WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
23rd OF JULY 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:
=======
FORECAST VALID FROM 232200 TO 242200 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 EAST: Cyclonic 35 to 45 in the central parts.
2. DURBAN EAST: SW to S 35 in the extreme west until mid-period as well as in
the south-central parts towards the end of the period.
3. MARION FORTIES EAST: SE to S 35 in the extreme north-west at first, as
well as NW to N 35 to 40 in the south-west towards
the end of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1029 hPa 30s11w, High 1035 hPa 40s61e
1. Cold Front: 32s18e 38s29e 45s40e 50s51e 58s59e 64s50e 67s34e into 66s30e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : SW to S 05 to 15 in the east, otherwise SE 15 to 20.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south, otherwise E to SE 15 to 20, but NE
05 to 15 in the south-west.
VIS : Moderate in light rain in the central and western parts, otherwise
good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : SE to S 15 to 25.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with SW swell but SE in the north.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the north-east, otherwise NW to W 15 to
25, reaching 30 in the south-central parts at first, but S to SE
05 to 15 in the south-west reaching 20 by the end of the period.
VIS : Good but moderate in showers and rain in the south-west spreading
to the south-east and north-west from mid-period becoming poor in
the south-west towards the end of the period.
SEA STATE: 3.0 to 4.0m except in the north-west subsiding in the north-east
from mid-period, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anti-cyclonic 05 to 15 in the north, otherwise NW to W 15 to 25
reaching 30 in places in the extreme south-central and south-
eastern until the end of the period, but SE 15 to 20 in the
north-east.
VIS : Good but moderate in showers and rain in the south-west drifting
to the south-east towards mid-period, clearing by the end of the
period.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 6.0m in the south-east subsiding by
towards the end of the period, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Cyclonic 25 to 35 in the east reaching 40 to 45 in places in the
Central parts, but variable 05 to 10 in the south-west at first
while becoming NW to W 15 to 25 reaching 30 towards the end of the
period.
VIS : Good but moderate to poor in showers and thundershowers in the
central parts, drifting to the east from mid-period, becoming
moderate in showers and rain in the south-west towards the end of
the period.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in the west spreading to the
central parts by mid-period while reaching 6.0 to 6.5m towards the
end of the period, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 15 to 25 in the east, otherwise SW to S 20 to 30 reaching
35 in the extreme west until mid-period while spreading to the
east reaching 35 in the south-central parts towards the end of the
period.
VIS : Good but moderate to poor in showers and thundershowers in
the west drifting to the central parts by mid-period but moderate
in showers and rain in the north-east from mid-period.
SEA STATE: 3.0 to 3.5m in the north-east at first and 3.5 to 4.5m in the
west reaching 5.0 to 5.5m in the south-west towards the end of the
period, with S to SE swell in the north-east, otherwise SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the south, otherwise S to SE 05 to 15. It
will become SW 15 to 25 in the south from mid-period.
VIS : Good becoming moderate in showers and rain in the south by mid-
period.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 15 to 25, but NE 05 to 15 in the south-west spreading to
the south-east by the end of the period.
VIS : Moderate in showers and rain in the south, otherwise good.
SEA STATE: 3.0 to 3.5m in the south subsiding by the end of the period, with
SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW 20 to 30 in the north-east until towards the end of the
period, otherwise SE to S 15 to 25 reaching 35 in the extreme
north-west at first. It will become NW to N 20 to 30 in the west
from mid-period reaching 35 to 40 in the south-west towards the
end of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
north until mid-period, otherwise moderate in showers and rain the
south-east until towards the end of the period and in the west
by the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south-west while
spreading to the north and east from mid-period, with W to SW
swell, but NW swell in the south and west.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/23 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Nil.
PART 2: GENERAL SYNOPSIS, 26/07/23 AT 1200UTC
- High 1033 near 41S/64E moving slowly Eastward.
- Cold front (CF) axis 32S/15E, 49S/50E, 58S/59E, 64S/40E moving slowly Eastward.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/23 at 1800UTC to 26/07/24 at 1800UTC
WAM (30S/40S, 50E/65E)
Scattered showers
WIND : anticlockwise 3/4 at times 5 then N 5/6 over Western area later.
SEA : moderate to rough. SW swell 2 to 3 meters abating.
VIS : Good.
AMS (30S/40S, 65E/80E)
Scattered showers
WIND : S to SE 5/6 becoming anticlockwise 3/4 over Southern area but E
5/6 over Northern area.
SEA : Rough to very rough from North to South becoming rough everywhere
soon. SW swell 3 to 4 meters.
VIS : Good.
CRO (40S/50S, 50E/65E)
Scattered showers then frontal rain and showers (CF) soon by South-Western area.
WIND : anticlockwise 3/4 at times 5 increasing NW 6/7 with gusts behind
CF then later SE 3/4 at times 5 over far South-Western area.
SEA : rough to very rough. SW swell 3 to 4 meters increasing 4 to 5
meters over far South-Western area.
VIS : poor in precipitation.
KER (40S/50S, 65E/80E)
Scattered showers then frontal rain and showers (CF) at end over far South-Western area.
WIND : S to SW 6/7 becoming anticlockwise 3/4 over Northern area but W
then NW 5/6 temporarily 7 over Southern area.
SEA : rough to very rough. SW swell 3 to 5 meters.
VIS : poor in precipitation.