Marine Weather for HS 016

Forecast
weather bulletin for the high seas for Metarea VII, west of 20e. Issued by the South African Weather Service on the 28th August 2014 at 08:30 UTC.

Note: wx observations. ====================== Could all vessels experiencing unexpected, severe wx/sea state please make every effort to report this to saws via cape town radio.

Area 1: ====== forecast valid from 281000 to 291000 utc:

Wind in knots, wave heights in metres. No sea state given if waves less than 3m.

Gale warnings: ============== 1. Trades: se to E 35 in the extreme east and south-east. 2. Tristan: NW 35 in places. 3. Cape west: SW 35 in places in the east by the first half of the period.

Synoptic situation at 06:00z: ============================= high 1030 hpa 31s05w high 1026 hpa 42s60e. Low 992 hpa 45s25e low 1006 hpa 34s31e low 974 hpa 56s32e.

1. Cold front: 30s14e 35s20e 40s24e into 45s25e. 2. Cold front: 35s30e 40s33e 45s35e 50s36e into 56s32e. 3. Cold front: 25s33w 30s31w 35s29w into 44s35w into 52s18w into 65s08w.

Area forecast: ============== Ascension (06s/15s, 00e/20w) wind : se to E 10 to 20. Vis : good. Sea state: 2.5 to 3m, with SW swell.

Angola (06s/s15s, 00e/west coast) wind : SW 05 to 15 in the extreme east and North-East, otherwise S to se 10 to 20. Vis : good but moderate in showers and fog patches in the extreme east and North-East. Sea state: 2.5 to 3.5m, with SW swell.

St Helena (15s/30s, 00e/20w) wind : NE to N 15 to 25 in the extreme south, otherwise se to E 15 to 20 but NW 25 in the extreme South-West. Vis : good. Sea state: 2.5 to 3m, with SW swell.

Trades (15s/30s, 00e/west coast) wind : SW 15 to 20 in the extreme east and south-east at times, otherwise se to E 20 to 30, reaching 35 in the extreme east and south-east. Vis : good becoming moderate in showers in the extreme east and south-east at times. Sea state: 3 to 4.5m, with long period SW swell.

Tristan (30s/40s, 00e/20w) wind : NE to N 10 to 20 in the North-East, otherwise NW 20 to 30, reaching 35 in places. Vis : good in the North-East but moderate to poor in showers and rain. Sea state: 3 to 4m, reaching 4.5m in places, with W to SW swell.

Cape west (30s/40s, 00e/20e) wind : SW 20 to 30, reaching 35 in places in the east by the first half of the period, otherwise S to se 20 to 25 but variable 05 in the South-West. It will become NE to NW 15 to 25 in the west by the second half of the period. Vis : good but moderate to poor in rain and showers by the first half of the period. Sea state: 4 to 5m, reaching 5.5 to 8m in places in the east, with W to SW swell.

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