WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
29th OF AUGUST 2026 AT 16:30 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
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:
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FORECAST VALID FROM 292200 TO 302200 UTC:
WIND IN KNOTS, WAVE HEIGHTS IN METERS. NO SEA STATE GIVEN IF WAVES LESS THAN 3M.
NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.
INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5.
WAVE HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS, WHICH MAY BE ACCOMPANIED BY INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.
GALE FORCE WARNINGS:
====================
1. TRISTAN: NW to W 35 in the south-west.
2. CAPE EAST: N to NW 35 in the south-east.
3. DURBAN EAST: SW 35 in the extreme south-west for the first half of the
period.
4. MARION FORTIES EAST: NW 35 to 40 over the central and north-eastern
parts for the first half of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1034 hPa 32s10w High 1040 hPa 35s53e.
Low 1006 hPa 42s24e.
1. Cold front: 34s18e 38s22e 41s25e into 42s24e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 25.
VIS : Good.
SEA STATE: 3.0m, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SW 05 in the extreme east, otherwise S to SE 10 to 15
reaching 20 in the south-west.
VIS : Good.
SEA STATE: 3.0m in the extreme south-west, with S to SW swell.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 15 to 25 but E to NE 10 to 20 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m, except in the south-west, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 reaching 30 in the south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 10 in the north-east, otherwise NW to
W 15 to 25 reaching 30 to 35 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south reaching 4.0 to 5.0m in the south-
west, with W swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : W 15 to 25 in the south, otherwise SE 10 to 20 reaching 25 in
the north-east.
VIS : Good.
SEA STATE: 3.0 to 3.5m reaching 4.0m in the south, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 15 to 25 reaching 30 to 35 in the south-east but W to
SW 15 to 25 in the west spreading to the central parts by mid-
period.
VIS : Good but moderate in showers and thundershowers over the
central parts, spreading to the eastern parts by end of the
period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m over the central and south-eastern
parts, with SW to W swell but N to NE swell over the central
parts.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 15 to 25 reaching 30 over the central and south-
western parts but SW 20 to 30 in the extreme south-west
reaching 35 for the first half of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with E to NE swell, but SW swell in the extreme
south-west.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 over the central and western parts for the first half
of the period, otherwise E to NE 05 to 15 but E to SE 10 to 20 in
the north-east.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 but E to NE 10 to 20 in the south.
VIS : Moderate in showers and rain.
SEA STATE: 3.0 to 4.0m reaching 4.5m in the extreme east and north-east
for the first half of the period, with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW 15 to 25 reaching 30 to 40 over the central and north-
eastern parts for the first half of the period but W to SW 15
to 25 in the west and south spreading north-eastwards in the
second half of the period.
VIS : Good in the north-east, otherwise moderate to poor in showers
and rain.
SEA STATE: 3.5 to 4.5m reaching 5.5 to 6.5m over the central, northern
and eastern parts, with NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/29 AT 1630UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Gale over CRO and KER.
PART 2: GENERAL SYNOPSIS, 26/08/29 AT 1200UTC
- High 1039 hPa near 35S/55E.- Low 956 hPa near 60S/35E with Warm front associated and axis 56S/55E, 57S/53E, 59S/48E, 61S/39E moving Eastward.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/29 at 1800UTC to 26/08/30 at 1800UTC
WAM (30S/40S, 50E/65E)
Scattered showers.
WIND :Anticlockwise 3 to 5 by Western area. Increasing North-
Westerly 5 to 6 over South-Western.
SEA : Rough to very rough becoming moderate to rough. Long SW swell
2 to 4 meters abating.
VIS : Good.
AMS (30S/40S, 65E/80E)
Scattered showers.
WIND : SW 5 to 6 setting-up Anticlockwise 3 to 4 by Western area.
SEA : Rough to very rough. Long SW swell 4 to 5 meters abating.
VIS : Poor in precipitation.
CRO (40S/50S, 50E/65E)
Frontal showers and rain over Southern.
WIND : Westerly to North-West 5 to 6 increasing 6 to 7 locally 8 with
gusts.
SEA : Rough to very rough. Long NW swell 3 to 5 meters.
VIS : Poor in precipitation.
KER (40S/50S, 65E/80E)
Frontal showers and rain over Southern area. Scattered showers elsewhere.
WIND : West to South-West 6 to 7 locally 8 with gusts at the end.
SEA : Rough to very rough. Long Westerly swell, 3 to 5 meters
abating.
VIS : Poor in precipitation.