WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
30th 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:
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FORECAST VALID FROM 301000 TO 011000 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.
2. CAPE WEST: E to NE 35 in the south-east until mid-period.
SYNOPTIC CHART 06:00Z
=====================
High 1038 hPa 40s31e High 1019 20s02e.
Low 998 hPa 43s01w .
Cold front 1: 23s10w 30s03w 36s02w into 43s01w.
AREA FORECAST:
==============
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 15 in the west and north, otherwise W to
SW 15 to 25 in the south but NW 20 to 30 in the south-east at
first.
VIS : Good but moderate in showers and thundershowers in the central
and southern parts.
SEA STATE: 3.0 to 4.0m in the south, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anti-cyclonic 05 to 15, but NW 15 to 25 in the south-west and
south.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0m in the south-west from mid-period, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 20 to 30 in the east at first, otherwise SW 20 to 30
becoming anti-cyclonic 10 to 20 in the west from the second
half of the period.
VIS : Moderate to poor in showers and thundershowers, clearing in
the west from the second half of the period.
SEA STATE: 3.0 to 4.0m, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : E to NE 15 to 25 in the east, reaching 30 to 35 in the south-
east until mid-period, otherwise N to NW 20 to 30, spreading
to the east and south-east towards the end of the period. It
will become SW 20 to 30 in the western parts towards mid-
period.
VIS : Good, but moderate to poor in showers and thundershowers in
the western parts.
SEA STATE: 3.0 to 4.0m except the north-east, with NW swell but S to
SE swell in the south-east.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Ant-cyclonic 10 to 20 but N to NE 25 to 35 in the west.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 in the west, with SW swell, but NE
swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SE 15 to 25, but N to NW 10 to 15 in the extreme north-
east at first and NE 15 to 25 in the south-west, reaching 30
towards the end of the period.
VIS : Good but moderate in showers and thundershowers in places in
the northern parts.
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 west and south.
SEA STATE: 3.0 to 3.5m in the central and southern parts, 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, south-west and south, otherwise
E to NE 05 to 10.
VIS : Good but moderate in showers and thundershowers in the south.
SEA STATE: 3.0 to 3.5m, in the south-west spreading to the south by mid-
period with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW to W 15 to 25, but anticyclonic 05 to 15 in the north
becoming NW 15 to 25 in the south during the first half of
the period.
VIS : Good.
SEA STATE: 3.0 to 4.0m, with SW swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/30 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE RUNNING OVER KER AND EXPECTED OVER SOUTHEASTERN CRO.
PART 2: GENERAL SYNOPSIS, 26/09/30 AT 0000UTC
- HIGH 1034 HPA NEAR 35S/85E.- HIGH 1037 HPA NEAR 40S/30E.- BETWEEN THE TWO CELLS: COLD FRONT AXIS 30S/53E, 40S/63E, 46S/70E, 50S/76E, MOVING EASTWARD 20/25 KT.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/30 AT 0600UTC TO 26/10/01 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS.
WIND : NW 4 TO 6 AHEAD THE FRONT BACKING W TO SW 4 TO 6, SETTING UP
LATER S OR SE 3 TO 5.
SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER SOUTHWESTERN. SW
SWELL 2 TO 4 METERS.
VIS :POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN AND SHOWERS BY WESTERN AREA.
WIND : ANTICLOCKWISE OR NORTH 3 TO 5 OVER NORTHERN, INCREASING N 5/6 AT
TIMES 7 AHEAD THE FRONT , BACKING S 3 TO 5 BEHIND.
SEA : MODERATE LOCALLY ROUGH. SW SWELL 2 TO 3 METERS OVER SOUTHERN.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SNOW OVER EASTERN AREA AT BEGINNING THEN
SHOWERS.
WIND : S OR SW 5/6, INCREASING 7/8 OVER SOUTHERN AREA, SETTING UP AT END
ANTICLOCKWISE 3 TO 5 OVER NORTHERN , AND W 6/7 IN SOUTH.
GUSTS.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH IN SOUTHEASTERN LATER. S
2 TO 4 METERS BY SOUTHERN AREA AT END. VISI: POOR UNDER
PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SNOW.
WIND : NW 6/7 AT TIMES 8 BACKING 6/7 LOCALLY 8. GUSTS.
SEA : VERY ROUGH, LOCALLY HIGH OVER SOUTHERN AREA AT END. NW SWELL 2
TO 4 M IN THE FRONT.
VIS : POOR IN PRECIPITATION.