WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
28TH OF MAY 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 282200 TO 292200 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 in the west, drifting to the central parts
towards mid-period.
2. MARION FORTIES EAST: W to SW 35 in the south at first.
SYNOPTIC CHART 12:00Z
=====================
High 1024 hPa 35s09e, High 1037 hPa 37s65e
Low 1009 hPa 35s12w, Low 952 hPa 65s38e
1. Cold front: 35s23e 40s35e 45s42e 50s44e 55s50e 60s55e into 65s38e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good, but moderate in showers in the north-west.
SEA STATE: 3.0m in the east and north-east until mid-period, with S to SW
swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 10 in the east.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-west until mid-period, with S to SW
swell.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NW 15 to 25 in the south, otherwise SE to E 10 to 15.
VIS : Good, but moderate in showers and thundershowers in the south-
west.
SEA STATE: 3.0 to 3.5m in the south-west, with SW to W swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 reaching 25 in the south-east until mid-
period, but anticyclonic 05 to 10 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with S to SW swell.
TRISTAN (30S/40S, 00E/20W) :
WIND : W to NW 15 to 25.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 3.5m in places, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 in the north-east, otherwise anticyclonic 05
to 15, but N to NW 20 to 30 in the south-west.
VIS : Good, but moderate in showers and rain in the south-west,
spreading to the south towards mid-period.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the south-east at first,
with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 10 to 20 in the east, otherwise S to SE 10 to 20
reaching 25 to 35 in the west, drifting to the central parts
towards mid-period, while becoming E to NE 15 to 25 in the
west.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m in the southern and western halves, reaching 4.5
to 5.0m in the south-west at first, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE 05 to 15 over the central parts, otherwise NE to E 10 to 20
but S to SW 05 to 15 in the extreme west, reaching 20 to 25 in
the south-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 mid-period.
SEA STATE: 3.0m in the extreme east with E to SE swell, but in the south-
west with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15, but variable 05 to 10 in the south-west until
mid-period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise E to SE 05 to 15
reaching 20 to 25 in the extreme north-west.
VIS : Moderate in showers and thundershowers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the south at first,
becoming NW 20 to 30 in the south-west towards the end of the
period.
VIS : Good, but moderate to poor in showers and rain in the east at
first.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 6.0m 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)
26/05/28 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
NIL
PART 2: GENERAL SYNOPSIS, 26/05/28 AT 1200UTC
- COLD FRONT CF AXIS 42S/37S, 48S/44E, 54S/48E, 60S/53E MOVING SLOWLY EASTWARD.
- HIGH 1036 HPA NEAR 37S/66E, MOVING SLOWLY.
PART 3: FORECAST FOR 24 HOURS FROM 26/05/28 AT 1800UTC TO 26/05/29
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS UNDER CF OVER FAR SOUTH-WESTERN. SHOWERS AND
SQUALLS OVER FAR NORTH-EASTERN.
WIND: ANTICLOCKWISE 3/4 AT TIMES 5, INCREASING NE 5/6 AHEAD CF.
SEA : MODERATE TO ROUGH. SW SWELL 2 METERS.
VISI: POOR OR VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE 3/4 AT TIMES 5.
SEA : BECOMING MODERATE TO ROUGH. SW SWELL 2 TO 4 METERS ABATING.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS UNDER CF.
WIND: NW 4/5 INCREASING 5/6 AT TIMES 7 AHEAD CF BACKING SW 4/5 BEHIND
CF. GUSTS.
SEA : MODERATE TO ROUGH, BECOMING VERY ROUGH OVER SOUTH-WESTERN AREA
AT END. W SWELL 3 TO 5 METERS.
VISI: POOR TO VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS, THEN FRONTAL RAIN AND SHOWERS UNDER CF OVER
SOUTH-WESTERN AREA.
WIND: VEERING GRADUALLY NW 5/6 BY WESTERN AREA AHEAD CF.
SEA : ROUGH TO VERY ROUGH BY SW SWELL 3 TO 5 METERS.
VISI: POOR IN PRECIPITATION.