WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
26TH OF JUNE 2026 AT 16:00 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 262200 TO 272200 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 WEST : W to NW 35 to 40 at times in the south-west and central
south, spreading to the south-east during the second half of
the period.
2. MARION FORTIES EAST : N to NW 35 over the south-western parts.
SYNOPTIC CHART 12:00Z
=====================
High 1028 hPa 28s12w, High 1032 hPa 43s43e
Low 1022 hPa 35s26e, low 948 hPa 64s15e
1. Cold Front: 30s20w 36s05w 42s10e 49s22e 56s30e into 64s15e
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 towards mid-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, but moderate in showers and thundershowers in the east.
SEA STATE: 3.0m with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 10 to 20 in the eastern parts, 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 W to NW 15 to
25, reaching 30 to 40 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 towards the end
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 5.0 with W to NW in the south and south-west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 15 to 25 but W to NW 15 to 25 over the south-western
parts, where it will reach 30 in places from mid-period.
VIS : Good, but moderate to poor in showers and thundershowers over the
east and extreme western parts.
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.
VIS : Good, but moderate in showers and rain in places over the western
half at first.
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 : N to NW 10 to 20, but 25 to 30 in the southern parts, reaching 35
over the south-western parts.
VIS : Good, but moderate in showers and rain over the west and northern
parts.
SEA STATE: 3.0 to 4.0m, reaching 5.0m in the southern parts, with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/26 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, 26/06/26 AT 1200UTC
- COLD FRONT AXIS 35S/56E, 50S/80E, MOVING EASTWARD 20KT.
- HIGH 1035 HPA NEAR 41S/44E, EXPECTED OVER CRO AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/26 AT 1800UTC TO 26/06/27
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS AT FIRST, THEN SCATTERED SHOWERS OVER NORTHERN SOON.
WIND:S 4 TO 6, WITH GUSTS BEHIND THE FRONT, BUT VARIABLE 2 OR 3 OVER
NORTHEASTERN, BECOMING SSE 4 OR 5, A TIMES 6 LATER, BUT ANTICLOCKWISE
2 OR 3 OVER SOUTHERN.
SEA : MODERATE TO ROUGH FROM NORTH TO SOUTH, GRADUALLY BECOMING ROUGH.
ARRIVAL OF A LONG SW SWELL 2 TO 3 M SOON..
VISI : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS OVER SOUTHERN.
WIND : OVER NORTHERN : VARIABLE 2 TO 3, BECOMING SE 4 OR 5 BY WESTERN
AT END. ELSEWHERE, NW 4 TO 6 WITH GUSTS, AT TIMES 7 AHEAD THE COLD
FRONT, BECOMING S 4 TO 6 BEHIND, THEN SSE 4 OR 5 AT END.
SEA : MODERATE TO ROUGH. SW SWELL 2 TO 3 M OVER SOUTHWESTERN AREA
LATER.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SHOWERS OVER NORHEASTERN AT FIRST. FEW SHOWERS ELSEWHERE.
WIND: SW 6 TO 7 WITH GUSTS OVER EASTERN AND 3 TO 5 OVER WESTERN, THEN
BECOMING SOON ANTICLOCKWISE 2 TO 4 OVER NORTHERN AND W 5 OR 6 WITH
GUSTS OVER SOUTHERN.
SEA : ROUGH TO VERY ROUGH. SW SWELL 3 TO 5 M FROM NORTH TO SOUTH.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS, BECOMING LESS FREQUENT AT END.
WIND: NW 6 TO 7 AHEAD THE FRONT, BACKING SW 5 TO 6 BEHIND, DECREASING
4 OR 5 OVER NORTHWSTERN AND BECOMING W 5 OR 6 OVER SOUTHWESTERN AT
END. GUSTS..
SEA : ROUGH TO VERY ROUGH. SW SWELL 2 TO 4 M.
VISI: POOR IN PRECIPITATION.=