WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
03RD OF JUNE 2026 AT 13:30 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 032200 TO 042200 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: S to SE 35 to 40 in the south and west, but N to NE 35 to
40 in the central parts towards the end of the period.
2. MARION FORTIES EAST: SE to E 35 to 40 in the north-west, where it will
become NE 35 to 40 towards the end of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1041 hPa 46s25e
Low 945 hPa 66s05w, Low 1013 hPa 36s35e
1. Cold Front: 26s18w 35s10w 40s05w 50s04e 55s10e into 66s05w
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but W to SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NW 05 to 15 in the south-east, otherwise NE to E 10 to
20, but S to SW 15 to 25 in the south-west.
VIS : Good, but moderate in showers and thundershowers in the south-
west, spreading to the south-east towards the end of the
period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25, becoming E to NE 10 to 20 in the south-west
towards mid-period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east until towards the end of the
period, with S to SW swell.
TRISTAN (30S/40S, 00E/20W) :
WIND : NW 20 to 30 in the east, otherwise S to SW 15 to 25 reaching
30 in the south, but SE 15 to 25 in the north-west.
VIS : Moderate to poor in showers and thundershowers, becoming good
in the west towards the end of the period.
SEA STATE: 3.0 to 4.0m in the western and southern halves, reaching 5.0m
in the south, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : N to NW 20 to 30 in the south-west, otherwise S to SE 15 to 25
reaching 30 in the east until towards the end of the period.
VIS : Good, but moderate in showers and rain in the east, but in the
south-west towards mid-period.
SEA STATE: 3.5 to 4.5m in the east with S to SE swell, but in the south-
west towards the end of the period with W to NW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 20 to 30, reaching 35 to 40 in the south and west, but
N to NE 15 to 25 in the central parts, where it will reach 30
to 40 towards the end of the period.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.5 to 4.5m in the western half, reaching 5.0 to 6.0m in the
south and extreme north-west, with SE swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10, but E to NE 10 to 20 in the west, where it
will reach 25 to 30 towards mid-period. It will become S to SW
10 to 20 in the extreme south-west towards the end of the
period.
VIS : Moderate to poor in showers and thundershowers but good in the
north-west until mid-period.
SEA STATE: 3.0 to 4.0m in the south-west towards mid-period, with SE
swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 in the north, otherwise variable 05 to 10 but N
to NE 15 to 25 in the south-west.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : SE 10 to 20, but variable 05 to 10 in the south.
VIS : Moderate in showers and thundershowers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the south, otherwise SE to E 15 to 25
reaching 30 to 40 in the north-west, where it will become NE
30 to 40 towards the end of the period.
VIS : Good, but moderate in showers and thundershowers in the north.
SEA STATE: 3.0 to 3.5m with SW swell, reaching 4.0 to 6.0m in the north-
west, with E to NE swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/06/03 AT 0400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE EXPECTED OVER KER AT END.
PART 2: GENERAL SYNOPSIS, 2026/06/03 AT 0000UTC
- FRESH OR STRONG DISTURBED WESTERLY FLOW OVER FAR SOUTHERN AREAS WITH
ASSOCIATED WAVING FRONT, DECREASING SLOWLY.
- SQUALLY LINES OVER WAM.
- HIGH 1037 OVER AMS.
- DEEPENING LOW, EXPECTED 1015HPA NEAR 40S/60E AT 18UTC, THEN 1006HPA
NEAR 42S/68E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 2026/06/03 AT 0600UTC TO 2026/06/04 AT 0600UTC
WAM (30S/40S, 50E/65E)
THUNDERSQUALLS WITH SEVERE GUSTS MOVING EASTWARDS.
WIND: N OR NE 4 OR 5, AT TIMES 6 OVER EASTERN, DECREASING FROM WEST SOON
VARIABLE 2 TO 4, THEN BECOMING S OR SW 5 OR 6, AT TIMES 7 WITH
SEVERE GUSTS OVER SOUTHERN AT END.
SEA : MODERATE OR ROUGH, BECOMING VERY ROUGH OVER FAR SOUTHERN AT END.
VIS : POOR WITH PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE 2 TO 4, BECOMING N 4 OR 5 OVER WESTERN AND W 4 OR 5
OVER SOUTHERN LATER, THEN NW 4 TO 6 WITH GUSTS FROM NE TO SW AT
END.
SEA : MODERATE OR ROUGH.SW SWELL 2 OR 3M.
VIS : MODERATE WITH PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN OR SHOWERS, BECOMING LESS FREQUENT AT END.
WIND: OVER NORTHERN, NW 4 OR 5, AT TIMES 6 WITH GUSTS. OVER SOUTHERN, S 4
OR 5, AT TIMES 6 WITH GUSTS OVER FAR SOUTHEASTERN, BECOMING
GRADUALLY S OVER THE ALL AREA LATER, 5 OR 6, AT TIMES 7 WITH SEVERE
GUSTS OVER NORTHERN AT END.
SEA : MODERATE OR ROUGH, BUT VERY ROUGH OR HIGH OVER SOUTHERN, BECOMING
ROUGH OR VERY ROUGH OVER THE ALL AREA LATER. SW SWELL 4 OR 5 M OVER
SOUTHERN.
VIS : POOR WITH PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SHOWERS, THEN THUNDERSQUALLS WITH SEVERE GUSTS LATER.
WIND: W 5 OR 6, BUT 6 OR 7 WITH SEVERE GUSTS OVER EASTERN AND SOUTHERN,
DECREASING S 4 OR 5 OVER SOUTHERN LATER, INCREASING S 6 OR 7, AT
TIMES 8 WITH SEVERE GUSTS OVER NORTHWESTERN AT END.
SEA : ROUGH OR VERY ROUGH, LOCALLY HIGH OVER SOUTHERN. SW SWELL 4 OR 5 M.
VIS : POOR WITH PRECIPITATION.