WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
30th 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 302200 TO 312200 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:
====================
Nil
SYNOPTIC CHART 12:00Z
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High 1033 hPa 31s04w High 1038 hPa 32s63e.
Low 1017 hPa 31s34e.
1. Cold front: 33s34e 40s42e 44s48e into 48s52e.
2. Cold front: 31s36w 34s27w 39s19w 42s12w into 44s14w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 15 to 20 reaching 25 in the south-east at first.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : SE 10 to 20, but S to SW 05 to 15 in the extreme east.
VIS : Good.
SEA STATE: 3.0m in the south, with S to SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the south-east, otherwise E to SE 15
to 20 reaching 25 in north-central and north-eastern parts at
first, but N to NW 05 to 15 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the north, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : SE to S 15 to 25 reaching 30 in the south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m except in the south-west, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the north-east, otherwise NW to
W 20 to 30, but SW to S 05 to 15 in the south-west spreading
to the south-east from mid-period.
VIS : Good but moderate in showers and rain the south clearing from
the south-west by mid-period.
SEA STATE: 3.0 to 4.0m except in the extreme north reaching 4.5 to 5.0m
in places in the south until towards the end of the period,
with NW to W swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the north-west, otherwise NW to W 20
to 30, but SE 10 to 20 in the north-east. It will become SW 05
to 15 in the extreme south-west by the end of the period.
VIS : Good, becoming moderate in showers and rain in the south-west
from mid-period.
SEA STATE: 3.0 to 4.0m except in the north-west reaching 4.5 to 5.0m in
places in the extreme south, with SW to W swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 20 to 30 in the north-east until towards the end of
the period, otherwise variable 05 to 10, but SW to S in the
south-east. It will be W 10 to 20 in the west spreading to the
central parts by mid-period while reaching 25 to 30 in the
south-west.
VIS : Good but moderate to poor in showers and thundershowers in
places in the central and eastern parts.
SEA STATE: 3.0 to 4.0m except in the north, reaching 4.5 to 5.0m in the
extreme south-west by the end of the period, with SW to W
swell but N to NE swell in the south-east.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NW 05 to 15 in the western and central parts, otherwise N to
NE 15 to 25, but SE 05 to 15 in the south-west.
VIS : Good but moderate to poor in showers and thundershowers in the
extreme south-west drifting to places in the south-east
towards mid-period.
SEA STATE: 3.0m in the north-east subsiding towards the end of the
period, with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10, but E to SE 10 to 20 in the north until mid-
period.
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,with SE to E swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SE to S 05 to 15 in the north-east, otherwise NW to N 15 to 25
reaching 30 in places in the south, but SW 10 to 20 in the
south-east at first.
VIS : Good but moderate in showers and rain in the extreme north-
east at first and in the west drifting to the east towards the
end of the period.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in the east until mid-period,
with NW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/30 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE CONTINUING OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/08/30 AT 1200UTC
- WAVING FRONT FROM FAR SOUTHWEST OF WAM TO CRO AND KER. - HIGH 1039
NEAR 32S/63E, STEADILY MOVING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/30 AT 1800UTC TO 26/08/31
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS OVER FAR SOUTHWEST.
WIND: ANTICLOCKWISE 3 OR 4 IN NORTHEAST, INCREASING NORTHWEST 5 OR
6 FROM WEST, AT TIMES 7 IN SOUTH WITH GUSTS.
SEA : MODERATE OR ROUGH, LOCALLY VERY ROUGH AND CROSSED IN FAR SOUTH.
VIS : POOR OR VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE 3 OR 4, BUT WEST 5 OR 6 WITH GUSTS IN FAR SOUTH.
SEA : DECREASING MODERATE OR ROUGH IN SW SWELL, BECOMING LOCALLY
VERY ROUGH AND CROSSED AT END IN FAR SOUTH.
VIS : MAINLY GOOD, BUT MODERATE IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS.
WIND: NORTHWEST 6 OR 7 NORTH OF FRONT AT TIMES 8, BACKING SOUTHWEST
5 OR 6 SOUTH OF FRONT AT TIMES 7, DECREASING 4 OR 5 LATER
AND BECOMING TEMPORARILY VARIABLE 2 TO 4 AROUND THE 44S.
SEA : ROUGH OR VERY ROUGH AT TIMES HIGH IN EAST. NW SWELL 4 OR
5 M SPREADING GRADUALLY FROM SOUTHWEST, THEN SW SWELL 4 OR
5 M AT END IN FAR SOUTHEAST.
VIS : POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS OVER SOUTHERN.
WIND: WESTERLY 6 OR 7 AT TIMES 8, DECREASING LOCALLY VARIABLE 3 TO
5 IN WEST AT END. GUSTS.
SEA : ROUGH OR VERY ROUGH, BECOMING VERY ROUGH OR HIGH IN SOUTH.
NW SWELL 4 OR 5 M IN SOUTHWEST SOON, THEN SW SWELL 5 M AT END
IN FAR SOUTHWEST.
VIS : POOR OR VERY POOR IN PRECIPITATION.