WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
08TH OF JUNE 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 081000 TO 091000 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:
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1. MARION FORTIES EAST: N to NW 35 in the south-west towards the end of
the period.
SYNOPTIC CHART 06:00Z
=====================
High 1023 hPa 31s00e, High 1023 hPa 24s05e, High 1035 hPa 38s62e
Low 994 hPa 42s09w, Low 975 hPa 54s23e, Low 1012 hPa 44s34e
1. Cold Front: 25s36w 30s28w 35s17w 40s10w into 42s09w
2. Cold Front: 43s13e 45s17e 50s21e into 54s23e
3. Cold Front: 36s22e 40s32e into 44s34e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to E 10 to 20 in the north, otherwise anticyclonic 05 to 15
but NW 15 to 25 in the south. It will become S to SW 10 to 20
in the south-west towards the end of the period
VIS : Good but moderate in showers and thundershowers in the south-
west.
SEA STATE: 3.0 to 3.5m in the south-west, with W to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, but variable 05 to 10 in the south-west.
VIS : Good.
TRISTAN (30S/40S, 00E/20W) :
WIND : Variable 05 to 10 in the north-east until mid-period,
otherwise W to NW 20 to 30, but S to SW 10 to 20 in the west,
spreading over the western half towards the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the western parts, spreading over the central parts towards
mid-period.
SEA STATE: 3.0 to 4.0m in the southern and western halves, reaching 4.5
to 5.0m in the south-west, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 05 to 15 in the extreme north-east, otherwise anti-
cyclonic 05 to 15 but W to NW 15 to 25 in the south and south-
west.
VIS : Good, but moderate in showers and rain in the east at first,
but in the south-west towards the end of the period.
SEA STATE: 3.0 to 4.0m in the southern half, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 20 to 30 in the east, otherwise NW 10 to 20 but W to
SW 15 to 25 in the west, spreading to the central parts
towards the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the eastern, southern and western parts.
SEA STATE: 3.0 to 4.0m in the east with E to NE swell, but with S to SW
swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20 in the central parts, otherwise N to NE 10 to
20 but NW 15 to 25 in the west and S to SW 15 to 25 in the
south-west, spreading to the west towards the end of the
period.
VIS : Good, but moderate to poor in showers and thundershowers in
the east, but in the south-west towards the end of the period.
SEA STATE: 3.0 to 3.5m in the eastern parts, with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the south-west, otherwise S to SW 05 to
15, reaching 20 in the south towards the end of the period.
VIS : Moderate in showers and thundershowers in places.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to NE 15 to 25, but SE 05 to 15 in the north at first.
VIS : Moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0 to 3.5m in the southern parts until towards the end of the
period, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 reaching 30 to 35 in the south-west towards
the end of the period.
VIS : Moderate to poor in showers and rain in places.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-west towards
the end of the period, with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/06/08 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE RUNNING OVER KER AT FIRST.
PART 2: GENERAL SYNOPSIS, 2026/06/08 AT 0000UTC
- HIGH 1034 HPA NEAR 38S/62E, STATIONARY.
- LOW 1012 HPA NEAR 27S/75E, STATIONARY.
- ARRIVAL OF AN OCCLUSION 32S/42E, 42S/50E, 46S/57E MOVING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 2026/06/08 AT 0600UTC TO 2026/06/09 AT 0600UTC
WAM (30S/40S, 50E/65E)
RAIN, SHOWERS AND THUNDERSTORM OVER SOUTHWESTERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 BUT NE TO N 4 TO 5 BY WESTERN AREA INCREASING
5 TO 6 WITH GUSTS SOON.
SEA : MODERATE TO ROUGH. S TO SW SWELL 2 TO 3 METERS.
VIS : POOR UNDER PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
RAIN OR SHOWERS OVER NORTHERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 OVER WESTERN AREA BUT SE 5 TO 6, LOCALLY 7 AT
FIRST, OVER NORTHERN AREA.
SEA : ROUGH TO VERY ROUGH BECOMING MODERATE TO ROUGH SOON. S SWELL 2 TO 4
METERS ABATING.
VIS : POOR UNDER PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
RAIN OR SHOWERS.
WIND: NW TO W 5 TO 6 WITH GUSTS OVER NORTHERN AREA BUT ANTICLOCKWISE 3 TO
4 OVER SOUTHERN AREA. NW 5 TO 6 BY SOUTHWESTERN AREA AT END.
SEA : MODERATE TO ROUGH LOCALLY VERY ROUGH OVER SOUTHEASTERN AREA AT
FIRST. SW SWELL 2 TO 3 METERS.
VIS : POOR UNDER PRECIPITATIONS.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS AND RAIN OR SHOWERS SOON.
WIND: SW TO W 6 TO 7, LOCALLY 8 AT FIRST BUT ANTICLOCKWISE 3 TO 4 OVER
FAR NORTHERN. W 5 TO 6 BY WESTERN AT END.
SEA : ROUGH TO VERY ROUGH BECOMING MODERATE TO ROUGH AT END. SW SWELL 3
TO 4 METERS THEN 2 TO 3 METERS AT END.
VISI: POOR UNDER PRECIPITATIONS.