WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
06TH OF AUGUST 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 061000 TO 071000 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 in the south drifting to the south-east from mid-
period.
2. CAPE WEST: W to NW 35 in the south from mid-period.
3. MARION FORTIES EAST: NW to W 35 in places in the south.
SYNOPTIC CHART 06:00Z
=====================
High 1028 hPa 32s01e, High 1036 hPa 39s64e.
Low 990 hPa 46s14w Low 972 hPa 61s46e.
1. Cold Front: 36s25e 45s33e 55s45e 65s55e into 61s46e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : S to SE 05 to 15 reaching 20 in the north-east, but variable 05
to 10 in the south.
VIS : Good but moderate in places.
SEA STATE: 3.0m in the south-east, with a SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 reaching 25 to 30 in the east, but Anticyclonic
05 to 15 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south and east, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the extreme north, otherwise W to NW 15
to 25 reaching 30 to 35 in the south drifting to the south-east
from mid-period, while becoming SW to S 15 to 25 in the south-
west, spreading to the south-east by the end of the period.
VIS : Good but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the south, with W to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : W to NW 15 to 25 in the south-west reaching 30 to 35 from mid-
period while spreading to the south-east otherwise Anticyclonic
05 to 15, but SE 10 to 20 in the north-east reaching 25 at times.
VIS : Good but moderate in showers and rain in the south.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 5.5m in the south, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 10 to 20 in the east, but Cyclonic 15 to 25 in the
Central parts, otherwise S to SW 10 to 20 becoming Anticyclonic
05 to 15 in the west from mid-period.
VIS : Good but moderate in showers and thundershowers in places.
SEA STATE: 4.5 to 5.5m in the west, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the west, otherwise N to NE 10 to 20
reaching 25 in the north-east, but S to SW 10 to 20 in the
extreme south-west.
VIS : Good but moderate in showers in the east spreading to the extreme
west from mid-period.
MOZAMBIQUE CHANNEL:
WIND : SE to S 05 to 15 reaching 20 in places.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 in the north, but NE 15 to 25 in the south.
VIS : Good but moderate in showers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW to W 15 to 25 reaching 25 to 35 in places in the south, but SW
15 to 25 in the central parts, drifting to the south-east until
mid-period.
VIS : Good but moderate in showers and rain in places, clearing in the
north-west towards mid-period.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 5.5m in the extreme south-west, with
W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/08/06 AT 0600UTC
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, 26/08/06 AT 0000UTC
- COLD FRONT, LOC STORMS, ARRIVING SOON OVER CRO BY SOUTH-WEST
- HIGH 1036 HPA NEAR 38S/67E, MOVING SLOWLY EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/06 AT 0600UTC TO 26/08/07 AT 0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS, WITH LOCALLY HEAVY RAIN IN THE NORTH.
WIND: NORTH TO NORTHEAST 3/4, LOCALLY 5.
SEA : MODERATE, BECOMING ROUGH IN THE SOUTH. SOUTH-SOUTHWEST SWELL 2 TO 3
METERS IN SOUTH.
VIS : POOR DURING PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: EASTERLY 4/5 IN THE NORTH AND VARIABLE ANTICLOCKWISE 2/4 IN THE SOUTH.
SEA : ROUGH, BECOMING MODERATE IN WEST. SOUTH-SOUTHWESTERLY SWELL 3/4 METERS
ABATING.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS.
WIND: NORTHWEST 4/5, INCREASING SOON 5/6 WITH THE FRONT, REACHING LOCALLY 7
WITH VIOLENT GUSTS IN THE FAR SOUTH, BACKING BEHIND SOUTHERLY 4/5 IN
THE FAR SOUTHWEST AT END. BUT VARIABLE 2/4 IN THE NORTHEAST AT START.
SEA : MODERATE TO VERY ROUGH FROM NORTH TO SOUTH. SOUTHWEST SWELL 3/5 METERS,
ABATING, THEN WEST SWELL 2/4 METERS BEHIND THE FRONT.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SCATTERED SHOWERS.
WIND: SOUTHWESTERLY 3 TO 7 FROM THE NORTHWEST TO THE SOUTHEAST, BECOMING
DURING THE DAY VARIABLE ANTICLOCKWISE 2/4 IN THE NORTH AND SETTLING
WESTERLY 5/6 IN THE SOUTH, REACHING LOCALLY 7 WITH VIOLENT GUSTS IN THE
FAR SOUTHWEST AT END.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH IN THE FAR SOUTHEAST.
SOUTHWEST SWELL 4/6 METERS IN THE SOUTHEAST HALF AND 2/4 METERS IN THE
NORTHWEST HALF.
VIS : POOR IN PRECIPITATION