WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
26TH 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:
=======
FORECAST VALID FROM 261000 TO 271000 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:
====================
CAPE WEST : NW 35 in the south-west and central south, spreading to the
south-east during the second half of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1028 hPa 28s05w, High 1032 hPa 40s40e
Low 1023 hPa 35s26e
1. Cold Front: 31s21w 36s12w 40s04e 45s09e 50s24e into 60s14e
2. Cold Front: 35s50e 41s63e 44s69e into 49s74e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE 15 to 25.
VIS : Good, but moderate in showers and rain in the western parts at
times.
SEA STATE: 3.0 to 3.5m, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 15 to 20, but S to SW 05 to 15 in the east.
VIS : Good.
SEA STATE: 3.0m, with S swell.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to E 15 to 25, but anticyclonic 05 to 15 over the southern
parts. It will become W 10 to 20 in the central south and south-
east during the second half of the period.
VIS : Good, becoming moderate in showers and rain in the south-west and
the central south towards the end of the period.
SEA STATE: 3.0 to 3.5m in the north with E to SE swell, but with SW swell in
the south.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20.
VIS : Good, becoming moderate in showers and thundershowers in the east
toward mid-period.
SEA STATE: 3.0m with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 10 to 20 in the eastern parts, reaching 25 to 30 in the south-
east at first, otherwise SW 15 to 25, reaching 30 in the south-
west.
VIS : Moderate to poor in showers and rain in places, except in the
north-east.
SEA STATE: 3.5 to 4.5m (except in the north-east), reaching 5.0m in the
south-west, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : SE 05 to 15 in the east and north-east, otherwise NW 15 to 25,
reaching 30 to 35 at times in the south-west and central south,
spreading to the south-east during the second half of the period.
VIS : Good, but moderate in showers and rain in the south-west,
spreading to the central and south-eastern parts during the second
half of the period.
SEA STATE: 3.0 to 4.0m (except in the extreme north-west), with S to SW swell
but 4.0 to 4.5 with W to NW in the south-west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 05 to 15 in the east until mid-period, otherwise E to NE
15 to 25. It will become W to NW 15 to 25 over the south-western
parts during the second half of the period.
VIS : Good, but moderate to poor in showers and thundershowers over the
central parts, spreading to the eastern parts during the second
half of the period.
SEA STATE: 3.0 to 4.0m, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE 10 to 20 in the south-west, otherwise E to SE 05 to 15,
reaching 20 in the north at times.
VIS : Good, but moderate in showers and rain in places over the north
and eastern parts.
SEA STATE: 3.0 to 3.5m, with SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, reaching 25 in the extreme south-east while
variable 05 to 10 in the north-east.
VIS : Good, but moderate in showers and rain in places over the western
half.
SEA STATE: 3.0m in the extreme south-east, with SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0m, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 10 in the north-east, otherwise W to NW 15 to
25, reaching 30 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 7.0m in places over the southern
half, with SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/26 AT 0600UTC
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, 26/06/26 AT 0000UTC
- COLD FRONT AXIS 40S/59E, 46S/68E, 51S/73E, MOVING EASTWARD 20KT.
- HIGH 1036 HPA NEAR 38S/81E, MOVING EASTWARD.
- HIGH 1035 HPA NEAR 42S/36E, EXPECTED OVER CRO AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/26 AT 0600UTC TO 26/06/27 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS.
WIND: INCREASING NW 3 TO 5 AHEAD THE FRONT BACKING S 4 TO 6 , AT TIMES 7
OVER SOUTHERN. DECREASING 3 TO 5 BY WESTERN AREA SOON.
SEA : BECOMING ROUGH. ARRIVAL OF A LONG SW SWELL 2 TO 3 M SOON.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS OVER SOUTHERN.
WIND: VARIABLE 2 TO 3 OVER FAR NORTHERN AREA. ELSEWHERE, INCREASING NW 4 TO 6
BY WESTERN AREA AND BACKING S 4 TO 6 AT TIMES 7 BEHIND.
SEA : MODERATE TO ROUGH.SW SWELL 2 TO 3 M OVER SOUTHERN AREA LATER.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS.
WIND: SW 6 TO 7 AT FIRST. DECREASING GRADUALLY ANTICLOCKWISE 2 TO 4 OVER
NORTHERN AND W 5/6 OVER SOUTHERN. GUSTS.
SEA : ROUGH TO VERY ROUGH. SW SWELL INCREASING 3 TO 5 M FROM NORTH TO SOUTH.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS.
WIND: NW 6 TO 7 AHEAD THE FRONT, BACKING SW 5 TO 6 BEHIND. GUSTS.
SEA : ROUGH TO VERY ROUGH. SW SWELL 2 TO 4 M.
VIS : POOR IN PRECIPITATION