WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
12th OF OCTOBER 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: W to NW 35 over the central parts spreading to the south-east
from mid-period.
2. CAPE WEST: NW 35 in the south-west towards the end of the period.
3. MARION FORTIES EAST: W to NW 35 to 45 in the south.
SYNOPTIC CHART 12:00Z
=====================
High 1023 hPa 28s10w High 1034 hPa 36s59e.
Low 972 hPa 49s23e.
1. Cold Front: 34s17e 40s21e 45s27e into 49s23e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15 but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 10 over the central parts, otherwise E to
SE 10 to 15 but NW 10 to 20 in the south reaching 25 in the
extreme south.
VIS : Good.
SEA STATE: 3.0m in the extreme south, with W to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 in the north and east, otherwise anticyclonic
05 to 10 but NW 10 to 20 in the extreme south-west.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 20 to 30 reaching 35 over the central parts spreading
to the south-east from mid-period. It will become SW 15 to 25
in the south-west from mid-period.
VIS : Moderate to poor in showers and rain, becoming good in the
south-west from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m over the central and eastern
parts from mid-period, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the north-east, otherwise NW 15 to 25
reaching 30 to 35 in the south-west towards the end of the
period.
VIS : Moderate in showers and rain but good in the north-east.
SEA STATE: 3.0 to 4.0m in the south and west reaching 4.5m in the south-
west, with SW to W swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 15 to 25 but SW 15 to 25 in the west for the first
half of the period.
VIS : Good but moderate to poor in showers over the central parts.
SEA STATE: 3.0 to 3.5m, except in the north-east, with mainly SW swell
but N to NE swell over the central parts.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 reaching 25 in the central north but SW 15 to
25 in the extreme south-west.
VIS : Good.
SEA STATE: 3.0m in the central north, with NE swell.
MOZAMBIQUE CHANNEL:
WIND : E to NE 05 to 15.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 but NE 10 to 20 in the south-west.
VIS : Moderate in light showers.
SEA STATE: 3.0m in the extreme east and north, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 20 to 30 reaching 35 to 45 in the south. It will
become anticyclonic 05 to 15 in the extreme north from mid-
period.
VIS : Moderate in showers and rain, becoming good in the south from
mid-period.
SEA STATE: 3.0 to 4.0m in the extreme north, otherwise 4.5 to 5.5m
reaching 6.0 to 8.0m in the south, with W swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/10/12 AT 1500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/10/12 AT 1200UTC
- HIGH 1032 HPA NEAR 35S/56E, SLOWLY MOVING NORTHEASTWARD.
- FRONTAL AREA NEAR 44S/40E, 45S/50E, 49S/63E AND 56S/53E
MOVING EASTWARD.
- OTHER COLD FRONT OVER CRO LATER.
PART 3: FORECAST FOR 24 HOURS FROM 26/10/12 AT 1800UTCTO 26/10/13
AT 1800UTC
WAM (30S/40S, 50E/65E)
FEW SHOWERS.
WIND: ANTICLOCKWISE 2 TO 4, BUT WESTERLY 5 OR 6 OVER
SOUTHERN.
SEA : MODERATE OR ROUGH, LOCALLY VERY ROUGH OVER FAR
SOUTHEASTERN.
VIS : MAINLY GOOD.
AMS (30S/40S, 65E/80E)
FEW SHOWERS.
WIND: S 5 OR 6 OVER NORTHEASTERN AT FIRST, BECOMING
ANTICLOCKWISE 3 TO 5 FROM WEST, BUT W 5 OR 6, AT TIMES 7
WITH SEVERE GUSTS REACHING SOUTHERN AREA SOON.
SEA : MODERATE TO ROUGH, INCREASING VERY ROUGH OVER SOUTHERN SOON
BY SW SWELL 3 OR 4 METERS.
VIS : MAINLY GOOD.
CRO (40S/50S, 50E/65E)
FFRONTAL RAIN OR SHOWERS.
WIND: W TO NW 6 OR 7, AT TIMES 8 WITH SEVERE GUSTS.
SEA : ROUGH OR VERY ROUGH, VERY LOCALLY HIGH OVER SOUTHERN. SW
SWELL 3 TO 5 METERS, ABATING.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS, AT TIMES SNOWY.
WIND: WESTERLY 6 OR 7, AT TIMES 8. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH, BECOMING VERY ROUGH
OR HIGH SOON. SW SWELL 4 OR 5 METERS.
VIS : POOR IN PRECIPITATION.