WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
14th OF AUGUST 2026 AT 16:00 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 142200 TO 152200 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 SW 35 in the west otherwise NW 35 in the south-east
during the first period.
2. CAPE WEST: N to NW 35 in the south, spreading to the south-east
from mid-period.
3. DURBAN EAST: E to SE 35 in the central north at first.
4. MARION FORTIES EAST: W to NW 35 in the south-west.
SYNOPTIC CHART 12:00Z
=====================
High 1037 hPa 43s41e.
Low 960 hPa 51s09w; Low 990 hPa 48s12w
1. Cold Front: 25s32w 31s14w 37s06w 51s08w into 51s09w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15, variable 05 to 10 in the south.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but variable 05 to 10 in the north.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the north, otherwise N to NW 15 to 25
reaching 30 in the south-east.
VIS : Good in the north-east, otherwise moderate to poor in showers
and rain.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the south-west, with S to SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 05 to 15 in the north-east otherwise variable 05 to 10
but W to NW 05 to 15 in the south at first.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the extreme south-west, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 25 to 35 in the west otherwise NW 20 to 30 reaching 35
In the south-east during the first period.
VIS : Moderate to poor in showers and thundershowers in the west
from mid-period.
SEA STATE: 4.0 to 5.0m, in the south, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 in the north-east, otherwise N to NW 15 to
25 reaching 30 to 35 in the south, spreading to the south-east
from mid-period.
VIS : Good but moderate in rain and showers in the west, spreading
to the central parts from mid-period.
SEA STATE: 3.0 to 4.0m, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the south-east until mid-period,
otherwise E to NE 15 to 25, but NW 20 to 30 in the west where
it will become W to NW 10 to 20 from the mid-period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-west with NE swell, and the extreme
eastern parts, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25, reaching 30 to 35 in the central north at
first, but NE 15 to 25 in the extreme south-west.
VIS : Good but moderate to poor in showers and thundershowers in
places over the north-east and the central northern parts.
SEA STATE: 3.5 to 4.5m in the south, otherwise E to SE swell.
MOZAMBIQUE CHANNEL:
WIND : SE 05 to 15 in the south-east, otherwise S to SW 15 to 25, but
variable 05 in the north-east.
VIS : Good in places in the east, otherwise moderate in showers and rain.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20, but NE 25 in the south-west from mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in
the extreme south-west.
SEA STATE: 3.0m in the south, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north-eastern parts, otherwise W
to NW 15 to 25, reaching 30 to 35 in the south-west.
VIS : Good, but moderate in showers and rain in the west spreading
to the south-east from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the south, with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/14 AT 1600UTC
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 AMS ANDKER.
- GALE FORCE 8 OVER CRO.
PART 2: GENERAL SYNOPSIS, 26/08/14 AT 1200UTC
- HIGH 1038 HPA NEAR 43S/42E WITH A RIDGE EXTENDING NORTH-EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/14 AT 1800UTCTO 26/08/15
AT 1800UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS.
WIND: S TO SW 5 TO 6 OVER THE EASTERN HALF AREA THEN ANTICLOCKWISE 3 TO 4
BY WESTERN AREA.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTH-EASTERN AREA. LONG SSW
SWELL 4 TO 6 METERS.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS OVER EASTERN AREA.WIND: SW 6 TO 7 INCREASING 7 TO 8 AND
REACHING 9 LOCALLY OVER SOUTH-EASTERN AREA.SEA: BECOMING ROUGH TO
HIGH. LONG SSW SWELL 5 TO 6 METERS.VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS.
WIND: SW 6 TO 7, REACHING LOCALLY 8 OVER EASTERN AREA, DECREASING LATER 4
TO 5, LOCALLY 6 BY WESTERN AREA.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER EASTERN AREA. LONG SW SWELL 4
TO 6 METERS.
VIS : POOR UNDER PRECIPITATION.
KER (40S/50S, 65E/80E)
FREQUENT SHOWERS OVER NORTHERN AREA.
WIND: SW 7 TO 8 INCREASING 8 TO 9 WITH STRONG GUSTS.
SEA : BECOMING VERY ROUGH TO HIGH. LONG SW SWELL 5 TO 7 METERS.
VIS : VERY POOR UNDER PRECIPITATION.