Bulletinset for METAREA 7
Edition date (UTC): 2026-09-12 23:19:53
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HIGH SEAS FORECAST
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FQZA31 FAPR 121630



WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.

ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE

12th OF SEPTEMBER 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 122200 TO 132200 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. TRISTAN: NW to N 35 to 40 in the south-west drifting to the south-

            central parts from mid-period.



2. CAPE WEST: Cyclonic 35 in the central-east at first.



3. CAPE EAST: S to SE 35 in the north-west towards mid-period.



4. MARION FORTIES EAST: SW to W 35 to 40 in the south-central and south-

                        eastern parts.



SYNOPTIC CHART 12:00Z

=====================

High 1030 hPa 38s02w, High 1021 hPa 26s66e.



Low 1010 hPa 27s18e, Low 1013 hPa 25s02e.



1. Cold Front: 48s43e 51s52e 54s57e 59s59e into 60s44e.



2. Cold Front: 32s54e 35s60e 40s65e into 41s63e.



AREA FORECAST:

==============

ASCENSION (06S/15S, 00E/20W):

WIND     : S to SE 05 to 15.

VIS      : Good.



ANGOLA (06S/15S, 00E/00N):

WIND     : S to SW 05 to 15, but SE 05 to 15 in the west.

VIS      : Good.



ST HELENA (15S/30S, 00E/20W):

WIND     : NW to N 15 to 25 in the south-west spreading to south-east

           from mid-period, otherwise SE to E 15 to 25. It will become

           anticyclonic 05 to 15 in the northern and central parts

           towards mid-period.

VIS      : Good becoming moderate to poor in showers and thundershowers

           in the south-west from mid-period.

SEA STATE: 3.0 to 4.0m subsiding towards the end of the period reaching

           4.5 to 5.0m in the south-east at first, with SE swell.



TRADES (15S/30S, 00E/WEST COAST):

WIND     : NW to N 10 to 20 in the south-east, otherwise W to SW 05 to 15

           but SE to S 15 to 25 in the south-west until mid-period.

VIS      : Good but moderate to poor in showers and thundershowers in the

           South clearing from mid-period except in the extreme south-

           east.

SEA STATE: 3.0 to 4.0m subsiding in the northern and central parts

           towards mid-period reaching 4.5m in the south-west at first,

           with SE to S swell.



TRISTAN (30S/40S, 00E/20W):

WIND     : E to SE 10 to 20 in the north-east at first, otherwise NW to N

           20 to 30 reaching 35 to 40 in the south-west drifting to the

           south-central parts by mid-period.

VIS      : Good but moderate to poor in showers and rain in the west

           drifting to the east from mid-period while becoming SW 15 to

           25 in the south-west.

SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in places in the south, with

           W to NW swell but SE swell in the north-east.



CAPE WEST (30S/40S, 00E/20E):

WIND     : Cyclonic 20 to 30 reaching 35 in the central east at first,

           otherwise E to SE 15 to 25 in the south-east, becoming N 20 to

           30 in the south-west towards mid-period.

VIS      : Good but moderate to poor in showers and thundershowers in the

           Central-north and north-eastern parts spreading to the south-

           east from mid-period.

SEA STATE: 3.5 to 4.5m except in the south-west reaching 5.0m in the

           central east until mid-period, with SW swell in the south-

           east, otherwise SE swell.



CAPE EAST (32.5S/40S, 20E/50E):

WIND : Anticyclonic 05 to 15 in the central parts, otherwise SW to S

           20 to 30, but SE to E 20 to 30 in the west reaching 35 in the

           north-west towards mid-period.

VIS      : Good but moderate to poor in showers and thundershowers in the

           north-west but moderate in showers and rain in the south-east.

SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in the west and 5.5 to 6.5m

           in the south-east from mid-period, with SW swell, but E swell

           in the north-west.



DURBAN EAST (32.5S/25S, EAST COAST/55E):

WIND : SW to S 10 to 20 in the east, otherwise NE 15 to 25 reaching

           30 in the extreme south-west towards the end of the period,

           but SE to E 15 to 25 in the central parts.

VIS : Good but moderate in showers and rain in the extreme south-

           west.

SEA STATE: 3.0 to 3.5m in the extreme south spreading to the central and

           eastern north towards the end of the period, with SW swell but

           E to SE swell in the south-west.



MOZAMBIQUE CHANNEL:

WIND     : SE 05 to 15 in the south reaching 20 to 30 in the south-east

           from mid-period, otherwise S to SW 05 to 15.

VIS      : Good.



MADAGASCAR EAST (10S/25S, EAST COAST/55E):

WIND : Variable 05 to 10 in the south, otherwise E to SE 15 to

           25.

VIS : Good but moderate in showers and rain in the north.



MARION FORTIES EAST (40S/50S, 35E/50E):

WIND : SW to W 20 to 30 reaching 35 to 40 in the south-central and

           south-eastern parts, moderating 10 to 20 in the north-west by

           mid-period.

VIS : Good but moderate in showers and rain clearing in the west

           towards mid-period and in the east by the end of the period

           with possible snow-showers in the south.

SEA STATE: 5.0 to 7.0m but 8.0 to 9.0m in the south, with W to SW swell.



AREA 2:

======

MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK AMSTERDAM-CROZET-KERGUELEN)



26/09/12 AT 1630UTC



AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).



PART 1: WARNING



- Gale over WAM and AMS.- Strong gale over CRO and KER.



PART 2: GENERAL SYNOPSIS, 26/09/12 AT 1200UTC



- Low 987 near 42S/62E, moving south eastward and deepening expected 977 near 45/75E the 11/09 at 06 UTC, with associated cold front.- Cold front axis 46S/37E, 51S/48E, 58S/58E, displacement Est 20 kt.





PART 3: FORECAST FOR 24 HOURS FROM 26/09/12 at 1800UTC to 26/09/13 at 1800UTC



WAM (30S/40S, 50E/65E)

Frontal rain or showers.

WIND     : NW 5 to 6, at tomes 7 backing SW behind the front ,

           occasionally 8 over far southeastern area at first. Severe

           gusts.

SEA      : rough or very rough, occasionally high and crossed in

           south. SW swell 2 or 4 m.

VIS      : poor in precipitation.



AMS (30S/40S, 65E/80E)

Frontal rain or showers.

WIND      :Increasing 5 to 6 locally 7 ahead the front backing SW 5/6

            locally 7/8 over far southern area. Severe gusts.

SEA       : rough or very rough, becoming locally high in south. SW swell

            3 to 5 m in south.

VIS       :poor in precipitation.



CRO (40S/50S, 50E/65E)

Frontal rain or showers. Snow showers in south.

WIND      : Clockwise 7 or 9, , at times 9, in northeastern, setting up W

            or SW 6/7 at times 8 . Severe gusts.

SEA       : rough or very rough, becoming high over western area at

            end. SW swell 2 to 4 m.

VIS       : poor in precipitation.



KER (40S/50S, 65E/80E)

Frontal rain or showers. Few snow showers in south.

WIND      : becoming clockwise 7 to 8 , at times 9, decreasing

            temporarily W 4 to 6 later. Severe gusts.

SEA       : rough to very rough locally high over northern the low. SW

            swell 4 to 5 m, abating.

VIS       : poor in precipitation.