BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Thursday 15 January 2026 At 1200 UTC
Part I : Warning
TC NOKAEN AT 9.9°N 128.9°E 1000HPA MAXIMUM WINDS 35 KT MOVING TO NW LOW PRESSURE AREA 96S AT 15.0°S 113.4°E 1002HPA MAXIMUM WINDS 20 KT MOVING TO SW
Part II : General Synopsis
Thursday 15 January 2026 at 00 UTC NORTHWESTERLY TO NORTHEASTERLY MODERATE TO STRONG FLOW IN THE NORTHERN PART OF INDONESIA WESTERLY TO NORTHWESTERLY MODERATE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Friday 16 January 2026 at 12 UTC
MALACCA STRAIT
Northwesterly
4-7 kt
Smooth Sea
INDIAN OCEAN WESTERN OF ACEH
Northwesterly
0-10 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Westerly
10-17 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Westerly
10-18 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Northwesterly
9-23 kt
Moderate Sea
NORTH NATUNA SEA
Northeasterly
12-17 kt
Moderate Sea
KARIMATA STRAIT
Northerly
10-15 kt
Slight Sea
JAVA SEA
Westerly
12-23 kt
Moderate Sea
MAKASSAR STRAIT
Westerly
8-24 kt
Moderate Sea
BALI SEA
Westerly
4-22 kt
Moderate Sea
SUMBAWA SEA
Westerly
17-25 kt
Moderate Sea
FLORES SEA
Westerly
17-25 kt
Moderate Sea
BANDA SEA
Westerly
1-26 kt
Moderate Sea
CERAM SEA
Westerly
4-14 kt
Slight Sea
SULAWESI SEA
Westerly
14-21 kt
Moderate Sea
MOLLUCA SEA
Westerly
2-20 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Westerly
2-14 kt
Moderate Sea
ARAFURA SEA
Westerly
15-24 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
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