WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
03RD 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 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: NW 35 in the south-east until mid-period.
2. CAPE WEST: S to SE 35 to 40 in the east.
3. CAPE EAST: SE 35 to 40 in the south and west.
4. MARION FORTIES EAST: SE to E 35 to 40 in the north-west.
SYNOPTIC CHART 06:00Z
=====================
High 1040 hPa 46s22e
Low 945 hPa 64s06w, Low 1015 hPa 36s35e
1. Cold Front: 28s19w 35s13w 40s09w 45s04w 50s00e 55s09e into 64s06w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but W to SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : NE to E 10 to 20, but N to NW 05 to 10 in the south-west,
spreading to the south-east towards the end of the period,
while becoming S to SW 15 to 25 in the south-west.
VIS : Good, but moderate in showers and thundershowers in the south-
west.
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 the end of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east, with S to SW swell.
TRISTAN (30S/40S, 00E/20W) :
WIND : S to SW 15 to 25, but NW 15 to 25 in the east, reaching 30 to
35 in the south-east until mid-period.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m in the western and southern halves, reaching 5.0m
in the south, with NW to W swell but with SW swell in the
west.
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 to 40 in the east.
VIS : Good, but moderate in showers and thundershowers in the east,
but in the south-west towards the end of the period.
SEA STATE: 3.5 to 4.5m in the east, with S to SE swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 15 to 25 in the central parts, otherwise SE 20 to 30,
reaching 35 to 40 in the south and west.
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 the end of the period.
VIS : Moderate to poor in showers and thundershowers but good in the
north-west.
SEA STATE: 3.0 to 4.0m in the south-west towards the end of the period,
with SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 in the north, otherwise variable 05 to 10 but SW
05 to 15 in the south-east until mid-period. It will become N to
NE 15 to 25 in the south-west towards the end of the period.
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.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 in the south, otherwise SE to E 15 to 25 reaching
30 to 40 in the north-west.
VIS : Good, but moderate in showers and thundershowers in the north.
SEA STATE: 3.5 to 4.5m with SW swell, reaching 5.0 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.