WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
26th 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 261000 TO 271000 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 06:00Z
=====================
High 1030 hPa 39s04w, High 1028 hPa 32s59e
Low 1008 hPa 46s22e
1. Cold Front: 40s16e 41s18w 43s21w into 46s22e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good but moderate in rain in places in the western parts.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20 but SW 05 to 10 in the east and north-east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the southern parts, otherwise E to SE 10
to 20 but N to NE 05 to 15 in the south-west from mid-period.
VIS : Good but moderate in rain in the north-west, south-east and
central parts.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W to NW 05 to 15 in the south-east until mid-period, otherwise
S to SE 10 to 20, reaching 25 in the north-east and south-
east.
VIS : Good but moderate in showers and rain in places in the
southern parts.
SEA STATE: 3.0m in the southern parts from mid-period, with W to SW
swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 becoming N to NW 05 to 15 in the west
towards mid-period.
VIS : Good but moderate in showers and thundershowers in the
western, central and southern parts.
SEA STATE: 3.0m in the south-eastern parts at first, with W to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : SW 15 to 25 in the south-east, but NW 05 to 15 in the north-
east for the first half of the period, otherwise S to SE 10 to
20 reaching 25 in the east and north-east. It will be
anticyclonic 05 to 15 in the south-west, spreading to the
south towards the end of the period.
VIS : Good but moderate in showers and thundershowers in places in
the east and central parts for the first-half of the period.
SEA STATE: 3.0 to 3.5m in the east, southern and central parts, drifting
to the north-east from mid-period, with S to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Cyclonic 10 to 20 in the south-central parts, but N to NW 15
to 25 in the central and eastern parts, and S to SW 15 to 25
in the west reaching 30 in the north-west from the second half
of the period.
VIS : Good but moderate in showers and thundershowers in
in the western and central parts, spreading to the south-east
from mid-period.
SEA STATE: 3.0 to 4.0m, with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 15 to 25 becoming SW 20 to 30 in the south-west during
the second half of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west and north-east towards mid-period.
SEA STATE: 3.0m in the southern and eastern parts, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 becoming E to NE 05 to 15 in the west from
mid-period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20 but E to NE 05 to 15 in the south.
VIS : Good but moderate in showers and rain in places in
central and south.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 becoming cyclonic 15 to 25 in the
central and northern parts towards mid-period, reaching 30 in
the north-east.
VIS : Good becoming moderate to poor in showers and thundershowers
in the northern and western parts.
SEA STATE: 3.5 to 4.5m reaching 5.5 to 6.5m in the in the south-eastern
parts for the first half of the period, with W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/26 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- STRONG GALE FORCE 9 OVER CRO.- GALE EXPECTED OVER KER.
PART 2: GENERAL SYNOPSIS, 26/09/26 AT 0000UTC
- COLD FRONT OVER FAR NORTHEASTERN AMS, LEAVING THE AREA AT FIRST._ HIGH 1026 HPA OVER WAM, WITH A RIDGE EXTENDING SOUTHWEST, MOVING EASTWARD SLOWLY.- COLD FRONT OVER FAR SOUTHERN KER AT FIRST.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/26 AT 0600UTC TO 26/09/27 AT 0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS.
WIND : ANTICLOCKWISE 3/4 LOCALLY 5/6 OVER SOUTHWESTERN AREA AT FIRST.
SEA : ROUGH TO VERY ROUGH. SW SWELL 3 TO 4 METERS.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN, SHOWERS AND SQUALLS OVER FAR NORTHEASTERN AT
FIRST.
WIND : BECOMING ANTICLOCKWISE 3 TO 5.
SEA : ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL 3 TO 4 METERS.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS.
WIND : WESTERLY 7 TO 8 TEMPORARILY 9 AT FIRST BECOMING ANTICLOCKWISE 3
TO 5 BY WESTERN AREA SOON. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH BECOMING ROUGH OVER WESTERN AREA AT END. SW
SWELL 5 TO 6 METERS.
VIS : GOOD.
KER (40S/50S, 65E/80E)
FRONTAL, RAIN OR SHOWERS OVER SOUTHERN AREA.
WIND : BECOMING W 6/7 AT TIMES 8 AND DECREASING S 4 TO 5 IN NORTHWESTERN
AREA. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH. SW SWELL 4 TO 6 METERS.
VIS : POOR IN PRECIPITATION.