Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Tuesday 25 March 2025 At 1430 UTC
Part I : Warning
GALE WARNING 16.7 S 110.1 E 993HPA MOVE TO SOUTHWEST MAXIMUM WINDS 40 KNOTS. GALE WARNING 15.7 S 120.5 E 1009HPA MOVE TO SOUTHEAST MAXIMUM WINDS 15 KNOTS. GALE WARNING 6.9 N 129.9 E 1007HPA MOVE TO NORTHWEST MAXIMUM WINDS 15 KNOTS.
Part II : General Synopsis
Tuesday 25 March 2025 at 00 UTC NORTHWESTERLY TO NORTHEASTERLY LIGHT TO FRESH FLOW IN THE NORTHERN PART OF INDONESIA WESTERLY TO NORTHWESTERLY LIGHT TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Wednesday 26 March 2025 at 15 UTC
MALACCA STRAIT
INDIAN OCEAN WESTERN OF ACEH
INDIAN OCEAN WESTERN OF LAMPUNG
INDIAN OCEAN SOUTHERN OF JAVA
INDIAN OCEAN SOUTHERN OF BALI
NORTH NATUNA SEA
KARIMATA STRAIT
JAVA SEA
MAKASSAR STRAIT
BALI SEA
SUMBAWA SEA
FLORES SEA
BANDA SEA
CERAM SEA
SULAWESI SEA
MOLLUCA SEA
WESTERN PART OF PACIFIC OCEAN
ARAFURA 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