Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Thursday 05 February 2026 At 0000 UTC
Part I : Warning
TROPICAL CYCLONE PENHA NEAR 8.4°N 130.8°E 1000 HPA MAXIMUM WINDS 30 KT, MOVING TO W TROPICAL LOW 98P NEAR 16.6°S, 128.2°E 1001 HPA MAXIMUM WINDS 15 KT, MOVING TO W
Part II : General Synopsis
Wednesday 04 February 2026 at 12 UTC NORTHWESTERLY TO NORTHEASTERLY GENTLE TO STRONG FLOW IN THE NORTHERN PART OF INDONESIA SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO FRESH FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Friday 06 February 2026 at 00 UTC
MALACCA STRAIT
INDIAN OCEAN WESTERN OF ACEH
INDIAN OCEAN WESTERN OF LAMPUNG
INDIAN OCEAN SOUTHERN OF JAVA
INDIAN OCEAN SOUTHERN OF BALI
NORTH NATUNA SEA
KARIMATA STRAIT
JAVA SEA
MAKASSAR STRAIT
BALI SEA
SUMBAWA SEA
FLORES SEA
BANDA SEA
CERAM SEA
SULAWESI SEA
MOLLUCA SEA
WESTERN PART OF PACIFIC OCEAN
ARAFURA SEA
⚠️ Important Notes
Please be aware, wind gusts can be a further 40 percent stronger than the averages given here, and maximum waves may be up to twice the significant height
Reference Scales
Beaufort Wind Scale
| Force | Description | Speed (knots) |
|---|---|---|
| 0 | Calm | < 1 |
| 1 | Light air | 1-3 |
| 2 | Light breeze | 4-6 |
| 3 | Gentle breeze | 7-10 |
| 4 | Moderate breeze | 11-16 |
| 5 | Fresh breeze | 17-21 |
| 6 | Strong breeze | 22-27 |
| 7 | Near gale | 28-33 |
| 8 | Gale | 34-40 |
| 9 | Strong gale | 41-47 |
Douglas Sea Scale
| Grade | Description | Height (m) |
|---|---|---|
| 0 | Calm (Glassy) | 0 |
| 1 | Calm (Rippled) | 0-0.1 |
| 2 | Smooth | 0.1-0.5 |
| 3 | Slight | 0.5-1.25 |
| 4 | Moderate | 1.25-2.5 |
| 5 | Rough | 2.5-4 |
| 6 | Very rough | 4-6 |
| 7 | High | 6-9 |
| 8 | Very high | 9-14 |
| 9 | Phenomenal | >14 |
KONTAK KAMI :
Jl. Angkasa I No.2 Kemayoran, Jakarta Pusat 10610, PO Box 3540 Jkt.
Call Center (021) 196
Fax (021) 4246703
cc196@bmkg.go.id
TAUTAN :
BULETIN :
