm, S-P 20 s, duration 54-73 s.
24-hour report, 2026-10-21, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.
- 1 Low frequency event, amplitude 3.4 mm, duration 24 s.
- 1 Deep volcanic event, amplitude 2.8 mm, S-P 2 s, duration 14 s.
- 2 Distant tectonic events, amplitude 1.9-18 mm, S-P 10-25.7 s, duration 52-115 s.
24-hour report, 2026-10-20, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-I. Crater smoke not observed.
- 1 Distant tectonic event, amplitude 2.5 mm, S-P 20.2 s, duration 174.6 s.
24-hour report, 2026-10-19, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.
- Kegempaan nihil.
24-hour report, 2026-10-18, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-I. Crater smoke not observed.
- 2 Distant tectonic events, amplitude 5.8-7 mm, S-P 13-16.5 s, duration 60-200 s.
Level history
No level changes recorded since monitoring began.