BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Thursday 15 May 2025 At 0600 UTC
Part I : Warning
NIL
Part II : General Synopsis
Wednesday 14 May 2025 at 12 UTC SOUTHEASTERLY TO SOUTHWESTERLY LIGHT TO GENTLE FLOW IN THE NORTHERN PART OF INDONESIA EASTERLY TO SOUTHEASTERLY GENTLE TO FRESH FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Friday 16 May 2025 at 06 UTC
MALACCA STRAIT
Northwesterly
2-25 kt
Moderate Sea
INDIAN OCEAN WESTERN OF ACEH
Westerly
1-20 kt
Rough Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Northwesterly
0-30 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Northeasterly
0-20 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
12-21 kt
Moderate Sea
NORTH NATUNA SEA
Northeasterly
0-24 kt
Slight Sea
KARIMATA STRAIT
Northwesterly
0-22 kt
Moderate Sea
JAVA SEA
Easterly
1-23 kt
Slight Sea
MAKASSAR STRAIT
Easterly
0-17 kt
Slight Sea
BALI SEA
Easterly
3-13 kt
Slight Sea
SUMBAWA SEA
Easterly
4-13 kt
Slight Sea
FLORES SEA
Easterly
2-18 kt
Slight Sea
BANDA SEA
Southeasterly
0-26 kt
Moderate Sea
CERAM SEA
Northwesterly
0-22 kt
Slight Sea
SULAWESI SEA
Northerly
1-17 kt
Slight Sea
MOLLUCA SEA
Westerly
0-27 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Northwesterly
0-25 kt
Moderate Sea
ARAFURA SEA
Southeasterly
7-23 kt
Moderate 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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