BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Thursday 23 October 2025 At 0600 UTC
Part I : Warning
TC FENGSHEN AT 17.0°N 108.0°E 1006HPA MAXIMUM WIND 30 KNOT MOVE TO SW LOW PRESSURE AREA 97W AT 19.7°N 121.3°E 1006HPA MAXIMUM WIND 30 KNOT MOVE TO SW
Part II : General Synopsis
Wednesday 22 October 2025 at 12 UTC SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO FRESH FLOW IN THE NORTHERN PART OF INDONESIA EASTERLY TO SOUTHEASTERLY GENTLE TO MODERATE LOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Friday 24 October 2025 at 06 UTC
MALACCA STRAIT
Northwesterly
15-19 kt
Moderate Sea
INDIAN OCEAN WESTERN OF ACEH
Northwesterly
5-13 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Northeasterly
1-10 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Southeasterly
3-15 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
6-11 kt
Moderate Sea
NORTH NATUNA SEA
Westerly
2-17 kt
Moderate Sea
KARIMATA STRAIT
Southwesterly
6-17 kt
Moderate Sea
JAVA SEA
Northerly
1-9 kt
Moderate Sea
MAKASSAR STRAIT
Northerly
1-9 kt
Slight Sea
BALI SEA
Easterly
2-10 kt
Slight Sea
SUMBAWA SEA
Northeasterly
0-8 kt
Slight Sea
FLORES SEA
Northeasterly
0-10 kt
Slight Sea
BANDA SEA
Easterly
1-14 kt
Slight Sea
CERAM SEA
Northerly
1-11 kt
Slight Sea
SULAWESI SEA
Westerly
1-12 kt
Moderate Sea
MOLLUCA SEA
Northwesterly
1-10 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Northerly
1-10 kt
Moderate Sea
ARAFURA SEA
Easterly
1-13 kt
Slight 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
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