WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10th 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 101000 TO 111000 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. MARION FORTIES EAST : W to SW 35 to 40 in the south-east until mid-
period.
SYNOPTIC CHART 06:00Z
=====================
High 1022 hPa 32s19w, High 1038 hPa 31s53e,
Low 968 hPa 61s01e,
1. Cold Front: 41s06w 50s16e 57s18e 61s11e 64s00e into 61s01e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but SW 05 to 10 in the east.
VIS : Good, but moderate in showers and thundershowers in the north-
east until mid-period.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 over the central parts, otherwise SE to
E 15 to 25.
VIS : Good but moderate in showers and thundershowers in the south-
east.
SEA STATE: 3.0 to 4.0m except in the north, with SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25, but variable 05 to 10 in the north from mid-
period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south, with SE to S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15, but S to SE 10 to 20 in the north-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : SW 05 to 15 in the south, otherwise S to SE 10 to 20 reaching
25 in the north, becoming Anticyclonic 05 to 15 in the south-
west from mid-period.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW to N 10 to 20 in the east until mid-period, otherwise
Cyclonic 15 to 25 reaching 30 in places, becoming SE to S 05
to 15 in the west towards mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in
places in the west and central parts, spreading to the south-
east from mid-period.
SEA STATE: 3.0 to 4.0m, except in the north-east, reaching 4.5m in the
south-east from mid-period, with SW to W swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SW 10 to 20 in the extreme west from mid-period, otherwise N
to NE 15 to 25 but Anticyclonic 05 to 15 in the south-east
spreading to the east and central parts from mid-period.
VIS : Good but moderate in rain and showers in the north-east.
SEA STATE: 3.0 to 3.5m in the north-east and extreme south-west, with E
to NE swell but SW swell in the extreme south-west from mid-
period.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good, but moderate in showers in the western parts at first.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 in the north reaching 30 in the extreme
north-west but NE 10 to 20 in the south.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 20 to 30 reaching 35 to 40 in the south-east until
mid-period, becoming NW 15 to 25 in the south-west from mid-
period reaching 30 but cyclonic 20 to 30 in the north.
VIS : Moderate in showers and thundershowers in the north, spreading
to the south-west from mid-period.
SEA STATE: 3.0 to 4.0m in the extreme north otherwise 4.5 to 5.5m,
reaching 6.5 to 7.5m in the central parts but 8.0 to 8.5m in
the south until mid-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)
2026/09/10 AT 0400UTC
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.
PART 2: GENERAL SYNOPSIS, 26/09/10 AT 0000UTC
- WAVING COLD FRONT CF OVER CRO AND KER AREA, AXIS 40S/32E, 43S/45E, 46S/58E, 51S/63E AND MOVING EASTWARD 20/25KT.- HIGH 1034 HPA NEAR 32S/52E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/10 AT 0600UTC TO 26/09/11 AT 0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS BUT FRONTAL RAIN AND SHOWERS UNDER CF ET END BY SOUTHERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 AT TIMES 5 OVER NORTHERN AREA, BUT W 5 TO 6
WITH GUSTS OVER SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH BUT MODERATE OVER NORTH-WESTERN AREA. LONG
SOUTH-WESTERLY SWELL 3 TO 5M.
VIS : MAINLY GOOD.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: W TO SW 5 TO 6, INCREASING LOCALLY 7 OVER SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTHERN AREA BY LONG SW
SWELL 4 TO 5 METERS.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS UNDER CF.
WIND: WESTERLY 6 TO 7, LOCALLY 8 OVER SOUTHERN. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH. LONG SW SWELL 4 TO 6 METERS.
VIS : VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN, SHOWERS AND SQUALLS UNDER CF.
WIND : WESTERLY TO SOUTH-WEST 7 TO 8. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH. LONG WESTERLY TO SOUTH-WEST
SWELL 4 TO 6 METERS.
VIS : POOR OR VERY POOR IN PRECIPITATION.