WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
04th OF SEPTEMBER 2026 AT 17:00 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:
=======
FORECAST VALID FROM 042200 TO 052200 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. CAPE WEST: S to SE 35 in the north-east.
2. CAPE EAST: W to SW 35 in the central-south towards end of period.
3. MARION FORTIES EAST: SW to W 35 to 45 in the south-east becoming
NW to W 35 in the central-west by mid-period but
40 in the west by end of period.
SYNOPTIC CHART 12:00Z
=====================
High 1037 hPa 39s13e.
Low 1015 hPa 28s36e, Low 983 hPa 45s64e, Low 954 hPa 57s03e
1. Cold Front: 33s42e 37s48e 40s56e 43s62e into 45s64e.
2. Cold Front: 38s14w 42s07w 51s10w 56s09e into 57s03e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good, but moderate in light showers.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 15 in the extreme east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 15 to 25 but NE 05 to 15 in the west and central
parts, and N to NW 05 to 15 south-west.
VIS : Moderate in showers but poor in rain in the south.
SEA STATE: 3.0m in the south-west spreading in the south eastwards
towards end of period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 20 to 25 reaching 30 in the central-south.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south, reaching 4.5m in the south-
east, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NE 05 to 15 in the north, otherwise N to NW 15 to 25 reaching
30 in the south-west towards end of the period.
VIS : Good but moderate to poor in showers and rain in a band from
the north-west to the central parts and in the south-west from
mid-period.
SEA STATE: 3.0 to 4.0m, with SW swell, but NW in the south-west.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 20 to 30 reaching 35 in the north-east, but N to NE 05
to 15 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the north-
east, with S to SE swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 05 to 15 in the north-west otherwise W to SW 15 to 25,
reaching 30 in the south-east until mid-period but 35 in the
central-south towards end of period.
VIS : Good, but moderate in showers in the south.
SEA STATE: 3.0 to 4.0m, but 5.0 to 6.0m in the south-east
with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 15 to 25 in the north-east, otherwise SE to S 20 to 30
moderating to 10 to 20 by end period.
VIS : Good, but moderate in showers and thundershowers in the
extreme west and in the south-east spreading to the north-east
by mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the west extending to the
southern parts, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NE 15 to 25, but S to SE 05 to 15 in the south-east spreading
to the central parts from mid-period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20, but NE 10 to 20 in the south.
VIS : Good, but moderate in scattered showers in the north.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW to W 20 to 30 reaching 35 to 45 in the south-east becoming
NW to W 20 to 30 reaching 35 in the central-west by mid-period
but 40 in the west by end of period.
VIS : Moderate in rain and showers, but in rain and snow-showers in
the south.
SEA STATE: 4.5 to 5.5m, but 6.0 to 7.0m in the east reaching 7.5 to 9.0m
in the south-east until mid-period, while spreading eastwards
it will reach 8.0m extreme central-west by end of period, with
W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/04 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Gale or severe gale continuing over WAM and KER.
Gale or severe gale expected over CRO soon.
Gale expected over AMS soon.
PART 2: GENERAL SYNOPSIS, 26/09/04 AT 1200UTC
Low 981 hPa near 45S/64E, moving south-eastward, expected 970
hPa near 49S/787E at 00UTC.
Associated cold front spreading over NW.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/04 at 1800UTC to 26/09/05 at 1800UTC
WAM (30S/40S, 50E/65E)
Frontal rain, showers and squalls.
WIND : NW 6 or 7 ahead the front, backing SW 6 or 7 behind, locally
8 or 9 just behind the front decreasing 4 to 6 from the
north to the South. Severe gusts.
SEA : Rough to very rough becoming high over far southern at
end, crossed in the vicinity of the front. Long SW swell
around 2 meters, decreasing then arrival of SW swell 4 to
6 meters at end.
VIS : Poor or very poor in precipitation.
AMS (30S/40S, 65E/80E)
Scattered showers. Then frontal rain, showers and squalls soon.
WIND : Anticlockwise 3 or 4 over Northern at first then NW 5
or 6, locally 7 over southern, then 7 or 8 ahead the
front backing SW 7 or 8 behind the front later. Severe
gusts.
SEA : Moderate or rough, but very rough over far southern,
becoming rough or very rough soon, but high over far
southern. Long SW swell 3 or 5 meters over
south-western at end.
VIS: Poor or very poor in precipitation.
CRO (40S/50S, 50E/65E)
Frontal rain, showers and squalls. Snowy showers behind the
front.
WIND : W 5 or 6 locally 7, increasing soon W or SW 7 or 8,
locally 9. Violent gusts.
SEA : Very rough to high. Arrival of a long SW swell 5 to
7 m later.
VIS : Poor or very poor in precipitation.
KER (40S/50S, 65E/80E)
Frontal rain or snow, showers and squalls.
WIND: NW 7 or 8, locally 9, over northern, backing W 7 or 8,
locally 9 behind the front later. Violent gusts.
SEA: Very rough to high. Long SW swell 3 to 5 meters,
decreasing and arrival of a long SW swell 5 to 7 meters at
end.
VIS: Poor or very poor in precipitation.