BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Saturday 21 June 2025 At 0600 UTC
Part I : Warning
NIL
Part II : General Synopsis
Friday 20 June 2025 at 12 UTC SOUTHERLY TO SOUTHWESTERLY LIGHT TO MODERATE FLOW IN THE NORTHERN PART OF INDONESIA SOUTHEASTERLY GENTLE TO MODERATE FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Sunday 22 June 2025 at 06 UTC
MALACCA STRAIT
Northwesterly
7-25 kt
Rough Sea
INDIAN OCEAN WESTERN OF ACEH
Southwesterly
2-18 kt
Rough Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Easterly
1-26 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF JAVA
Southeasterly
7-29 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF BALI
Southeasterly
15-22 kt
Rough Sea
NORTH NATUNA SEA
Southwesterly
1-32 kt
Moderate Sea
KARIMATA STRAIT
Easterly
7-21 kt
Slight Sea
JAVA SEA
Easterly
3-24 kt
Slight Sea
MAKASSAR STRAIT
Southeasterly
6-19 kt
Slight Sea
BALI SEA
Easterly
5-20 kt
Moderate Sea
SUMBAWA SEA
Southeasterly
3-19 kt
Moderate Sea
FLORES SEA
Southeasterly
3-16 kt
Slight Sea
BANDA SEA
Southeasterly
0-30 kt
Moderate Sea
CERAM SEA
Northeasterly
0-24 kt
Moderate Sea
SULAWESI SEA
Westerly
1-23 kt
Moderate Sea
MOLLUCA SEA
Westerly
1-28 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Northwesterly
1-27 kt
Moderate Sea
ARAFURA SEA
Southeasterly
7-27 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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