Mount Slamet
Jawa Tengah · 3.428 m a.s.l.
Recommendations
Latest report
24-hour report, 2026-10-23, 00:00-24:00 WIB · Albertus Galih Prasida Kastawa, A.Md.
Visual observation
The volcano is clearly visible to covered by fog 0-III. Crater smoke not observed.
Climatology
Weather clear to rain, weak wind to strong towards east and south. Air temperature about 21.5-29°C. Humidity 51-78%.
Seismicity
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
Observation photo
Latest observation photo.
- Location
- Pemalang, Banyumas, Brebes, Tegal, Purbalingga, Jawa Tengah
- Nearest city
- Bumiayu, Purwokerto, Purbalingga
- Elevation
- 3.428 m a.s.l.
- Coordinates
- -7.2420000, 109.2080000
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 3 PVMBG stations on Mount Slamet, 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 (2006): 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 | 0 | 1 |
| 22 Oct | 0 | 2 | 1 |
| 21 Oct | 0 | 1 | 1 |
| 20 Oct | 1 | 0 | 1 |
| 19 Oct | 0 | 0 | 1 |
| 18 Oct | 0 | 0 | 1 |
| 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-II. Main crater smoke observed: white with thin to thick intensity, rising about 50 meter dari puncak.
- 2 Distant tectonic events, amplitude 2.5 mm, S-P 30.4 s, duration 108-164 s.
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
24-hour report, 2026-10-21, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-I. No crater smoke.
- 1 Distant tectonic event, amplitude 2.5 mm, S-P 20.6 s, duration 114 s.
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
24-hour report, 2026-10-20, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-II. Main crater smoke observed: white with thin intensity, rising about 50 meter dari puncak.
- 1 Deep volcanic event, amplitude 4 mm, S-P 2.6 s, duration 9 s.
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
24-hour report, 2026-10-19, 00:00-24:00 WIB
Visual: The volcano is clearly visible to covered by fog 0-I. No crater smoke.
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
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.
- 1 kali gempa Tremor Menerus dengan amplitudo 0.5 mm, dominan 0.5 mm.
Level history
No level changes recorded since monitoring began.