WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
28TH OF JUNE 2026 AT 17:00 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
NOTE: WX OBSERVATIONS.
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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 282200 TO 292200 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. TRISTAN (30S/40S, 00E/20W): SW 35 in the extreme south-west.
SYNOPTIC CHART 12:00Z
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High 1034 hPa 35s15w, High 1041 hPa 41s67e
Low 1018 hPa 41s23w
1. Cold Front: 29s14e 36s21e 43s28e into 44s25e.
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 becoming variable 10 in the south from second
half of the period .
VIS : Good, but moderate in showers and rain in the central and 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 to the east towards the end of the
period.
VIS : Good, but moderate in showers and rain in the south-west drifting
to the north-west and south-east during the second half of the
period.
SEA STATE: 3.5 to 4.0m with SW swell, but NW swell in the south-
west drifting eastwards reaching 5.0 to 6.0m towards the second
half of the period.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 15 to 25 becoming variable 05 to 10 towards the second
half of the period.
VIS : Moderate in showers and rain, clearing in the west
during the second half of the period.
SEA STATE: 4.0 to 5.0 becoming 3.0 in the west towards the end of the period
with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 20 to 30, but W to SW 20 to 25 in the south-
west, drifting to the west towards the end of period.
VIS : Good, but moderate in showers and rain in the south-west,
drifting to central and south towards the second half of the
period.
SEA STATE: 4.0 to 5.0m, reaching 5.5 to 6.0m in the south-west at first,
spreading to the west during the second half of the period, with
SW swell, but NW swell in places in the central parts.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to NE 10 to 20 becoming SW 15 to 25 in the south-west towards
the end of the period.
VIS : Good, but moderate in showers and rain in the east. It
will become moderate in showers and rain in the south-west by the
end of the period.
SEA STATE: 3.0 to 3.5m, except in the north-west, with S to SE swell
becoming 4.5 to 5.0m in the extreme south-west towards the end of
the period with SW swell.
MOZAMBIQUE CHANNEL:
WIND : NE 05 to 10 but S to SE 10 to 20 in the north.
VIS : Good.
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, becoming SW 20 to 30 in
the south-west towards mid-period spreading to the south and west
during the second half of the period.
VIS : Good, but moderate in showers and rain in west spreading to
the south and east during the second half of the period.
SEA STATE: 3.0m in the north-east otherwise 4.5 to 5.5 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 1700UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Gale expected over CRO.
PART 2: GENERAL SYNOPSIS, 26/06/28 AT 1200UTC
- Fresh or strong Northwesterly disturbed flow over far southern areas.
- Squally area in far north of AMS with associated fresh or strong East flow.
- Elsewhere, high 1041 near 41S/67E, slowly moving eastwards.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/28 at 1800UTC to 26/06/29 at 1800UTC
WAM (30S/40S, 50E/65E)
Scattered showers.
WIND: Northeasterly 4 or 5, at times 6. Gusts.
SEA : moderate or rough, becoming soon locally very rough in far northeast
VIS : poor in precipitation.
AMS (30S/40S, 65E/80E)
Scattered showers, but squalls in far north.
WIND: East 5 or 6 with gusts, at times 7, but Anticlockwise 3 or 4 in south.
SEA : rough, locally very rough and crossed in north. SW swell 3 m.
VIS : poor in precipitation.
CRO (40S/50S, 50E/65E)
Frontal rain in southwest. Scattered showers elsewhere.
WIND: Northwest 6 or 7, increasing soon 7 or 8 in southwest. Severe gusts.
SEA : rough or very rough, becoming later locally high in southwest. SW swell
3 m in south.
VIS : poor in precipitation.
KER (40S/50S, 65E/80E)
Scattered rain or showers, becoming frequent at end in west.
WIND: West or Northwest increasing 6 or 7 with severe gusts, but
Anticlockwise 3 or 4 in north.
SEA : moderate or rough in north, but rough or very rough in south. SW swell
3 or 4 m.
VIS : poor in precipitation.