WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
03rd 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 031000 TO 041000 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 places over the central and south-east at first.
2. MARION FORTIES EAST: W to NW 35 in the south-east until mid-period.
SYNOPTIC CHART 06:00Z
=====================
High 1026 hPa 27s20w, High 1037 35s67e.
Low 1012 hPa 28s01e, Low 1015 hPa 31s41e, Low 979 hPa 57s38e, Low 952 hPa 51s01e.
1. Cold Front: 37s08e 40s20e 45s31e 50s42e into 57s38e.
2. Cold Front: 35s29w 38s22w 40s16w 44s06w 47s01w 51s05e into 51s01e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15, reaching 20 to 25 in the west at first.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20 but variable 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : S to SW 15 to 25 in the east and south-east until tomorrow
morning, otherwise anti-cyclonic 05 to 15.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the central and eastern parts, reaching 4.5 to 5.5m
in the east during the first half of the period, with S to SW
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Cyclonic 15 to 25 in the west until mid-period, otherwise S to SE
05 to 15.
VIS : Good but moderate in showers and thundershowers in the west and
south-west until mid-period.
SEA STATE: 3.0 to 3.5m in the west, reaching 4.0m until tomorrow morning,
with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 20 to 30, reaching 35 in places over the central and
south-east at first, but SW 15 to 25 in the south, spreading to
the west from tomorrow morning and central parts by the end of the
period.
VIS : Good but moderate to poor in showers and rain in the south and
south-west, spreading to the west and south-east from the evening,
as well as central from tomorrow morning.
SEA STATE: 3.5 to 4.5m in the central and southern parts, spreading to the
north and east from the evening, reaching 5.0 to 5.5m in the south
until tomorrow morning, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 10, but W to NW 15 to 25 in the south and west,
reaching 30 in places in the south-west.
VIS : Good becoming moderate in showers and rain in the south-west from
the evening.
SEA STATE: 3.0 to 4.0m in the south-west, spreading to the south and west
from mid-period, while reaching 4.5m in the south-west, with SW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 10 in the west, becoming N to NE 15 to 25 from the
evening, otherwise N to NE 10 to 20.
VIS : Good but moderate in showers and thundershowers in the east and
north-east.
SEA STATE: 3.0 to 3.5m, in the east and south-west until mid-period, with E
to NE swell in the east, but SW in the south-west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 15 to 25 in the east, becoming N to NE 10 to 20 from
tomorrow morning, otherwise S to SW 05 to 15, becoming NE 10 to 20
in the extreme south-west from mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in places
in the east and central parts, clearing in the central from
tomorrow morning.
SEA STATE: 3.0m to 4.0m in the central and eastern parts, subsiding in the
central from this evening, with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : N to NW 05 to 15 in the south-east until mid-period, but SW 05 to
15 in the south-west until tomorrow morning, otherwise S to SE 05
to 15.
VIS : Good but moderate in showers and thundershowers in the southern
Parts until tomorrow morning.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the south, otherwise E to SE 15 to 25.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0m in the south and east, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Variable 05 to 10 in the north, otherwise W to NW 15 to 25,
reaching 30 in southern parts at times, but 35 in the south-east
until mid-period.
VIS : Good but moderate in showers in places in the east until tomorrow
morning.
SEA STATE: 3.0 to 4.0m in the central and southern parts, reaching 4.5 to
5.0m in the south, subsiding in the south-west from mid-period,
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)
26/08/03 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- STRONG GALE RUNNING OVER KER.
- GALE EXPECTED OVER CRO LATER.
PART 2: GENERAL SYNOPSIS, 26/08/03 AT 0000UTC
- COLD FRONT , LOW ACTIVITY, OVER CRO AND KER.
- CONVERGENCE LINE WITH SQUALLS OVER NORTHWESTERN WAM DUE TO A LOW OVER WESTERN WAM'S AREA.
HIGH 1036 HPA NEAR 37S/67E, EXPECTED OVER NORTHERN AMS AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/03 AT 0600UTC TO 26/08/04 AT 0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS, LOCALLY THUNDERSTORM.
WIND : ANTICLOCKWISE 2 TO 4 INCREASING NE 5 OVER NORTHWESTERN AREA, BECOMING
VARIABLE 2 TO 4 AT END. GUSTS IN SQUALLS.
SEA : MODERATE TO ROUGH. SOUTHERLY SWELL 2 TO 3 METERS IN THE EAST,
DECEASING, AND EASTERLY SWELL 2 TO 3 METERS IN THE NORTH-WEST.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND : ANTICLOCKWISE 3 TO 5 INCREASING W OVER SOUTHEASTERN AREA AT FIRST.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTHEAST. SOUTH-SOUTH-WESTERLY
SWELL 3 TO 6 METERS LOCALLY 6 METERS IN SOUTHEASTERN AREA AT FIRST.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
SHOWERS LOCALLY SNOW.
WIND : W 4 TO 6, INCREASING 6/7 AT TIMES 8 OVER SOUTHERN AREA. GUSTS.
SEA : MODERATE TO ROUGH OVER NORTHWESTERN AREA, ROUGH TO VERY ROUGH
ELSEWHERE AND LOCALLY HIGH OVER SOUTHERN AREA. SOUTH-WESTERLY SWELL
3 TO 5 METERS.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS. LOCALLY SNOW.
WIND : SW OR W 6 TO 7 , INCREASING LOCALLY 8/9. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH AND HIGH TO VERY HIGH OVER SOUTHEASTERN AREA.
SOUTH-WESTERLY SWELL 4 TO 6 METERS.
VIS : VERY POOR IN PRECIPITATIONS.