WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
28TH OF JUNE 2026 AT 08:30 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 281000 TO 291000 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:
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1. CAPE EAST: NW 35 in the south-west at first.
2. MARION FORTIES EAST: N to NW reaching 35 in places.
SYNOPTIC CHART 06:00Z
=====================
High 1032 hPa 38s15w, High 1040 hPa 41s66e
Low 1020 hPa 39s28w
1. Cold Front: 26s00e 33s15e 41s25e into 44s20e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 15 to 25.
VIS : Good, but moderate in showers and rain in places.
SEA STATE: 2.5 to 3.0m with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but S to SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the central south.
SEA STATE: 2.5 to 3.0m but 3.5 in the south at first with S to SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 4.0m in the south, with SW swell, but SE swell in the
north.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15, but cyclonic 25 to 35 in the
extreme south-west drifting eastwards toward the end of the
period.
VIS : Good, but moderate in showers and rain in the east at first and in
the south-west drifting eastwards by the end of the period.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 5.5m in the east during the first half
of the period, with W to SW swell, becoming NW swell in the south-
west reaching 5.5 to 6.0m by the end of the period.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 15 to 25 reaching 30 in places at first becoming variable
05 to 15 in the west towards the end of the period.
VIS : Moderate in showers and thundershowers, clearing in the west
during the second half of the period.
SEA STATE: 3.0 to 3.5m in the north-east at first, otherwise 4.0 to 5.0,
reaching 6.0 to 6.5m in the south-east at first, with W to SW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 15 to 25, but W to NW 25 to 35 in the south-west at first,
drifting to the central towards the end of period. It will become
SW 20 to 25 in the south-west towards the mid-period spreading to
the west by end of period.
VIS : Good, but moderate in showers and rain in the south-west,
spreading to the west by mid-period.
SEA STATE: 3.0 to 4.0m, but 5.0 to 6.0m in the south-west reaching 6.5 at
first, with W to SW swell, but NW swell in places in the central
parts.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE to E 10 to 20 reaching 25 in the south-west at first.
VIS : Good in the south-west, otherwise moderate in showers and rain in
places.
SEA STATE: 3.0 to 3.5m, except in the north-west, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : NE 05 to 15 in the south-west, otherwise S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the north from
the second half of the period.
SEA STATE: 2.0 to 2.5m in the extreme south-east at first, with SE
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 reaching 30 in the north-east.
VIS : Good, but moderate in showers and rain in places.
SEA STATE: 3.0m in the north-west and south, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 in places becoming SW 10 to 20 in the
extreme south-west by the end of the period.
VIS : Good, but moderate in showers and rain in south-west spreading to
the south and west towards the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-west towards the
mid-period, spreading to the south and west by the end of the
period with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/28 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Nil.
PART 2: GENERAL SYNOPSIS, 26/06/28 AT 0000UTC
- Building high 1039 near 40S/61E steadily moving eastward.
- Warm front over far south-western CRO at end.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/28 at 0600UTC to 26/06/29 at 0600UTC
WAM (30S/40S, 50E/65E)
Scattered showers over northern.
WIND:
Northern half: E 5/6 with gust, at times 4.
Southern half: anticlockwise 3/4 at times 5, increasing N 5/6 with gusts over far south-western at end.
SEA: moderate to rough. SW swell around 3m abating
VISIBILITY: mainly good.
AMS (30S/40S, 65E/80E)
Scattered showers over northern, locally squalls over far northern.
WIND:
Northern half: E 5/6 increasing 6/7 later. Gusts.
Southern half: anticlockwise 3/4 at times 5.
SEA: rough, locally very rough and crossed over far northern later. SW swell
around 3m.
VISIBILITY: poor in precipitation.
CRO (40S/50S, 50E/65E)
Showers over western more scattered elsewhere, then frontal rain and showers over far south-western at end.
WIND: NW 5/6 increasing 6/7 with gusts, but anticlockwise 3/4 over far north-
eastern.
SEA: rough to very rough, locally moderate over far northern. SW swell around
3m abating.
VISIBILITY: poor in precipitation.
KER (40S/50S, 65E/80E)
Few showers becoming scattered over southern at end.
WIND:
Northern half: anticlockwise 3/4 at times 5.
Southern half: W 5/6 increasing 6/7 later. Gusts.
SEA: rough to very rough from north to south. SW swell 3 to 4m abating.
VISIBILITY: mainly good.