WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
29th OF SEPTEMBER 2026 AT 16:00 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 292200 TO 302200 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: E to NE 35 in the west.
SYNOPTIC CHART 12:00Z
=====================
High 1034 hPa 40s24e.
Low 1015 hPa 27s12e Low 1002 hPa 42s50e Low 985 hPa 45s09w.
Cold front 1: 28s09w 33s06w 39s05w into 45s09w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anti-cyclonic 05 to 10 in the north, otherwise W to SW 15 to
25 reaching 30 in places but NW 20 to 25 in the south-east for
the first half of the period.
VIS : Good but moderate in showers and thundershowers in the south.
SEA STATE: 3.0 to 4.0m in the south, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SW 05 to 15 but NW 10 to 20 in the south-west.
VIS : Good, becoming moderate in showers and rain in the extreme
south-west from mid-period.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 20 to 30 in the east for the first half of the period,
otherwise SW 20 to 30.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in places in the west, with
SW swell, but NW swell in the east for the first half of the
period.
CAPE WEST (30S/40S, 00E/20E):
WIND : E to NE 15 to 25 reaching 30 in the south-east, but N to NW 20
to 30 in the west.
VIS : Good, becoming moderate to poor in showers and rain in the
west from mid-period.
SEA STATE: 3.0 to 4.0m in the south-east and west, with NW swell but S to
SE swell in the south-east.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 15 to 25 but E to NE 25 to 35 in the west.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0 in the south-east and in the
west, with SW swell, but E swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 10 to 15 in the extreme north-east at first, otherwise
S to SE 15 to 25.
VIS : Good but moderate in showers and thundershowers in the east.
SEA STATE: 3.0 to 4.0m, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 reaching 30 in the south-east.
VIS : Good but moderate in showers in the extreme west.
SEA STATE: 3.0 to 3.5m, reaching 4.0m in the south-east, with S to SE
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 in the north, otherwise E to NE 05 to 15. It
will become SE 15 to 25 in the extreme south-west from mid-
period.
VIS : Good but moderate in showers and rain in the south.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW to W 15 to 25, becoming anticyclonic 05 to 10 in the north
from mid-period.
VIS : Good but moderate in showers and rain in the south and east
for the first half of the period.
SEA STATE: 3.0 to 4.0m, reaching 5.0m in the north-east at first, with SW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/29 AT 1500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER CRO AND KER AREA.
PART 2: GENERAL SYNOPSIS, 26/09/29 AT 1200UTC
- LOW 993 HPA NEAR 52S/61E WITH COLD FRONT CF ASSOCIATED AND AXIS
33S/54E, 39S/59E, 43S/63E, 47S/68E MOVING EASTWARD 20/25KT.
- HIGH
1036 HPA NEAR 37S/79E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/29 AT 1800UTCTO 26/09/30
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS UNDER CF.
WIND: NORTHWESTERLY 5 TO 6 AHEAD THE FRONT BACKING W TO SW
6 TO 7 BEHIND.
SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER SOUTH-WESTERN.
SW SWELL 2 TO 4 METERS.
VIS : POOR TO VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN AND SHOWERS BY SOUTH-WESTERN AREA.
WIND: ANTICLOCKWISE 2 TO 4 INCREASING NORTH-WESTERLY 5 TO 6
AHEAD THE FRONT, LOCALLY 7 OVER SOUTH-EASTERN AREA.
SEA : MODERATE LOCALLY ROUGH. SW SWELL 2 TO 3 METERS.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SNOW OVER EASTERN AREA AT BEGINNING THEN
SHOWERS.
WIND: N TO NW 6 TO 7, SETTING-UP W TO SW 6 TO 7 LOCALLY 8
OVER SOUTHERN AREA AT END.
SEA : MODERATE TO ROUGH LOCALLY VERY ROUGH FROM SOUTH TO NORTH.
NW SWELL 2 TO 4 METERS.
VIS : POOR UNDER PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SNOW UNDER CF.
WIND: N 5 TO 6 INCREASING 7 TO 8. BACKING SW 6 TO 7 BEHIND.
SEA : MODERATE TO ROUGH LOCALLY VERY ROUGH. SW SWELL 2 TO 3
METERS AT BEGINNING THEN NW SWELL 2 TO 3 METERS BY
WESTERN AREA.
VIS : POOR TO VERY POOR UNDER PRECIPITATION.