BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Sunday 13 July 2025 At 0000 UTC
Part I : Warning
LOW PRESSURE AREA 94W AT 11.7°N 140.9°E 1009 HPA MAXIMUM WINDS 15 KNOTS MOVING TO NW
Part II : General Synopsis
Saturday 12 July 2025 at 12 UTC EASTERLY TO SOUTHERLY GENTLE TO FRESH FLOW IN THE NORTHERN PART OF INDONESIA EASTERLY TO SOUTHEASTERLY MODERATE TO GALE FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Monday 14 July 2025 at 00 UTC
MALACCA STRAIT
Northwesterly
2-24 kt
Rough Sea
INDIAN OCEAN WESTERN OF ACEH
Southwesterly
7-21 kt
Rough Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Southeasterly
9-15 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF JAVA
Easterly
11-17 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
12-18 kt
Rough Sea
NORTH NATUNA SEA
Southwesterly
7-17 kt
Slight Sea
KARIMATA STRAIT
Northeasterly
3-15 kt
Slight Sea
JAVA SEA
Easterly
10-20 kt
Moderate Sea
MAKASSAR STRAIT
Easterly
3-20 kt
Moderate Sea
BALI SEA
Easterly
4-17 kt
Moderate Sea
SUMBAWA SEA
Easterly
4-17 kt
Moderate Sea
FLORES SEA
Easterly
5-19 kt
Moderate Sea
BANDA SEA
Southeasterly
2-23 kt
Moderate Sea
CERAM SEA
Easterly
1-16 kt
Moderate Sea
SULAWESI SEA
Northwesterly
1-14 kt
Moderate Sea
MOLLUCA SEA
Northwesterly
4-17 kt
Slight Sea
WESTERN PART OF PACIFIC OCEAN
Northwesterly
4-13 kt
Slight Sea
ARAFURA SEA
Southeasterly
6-24 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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