WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
13th OF OCTOBER 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 131000 TO 141000 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: Cyclonic 35 until mid-period.
2. CAPE WEST: N to NW 35 to 40 in the extreme west towards mid-period,
spreading to the central south towards end of the period.
3. CAPE EAST: N to NW 35 in the extreme south-west towards end of the
period.
4. MARION FORTIES EAST: W to SW 35 to 40 in the south until mid-
period.
SYNOPTIC CHART 06:00Z
=====================
High 1022 hPa 29s06e High 1032 hPa 31s61e.
Low 998 hPa 37s09w, Low 1017 hPa 29s32e, Low 974 hPa 53s40e.
1. Cold front: 31s20w, 33s13w into 37s09w.
2. Cold Front: 38s37e 41s44e 43s50e 46s55e 52s50e into 53s40e.
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 10 to 15 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 W to NW 15 to 25 in the south. It will become
variable 05 to 10 in the extreme south-west towards end of the
period.
VIS : Good, but moderate in showers and rain in the extreme south-
west.
SEA STATE: 3.0 to 3.5m 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 15 to 25 in the extreme south-west.
VIS : Good.
SEA STATE: 3.0m in the extreme south-west towards end of the period, with
SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 25 to 35, but SW to W 15 to 25 in the west, spreading
to the east from mid-period.
VIS : Moderate to poor in showers and rain, but good in the south-
west, spreading to the south-east by mid-period. It will
become moderate in showers and rain in the south-west in the
second half of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m over the central and eastern
parts, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the north-east, otherwise N to NW 20
to 30, reaching 35 to 40 in the extreme west towards mid-
period, spreading to the central south towards end of the
period. It will become S to SW 15 to 25 in the south-west
during the second half of the period.
VIS : Moderate to poor in showers and rain, clearing in the south-
west towards end of the period, but good in the north-east.
SEA STATE: 3.0 to 4.0m in the south and west reaching 4.5 to 5.5m in the
south-west, spreading to the south-east towards end of the
period, while reaching 6.0m in the central south in the second
half of the period, with W to NW swell, becoming SW swell in
the south-west from mid-period.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 10 in the central, otherwise N to NW 15 to 25,
reaching 30 to 35 in the extreme south-west towards end of the
period. It will become NE 15 to 25 in the north-west from mid-
period.
VIS : Good but moderate in showers over the central parts, spreading
to the east towards mid-period when it will become moderate to
poor in showers and rain in the extreme south-west.
SEA STATE: 3.0 to 4.0m, except in the north-east, while reaching 4.5 to
5.0m in the extreme south-west towards end of the period, with
mainly W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 reaching 25 to 30 in the central north but S
to SW 15 to 25 in the extreme south-west until mid-period.
VIS : Good, but moderate in showers and rain in the extreme south
west in the second half of the period.
SEA STATE: 3.0m in the central north, with NE swell.
MOZAMBIQUE CHANNEL:
WIND : E to NE 05 to 15, but W to SW 05 to 15 in the east where it
will become S to SE 10 to 20 from mid-period.
VIS : Good, becoming moderate in showers in the extreme north from
mid-period.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 but NE 15 to 25 in the south-west.
VIS : Moderate in light showers.
SEA STATE: 3.0m, except in the south-west, 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 until mid-
period, but anticyclonic 05 to 15 in the extreme north. It
will become N to NW 15 to 25 in the west towards mid-period,
spreading to the south-east by end of the period.
VIS : Moderate in showers and rain in the north until mid-period,
otherwise good. It will become moderate in showers and rain in
the south-west in the second half of the period, spreading to
the extreme south-east towards end of the 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, subsiding to 3.5 to 4.5m in
the west in the second half of the period, with W to SW swell,
becoming NW swell in the west towards end of the period.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/10/13 AT 0400UTC
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 AND KER.
PART 2: GENERAL SYNOPSIS, 26/10/13 AT 0000UTC
- HIGH 1032 HPA NEAR 32S/61E, SLOWLY MOVING NORTH-EASTWARD.
- LOW 971 HPA NEAR 53S/33E WITH COLD FRONT CF ASSOCIATED AND AXIS 39S/32E, 42S/39E, 44S/43E, 45S/47E MOVING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/10/13 AT 0600UTC TO 26/10/14 AT 0600UTC
WAM (30S/40S, 50E/65E)
FEW SHOWERS.
WIND: ANTICLOCKWISE 2 TO 4, BUT WESTERLY 5 OR 6 OVER SOUTHERN AREA.
SEA : MODERATE TO ROUGH. SW SWELL 2 TO 3 METERS.
VIS : GOOD.
AMS (30S/40S, 65E/80E)
FEW SHOWERS OVER SOUTHERN AREA.
WIND: ANTICLOCKWISE 3 TO 5 FROM NORTH-WESTERN AREA BUT W 5 OR 6 WITH
GUSTS OVER SOUTHERN AREA.
SEA : MODERATE TO ROUGH LOCALLY VERY ROUGH. SW SWELL 3 TO 5 METERS.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SHOWERS UNDER CF.
WIND: W TO NW 7 OR 8 LOCALLY 9. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTHERN AREA. SW SWELL 4 TO
6 METERS.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS, AT TIMES SNOWY UNDER CF.
WIND: WESTERLY 6 OR 8, AT TIMES 9. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH, BECOMING VERY ROUGH TO HIGH. SW SWELL 4 TO 6
METERS.
VIS : POOR IN PRECIPITATION.=