WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22nd 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 222200 TO 232200 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. CAPE EAST: W to SW 35 to 40 in places in the central and north-east from
mid-period.
2. DURBAN EAST: S to SW 35 in places in the west at first and in the south-
central towards the end of the period.
3. MARION FORTIES EAST: N to NW 35 in places in the central and eastern parts
until mid-period, otherwise W to SW 35 to 40 in
places in the central and north-east until mid-
period.
SYNOPTIC CHART 12:00Z
=====================
High 1029 hPa 32s03e High 1021 hPa 30s44e High 1025 hPa 28s92e
Low 961 hPa 55s10w Low 952 hPa 57s19e Low 1013 hPa 31s30e
1. Cold front: 25s35w 33s28w 41s18w 49s07w into 55s10w
2. Cold front: 36s23e 40s26e 47s30e 53s29e into 57s19e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20 but SW 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NW 05 to 15 in the south-west, otherwise E to SE 10 to 20,
but variable 05 in the south-east.
VIS : Good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25, reaching 30 at times until mid-period.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Variable 05 to 10 in the north-east, otherwise W to NW 15 to 25.
VIS : Good but moderate in showers and rain in the west across the
central to the south-central, spreading to the south-east from
mid-period.
SEA STATE: 3.0 to 4.0m except in the northern parts, reaching 4.5 to 5.0m in
the extreme south-west at first, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : SW 15 to 25 in the south-east but S to SE 10 to 20 in the north-
east reaching 25 at times otherwise anticyclonic 05 to 15
but W to NW 15 to 25 in the south-western and south-central parts.
VIS : Good.
SEA STATE: 3.0 to 3.5m except in the central and northern parts, reaching
4.0m in places in the south-east, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 10 to 20 in the east until mid-period, reaching 25 to 30
in places in the south-east until mid-period, otherwise W to SW 15
to 25, spreading to the east from mid-period, reaching 30 to 40 in
places in the central and north-east from mid-period.
VIS : Moderate to poor in the central, spreading to the east towards the
mid-period, otherwise good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the north-west at first and
south-east until mid-period and north, with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SW 20 to 30 in the west, while reaching 35 in places in the
west at first and in the south-central towards the end of the
period, moderating to 15 to 25 towards the end of towards end
period, otherwise N to NW 15 to 25. It will become variable 05 to
10 in the extreme south-west towards by the end of the period.
VIS : Good but moderate to poor in showers and thundershowers in
the south-central, spreading to the south-east towards the end of
the period.
SEA STATE: 3.0 to 4.0m in the south, spreading to the north-east from mid-
period, reaching 4.5 to 5.0m in the south-west at first and south-
central from mid-period, S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : SW 15 to 25 in the south-west towards from mid-period, spreading
to the central towards the end of the period, otherwise S to SE 10
to 20, reaching 25 at time in the south-west towards the end of
the period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20, but N to NE 05 to 15 in the south.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 in the central and east until mid-period while
reaching 30 to 35 in places in the central and eastern parts until
mid-period, otherwise W to SW 20 to 30 towards mid-period,
spreading east towards mid-period, reaching 35 to 40 in places in
the central and north-east until mid-period. It will become NW 15
to 25 in the west towards the end of the period.
VIS : Moderate to poor in rain and showers in the central, spreading to
the east towards mid-period from mid-period and over the south-
west towards the end of the period, otherwise good.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 7.0m in the west from mid-period,
with W to SW swell, becoming NW swell in the west from mid-period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/22 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40%
stronger than the averages given here).
PART 1: WARNING
Storm force 10 expected over KER.- Strong gale running over CRO. -
Gale force 8 running over AMS.
PART 2: GENERAL SYNOPSIS, 26/08/22 AT 1200UTC
Low 965 hPa near 50S/66E with cold front (CF) axis 35S/48E, 37S/64E,
40S/69E, 51S/74E moving eastward 25/30 kt.-Arrival of a cold front
(CG) over CRO and WAM at end.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/22 at 1800UTC to 26/08/23
at 1800UTC
WAM (30S/40S, 50E/65E)
Scattered showers and rain and frontal showers over Western at end.
WIND: SW 5 o 7 setting up anticlockwise 3 to 4 at times 5 by western
area then NW 5 to 6 locally 7 over southern at end. Gusts.
SEA: Rough to very rough, locally high over the southern area.
SW swell 4 to 5 meters locally 6 to 7 over far south-eastern.
VIS: Very poor in precipitations.
AMS (30S/40S, 65E/80E)
Rain and frontal showers at times thunderstorms then scattered
showers later.
WIND: W or SW 5 to 6 at times 7 behind. and even 8 over far
southern, decreasing anticlockwise 3 to 5 over western
area later. Gusts.
SEA: Rough to very rough from north to south, locally high over
southern. SW swell 2 to 4 meters increasing later 4 to 5 meters
and even 6 to 7 meters over southern.
VIS: Poor in precipitations.
CRO (40S/50S, 50E/65E)
Rain and frontal showers. Snow.
WIND: Clockwise 7/8, locally 9 over eastern area at first, setting up
SW 4 to 6 soon, and increasing later N 6/7ahead the front (CG)
then SW 6/7 temporarily 8/9 near the low behind the front. Violent
Gusts.
SEA: High, locally very high at first, then rough to very rough by
western area. SW swell 4 to 5 meters locally 6 to 7 meters over
north-eastern.
VIS: Very poor in precipitations.
KER (40S/50S, 65E/80E)
Rain and frontal showers. Snow. Scattered showers at end.
WIND: Clockwise 7/8, locally 9/10, setting up later SW 4 to 5
by western area. Violent Gusts.
SEA: Very rough to high locally very high. WSW swell 4 to 5 meters
locally 6 to 7 meters.
VIS: Very poor in precipitations.