BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Friday 18 April 2025 At 1430 UTC
Part I : Warning
TROPICAL CYCLONE ERROL AT 15.6°S 123.3°E 993 HPA MAXIMUM WINDS 35 KNOTS MOVE TO EAST TROPICAL LOW 97S AT 11.1°S 138.9°E 1000 HPA MAXIMUM WINDS 35 KNOTS MOVE TO SSE
Part II : General Synopsis
Friday 18 April 2025 at 00 UTC NORTHWESTERLY TO NORTHEASTERLY GENTLE TO MODERATE FLOW IN THE NORTHERN PART OF INDONESIA SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Saturday 19 April 2025 at 15 UTC
MALACCA STRAIT
Westerly
7-26 kt
Moderate Sea
INDIAN OCEAN WESTERN OF ACEH
Westerly
1-25 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Northwesterly
4-23 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF JAVA
Northeasterly
3-20 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF BALI
Westerly
1-20 kt
Rough Sea
NORTH NATUNA SEA
Northeasterly
2-11 kt
Slight Sea
KARIMATA STRAIT
Northerly
0-18 kt
Slight Sea
JAVA SEA
Westerly
1-16 kt
Slight Sea
MAKASSAR STRAIT
Northwesterly
1-24 kt
Moderate Sea
BALI SEA
Northwesterly
5-14 kt
Slight Sea
SUMBAWA SEA
Westerly
4-16 kt
Slight Sea
FLORES SEA
Westerly
4-31 kt
Moderate Sea
BANDA SEA
Westerly
3-34 kt
Moderate Sea
CERAM SEA
Northwesterly
0-20 kt
Slight Sea
SULAWESI SEA
Northeasterly
0-25 kt
Moderate Sea
MOLLUCA SEA
Northerly
0-28 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Easterly
3-20 kt
Moderate Sea
ARAFURA SEA
Westerly
3-23 kt
Slight 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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