WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
02ND OF AUGUST 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:
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FORECAST VALID FROM 022200 TO 032200 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. ST HELENA: Cyclonic 35 in the south-east until mid-period.
2. TRISTAN: Cyclonic 35 in the north-east at first, but W to NW 35 in the
south-west drifting to the south-east from mid-period.
3. MARION FORTIES EAST: N to NW 35 in the south, drifting to the south-east
by mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1028 hPa 29s22w, High 1036 36s65e.
Low 1012 hPa 31s03w, Low 1000 hPa 54s23w, Low 1016 hPa 30s42e.
1. Cold Front: 24s03w 34s00e 39s05w 47s19e 58s32e into 54s23w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 10 to 20.
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 : Cyclonic 25 to 35 in the south-east until mid-period, otherwise S
to SE 05 to 15 reaching 20 in places, but Anticyclonic 05 to 15 in
the south-west.
VIS : Good, but moderate in showers and thundershowers in the north and
south-east until mid-period.
SEA STATE: 3.0 to 4.0m in the south and central parts, reaching 4.5 to 5.5m
in the south-west until mid-period, with S to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Cyclonic 15 to 25 in the south-west, otherwise SW to S 05 to 15.
VIS : Good but moderate in showers and thundershowers in the south-west.
SEA STATE: 3.0 to 4.0m in the west, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 15 to 25 in the north-east reaching 35 at first,
otherwise W to NW 15 to 25, reaching 30 to 35 in the south-west
drifting to the south-east from mid-period. It will become S to
SW 15 to 25 in the south-west towards mid-period.
VIS : Good but moderate in showers and thundershowers in the north-east
until mid-period, and in the south-west spreading to the south-
east from mid-period.
SEA STATE: 3.0 to 4.0m in the south and north-west reaching 5.0 to 6.0m in
the south, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : N to NW 15 to 25 in the south-west reaching 30, spreading to the
south-east by the end of the period, otherwise Anticyclonic 05 to
15.
VIS : Good but moderate in showers and rain in the west.
SEA STATE: 3.0m in the north-west at first and in the extreme south-west by
the end of the period, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 05 to 15 reaching 20 to 25 in the west, but Cyclonic 15 to
25 in east.
VIS : Good but moderate in showers and thundershowers in the east.
SEA STATE: 3.0 to 4.0m, with E to SE swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 15 to 25 reaching 30 in places until mid-period, but NE
to N 15 to 25 in the east.
VIS : Moderate to poor in showers and thundershowers, clearing in the
west from mid-period.
SEA STATE: 3.0m to 4.0m, with E to SE swell but S to SW swell in the central
parts.
MOZAMBIQUE CHANNEL:
WIND : S to SW 10 to 20, but W to NW 10 to 20 in the extreme south.
VIS : Good but moderate in showers and thundershowers in the southern
parts.
SEA STATE: 3.0 to 3.5m in the south, with S to SW swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the south, otherwise E to SE 10 to 20 reaching
25.
VIS : Good but moderate in showers and thundershowers in places.
SEA STATE: 3.0m in the south and east, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north, spreading to the south-west by
the end of the period, otherwise N to NW 15 to 25, reaching 30 to
35 in the south, drifting to the south-east by mid-period.
VIS : Good but moderate in showers in places.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the south, 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)
26/08/02 AT 1700UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER CRO
- STRONG GALE FORCE 9 OVER KER.
PART 2: GENERAL SYNOPSIS, 26/08/02 AT 1200UTC
- THUNDERY LOW 1011 NEAR 29S/40E, SLOW-MOVING WITH A CONVERGENCE LINE
TO THE NORTH-WEST.
WAM
- COLD FRONT (CF) OVER SOUTH KER WITH LOW 960 HPA NEAR 60S/84E,
MOVING RAPIDLY EASTWARDS.
- HIGH 1037 HPA NEAR 37S/65E, EXPECTED 1034 HPA NEAR 34S/69E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/02 AT 1800UTC TO 26/08/03
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN OR THUNDERSTORMS IN THE NORTH-WEST.
WIND: NORTH TO NORTH-EAST 4/5, LOCALLY 6 IN THE NORTH-WEST, BUT
VARIABLE ANTICLOCKWISE 2/4 IN THE SOUTH-EAST.
SEA: ROUGH, BECOMING LOCALLY MODERATE. SOUTHERLY SWELL 2 TO 3 METERS
IN THE EAST, DECEASING, AND EASTERLY SWELL 2 TO 3 METERS IN THE
NORTH-WEST.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND:
NORTH-WESTERN HALF: ANTICLOCKWISE 2/4.
SOUTH-EASTERN HALF: SOUTH-WESTERLY 6/7, DECREASING 5/6 DURING THE
DAY.
SEA: ROUGH TO HIGH FROM THE NORTH-WEST TO THE SOUTH-EAST.
SOUTH-SOUTH-WESTERLY SWELL 3 TO 6 METERS.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SHOWERS LOC SNOW IN THE SOUTH..
WIND:
NORTHERN HALF: WESTERLY 4/5, BUT 6/7 IN THE SOUTH-EAST.
SOUTHERN HALF: WESTERLY 6/7, LOCALLY 8 IN THE SOUTH-EAST AT FIRST.
SEA: ROUGH TO VERY ROUGH, BUT HIGH IN THE SOUTH-EAST. SOUTH-WESTERLY
SWELL 3 TO 5 METERS OVER THE SOUTH-EAST HALF.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR FRONTAL SHOWERS, THEN SHOWERS ; LOC SNOW IN THE SOUTH.
WIND:
NORTH-WESTERN HALF: WESTERLY 7/8, LOCALLY 9 AT FIRST, DECREASING BY
WEST DURING THE DAY 5 TO 7 FROM NORTH TO SOUTH.
SOUTH-EASTERN HALF: WESTERLY 8/9 WITH VIOLENT GUSTS, DECREASING BY
WEST DURING THE DAY 6/7, LOCALLY 8.
SEA: VERY ROUGH TO HIGH IN THE NORTH-WEST HALF AND HIGH TO VERY HIGH
IN THE SOUTH-EAST HALF. SOUTH-WESTERLY SWELL 4 TO 7 METERS.
VISI: VERY POOR.=