WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
11th OF SEPTEMBER 2026 AT 13:30 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 112200 TO 122200 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. ST HELENA: Cyclonic 35 in the south-east at first.
2. TRADES (15S/30S, 00E/WEST COAST): S to SE 35 in the extreme
south-west at first.
SYNOPTIC CHART 12:00Z
=====================
High 1034 hPa 34s14w, High 1025 hPa 29s58e,
Low 1007 hPa 40s47e, Low 963 hPa 64s33e
1. Cold Front: 39s16e 50s43e 60s45e 64s39e into 64s33e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SW 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the north-east, otherwise SE to
E 15 to 25 but cyclonic 20 to 30 in the south-east reaching
35 in places at first.
VIS : Good but moderate to poor in showers and thundershowers in
the south-east.
SEA STATE: 3.0 to 3.5m, except in the north, reaching 4.0 to 5.0m in the
south-east, with SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 20 to 30 in the south reaching 35 over the extreme
south-west at first, becoming variable 05 to 10 in the south-
west during the second half of the period, otherwise variable
05 to 10.
VIS : Good but moderate in showers and thundershowers in the south.
SEA STATE: 3.5 to 4.0m in the south, with SE to S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15, but S to SE 20 to 30 in the north-east
and NW 15 to 25 in the south-west.
VIS : Good but moderate in showers and thundershowers in the north-
east at first but moderate in showers in the south-west
from the second half of the period.
SEA STATE: 3.0 to 4.0m in the north-east reaching 4.5m at first
becoming 3.5 in the south-west towards the end of the period,
with S to SW swell but SE swell in the north-east.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 10 to 15 in the south-west, otherwise S to SE 10
to 20 reaching 25 to 30 in the north.
VIS : Good but moderate in showers and thundershowers in the north.
SEA STATE: 3.0 but 3.5 to 4.5m in the north-east from second half of the
period, with SW swell but SE swell in the north.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Cyclonic 15 to 25 in the east otherwise anticyclonic 10 to 15
reaching 15 to 25 in the north-west towards the second
half of the period.
VIS : Moderate to poor in showers and thundershowers in the south-
east during the first half of the period, becoming moderate
in showers in the north-west in the second half of the period,
otherwise good.
SEA STATE: 3.0 to 3.5 reaching 4.0 to 5.0m in the south-east in the first
half of the period, becoming 3.0 to 4.0 in the west towards
the end of the period with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S 05 to 15 but N to NE 10 to 20 in the east becoming SW 15 to
25 in the east and NE 10 to 15 in the north-west in the second
half of the period.
VIS : Good but moderate in rain and showers in the south-east.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 in the north reaching 30 in the extreme
north-west otherwise NE 10 to 20.
VIS : Good but moderate in showers and rain in the north.
SEA STATE: 3.0 in the north in the first with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 20 to 30 reaching 35 in the south but S to SE 20 to 25
in the extreme north-east at first.
VIS : Moderate in showers and thundershowers in the south.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 6.5m in the south-west with W to
SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/11 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Gale continuing or expected over WAM, CRO and KER.
PART 2: GENERAL SYNOPSIS, 26/09/11 AT 0000UTC
- Low 963 near 57S/72E with associated cold front over north of KER, moving eastwards.- Shallow low 1015 near 38S/36E with waving front along 54N between 34E and 65E, moving eastwards and deepening. Expected 999 near 40S/54E the 12 at 00 UTC.- High 1029 near 29S/57E, slowly moving east-northeastwards.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/11 at 0600UTC to 26/09/12 at 0600UTC
WAM (30S/40S, 50E/65E)
Frontal rain or showers. Scattered showers in north.WIND: - In far north: Anticlockwise 3 or 4.- Elsewhere: West 5 or 6, becoming Clockwise 7 or 8 later. Gusts.
SEA: moderate or rough, locally very rough in south. SW swell 4 or 5 m in
far south.
VISIBILITY: poor in preciptation.
AMS (30S/40S, 65E/80E)
Frontal rain or showers. Scattered showers in north.WIND: Westerly 5 or 6, at times 7, decreasing 4 or 5 later, increasing Northwest 5 or 6 from
west at end.
SEA: rough or very rough. SW swell 4 or 5 m.
VISIBILITY: poor in preciptation.
CRO (40S/50S, 50E/65E)
Frontal rain or showers.WIND: Southwest 6 or 7, decreasing soon 4 or 5, increasing Clockwise 7 or 8 in far north later and veerinf Westerly 5 or 6 elsewhere. Gusts.
SEA: very rough or high, decreasing rough or very rough at end SW swell 5 or 6 m, abating 4 or 5 m later.
VISIBILITY: poor in preciptation.
KER (40S/50S, 65E/80E)
Frontal rain or showers.WIND: Southwesterly 7 or 8, decreasing soon 5 or 6 in west. Severe gusts.
SEA: very rough or high. SW swell 5 m from west soon.
VISIBILITY: poor in precipitation.=