WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
15th OF SEPTEMBER 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:
=======
FORECAST VALID FROM 151000 TO 161000 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 WEST: W to NW 35 in the south-east at first.
2. CAPE EAST: W to NW 35 to 40 in the south-western parts until mid-
period and south-central parts until the end of the period.
3. MARION FORTIES EAST: W to NW 35 over the central and eastern parts.
SYNOPTIC CHART 06:00Z
=====================
High 1025 hPa 33s23w, High 1038 hPa 35s52e
Low 928 hPa 65s31e, Low 1015 hPa 32s30e
1. Cold Front: 33s07e 36s11e 44s19e 51s31e 60s47e 67s39e 67s27e 62s28e
into 65s31e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 15 to 25.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 15 to 25 but SW 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the central until mid-period, otherwise S
to SE 15 to 25 in the south and south-east.
VIS : Good but moderate in showers and rain in places in the central
and south-west.
SEA STATE: 3.0m in places over the central until mid-period, with S to SW
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W to NW 15 to 25 in the south-eastern part until mid-period,
otherwise S to SE 15 to 25.
VIS : Good but moderate in showers and rain in the south-western
parts at first.
SEA STATE: 3.0m in places in the south-western parts, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 15 to 25 in the south-western parts and western parts
towards the end of the period, otherwise anticyclonic 05 to
15.
VIS : Good but moderate in showers and rain in places in the south-
western parts until mid-period.
SEA STATE: 3.0 to 4.0m except in the north-western parts, reaching 4.5m
in the extreme south-west, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : W to NW 15 to 25 in the east until mid-period, reaching 30 to
35 in the south-east at first, otherwise S to SW 15 to 25. It
will become E to SE 15 to 25 in the eastern parts but
anticyclonic 05 to 15 in the western parts towards the end of
the period.
VIS : Moderate to poor in showers and thundershowers over the north-
west across the central to the south-eastern parts until mid-
period, otherwise good.
SEA STATE: 3.0 to 4.0m, except in the north-eastern parts, reaching 4.5
to 5.0m in places in the southern parts, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 15 to 25, reaching 30 to 40 in the south-western parts
until mid-period and south-central parts until the end of the
period. It will become S to SW 15 to 25 in the south-western
parts towards mid-period, spreading over the west and central
parts towards the end of the period.
VIS : Moderate in showers and thundershowers over the west and the
central parts, otherwise good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in places in the central-
south and the west, with E to NE swell, but NW in the west and
central south.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 05 to 15 in the extreme west south of Port Shepstone,
spreading to Cape Vadal towards mid-period, otherwise E to NE
15 to 25, reaching 30 in the northern parts (south of
Madagascar) until mid-period. It will become W to SW 15 to 25
in the extreme south-west by the end of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west until mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the central at first, with E to
NE swell, but S to SW in the east.
MOZAMBIQUE CHANNEL:
WIND : E to NE 10 to 15 becoming SE 15 to 25 in the north towards the
end of the period.
VIS : Good.
SEA STATE: 3.0m in the south-east at first, with SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : SE 15 to 25, reaching 30 in the north-west at times, but E to
NE 15 to 25 in the south.
VIS : Moderate in showers and rain in west and north places.
SEA STATE: 3.0 to 4.0m, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25 reaching 30 to 35 over the central and
eastern parts, spreading to the eastern parts by mid-period
becoming cyclonic 15 to 25 in the central parts from mid-
period. It will become variable 05 to 10 in the southern parts
towards the end of the period.
VIS : Moderate to poor in showers and rain, except in the north-
east, otherwise good.
SEA STATE: 4.0 to 5.0m, reaching 5.5 to 6.5m in the central and eastern
parts, with W to NW swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/15 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 over eastern KER.
PART 2: GENERAL SYNOPSIS, 26/09/15 AT 0000UTC
- Low 969 near 49S/80E, moving eastward.- High 1035 near 33S/50E, slowly moving eastward.- Cold front expected over southwest CRO at end.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/15 at 0600UTC to 26/09/16 at 0600UTC
WAM (30S/40S, 50E/65E)
Scattered showers.
WIND : Anticlockwise 3 to 5, but SW 5 or 6, at times 7 with gusts over
eastern at first, increasing NW 5 or 6 over far southwestern at
end.
SEA : Very rough or high from west to east, becoming rough or very rough
later. Long SW swell 4 to 6 meters abating 2 to 4 meters at end.
VIS : Poor in precipitation.
AMS (30S/40S, 65E/80E)
Scattered showers, but more numerous over eastern at first.
WIND : SW 6 or 7, decreasing anticlockwise 3 to 5 from west at end.
Gusts.
SEA : Very rough or high. Long SW swell 4 to 6 meters.
VIS : Poor in precipitation.
CRO (40S/50S, 50E/65E)
Scattered showers, becoming more numerous over southwestern and southern later.
WIND : NW 5 or 6, but SW 5 or 6, at times 7 over eastern at first, soon
increasing NW 6 or 7 over southern. Gusts.
SEA : very rough but high over northeastern, soon becoming rough or very
rough. Long SW swell 4 to 6 meters abating 2 to 4 meters at end.
VIS : poor or very poor in precipitation.
KER (40S/50S, 65E/80E)
Scattered showers, becoming more numerous over southern at end.
WIND : SW 6 or 7, at times 8 over far eastern at first, later decreasing
5 or 6 from west, increasing NW 6 or 7 over far southwestern at
end. Severe gusts.
SEA : Very rough to high, becoming rough or very rough at end. Long W
swell 4 or 5 meters, abating 3 or 4 meters at end.
VIS : Poor or very poor in precipitation.