BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Friday 10 April 2026 At 0000 UTC
Part I : Warning
NIL
Part II : General Synopsis
Thursday 09 April 2026 at 12 UTC NORTHWEST TO NORTHEASTERLY LIGHT TO MODERATE FLOW IN THE NORTHERN PART OF INDONESIA SOUTHEAST TO SOUTHWESTERLY LIGHT TO MODERATE FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Saturday 11 April 2026 at 00 UTC
MALACCA STRAIT
Northwesterly
8-11 kt
Slight Sea
INDIAN OCEAN WESTERN OF ACEH
Northwesterly
1-10 kt
Slight Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Westerly
7-16 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Westerly
4-15 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
7-12 kt
Slight Sea
NORTH NATUNA SEA
Easterly
5-9 kt
Smooth Sea
KARIMATA STRAIT
Northerly
0-9 kt
Smooth Sea
JAVA SEA
Northerly
0-10 kt
Smooth Sea
MAKASSAR STRAIT
Northerly
1-8 kt
Smooth Sea
BALI SEA
Easterly
3-9 kt
Slight Sea
SUMBAWA SEA
Easterly
1-8 kt
Slight Sea
FLORES SEA
Northerly
1-8 kt
Smooth Sea
BANDA SEA
Northwesterly
0-16 kt
Slight Sea
CERAM SEA
Westerly
4-16 kt
Slight Sea
SULAWESI SEA
Northeasterly
1-12 kt
Slight Sea
MOLLUCA SEA
Northwesterly
1-10 kt
Slight Sea
WESTERN PART OF PACIFIC OCEAN
Northwesterly
8-21 kt
Moderate Sea
ARAFURA SEA
Easterly
1-12 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
TAUTAN :
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