WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
30th OF SEPTEMBER 2026 AT 16:30 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 302200 TO 012200 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: E to NE 35 in the west.
2. CAPE WEST: E to NE 35 in the south-east at first.
SYNOPTIC CHART 12:00Z
=====================
High 1037 hPa 40s32e High 1024 41s29w.
Low 996 hPa 42s03w .
Cold front 1: 25s03w 31s01w 35s01w into 42s03w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the west and north, otherwise W to
SW 15 to 25 in the southern parts until mid-period.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south and west, subsiding in the west from
mid-period, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anti-cyclonic 05 to 15, but NW 10 to 20 in the south-west and
south at first.
VIS : Good, but moderate in showers and rain in the south-west for
the first half of the period.
SEA STATE: 3.0m in the south-west, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 20 to 30 but anti-cyclonic 10 to 20 in the west and
north.
VIS : Good, but moderate to poor in showers and thundershowers in
the central and eastern parts.
SEA STATE: 3.0 to 4.0m, subsiding in the west from mid-period with SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : E to NE 15 to 25 in the east, reaching 30 to 35 in the south-
east at first, otherwise N to NW 20 to 30, spreading
to the east and south-east towards mid-period but
SW 20 to 30 in the western parts.
VIS : Good, but moderate to poor in showers and thundershowers in
the western parts, spreading to the southern parts from mid-
period.
SEA STATE: 3.0 to 4.0m except the north-east, with SW swell but NE in the
south-east.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Ant-cyclonic 10 to 20 but N to NE 25 to 35 in the west
becoming NW to W 15 to 25 in the extreme west from mid-period.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 in the west, subsiding in the
central and eastern parts from mid-period, with SW swell, but
NE swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE to E 15 to 25, reaching 30 in the north but NE 15 to 25 in
the south-west, reaching 30 from mid-period.
VIS : Good but moderate in showers and thundershowers in places in
the central and northern parts.
SEA STATE: 3.0 to 4.0m, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 reaching 30 in the south-east.
VIS : Good but moderate in showers in the west and south.
SEA STATE: 3.0 to 3.5m in the central and southern parts, with S to SE
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the central parts until mid-period,
otherwise E to SE 10 to 20 reaching 25 in the south and north-
west.
VIS : Good but moderate in showers and thundershowers in the south.
SEA STATE: 3.0 to 3.5m in the south, with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the north, otherwise NW 15 to 25
reaching 30 in the south-west by the end of the period.
VIS : Good.
SEA STATE: 3.0 to 4.0m, subsiding in the central and northern parts from
mid-period, with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/30 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
GALE OVER KER AND OVER FAR SOUTHERN CRO.
PART 2: GENERAL SYNOPSIS, 26/09/30 AT 1200UTC
HIGH 1031 NEAR 32S/90E, STEADILY MOVING EASTWARD.- WEAKENING HIGH
1038 NEAR 40S/33E, STEADILY MOVING EASTWARD.- BETWEEN THE TWO HIGH :
COLD FRONT AXIS 30S/54E, 36S/64E, 42S/71E, 48S/80E, STEADILY MOVING
EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/30 AT 1800UTC TO 26/10/01
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS OVER NORTH-EASTERN.
WIND: S 4/5 AT TIMES 6 WITH GUSTS, BUT NW 4/5 OVER FAR
NORTH-EASTERN AT FIRST. BECOMING LATER, ANTICLOCKWISE
3/5 OVER SOUTHERN BUT SE 5/6 WITH GUSTS OVER NORTHERN.
SEA: MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER FAR
SOUTH-EASTERN. SW SWELL AROUND 3M.
VIS: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN AND SHOWERS.
WIND: NW AHEAD OF THE FRONT 4 TO 6 FROM NORTH TO SOUTH,
LOCALLY 7 OVER FAR SOUTH-EASTERN, BACKING SOUTHERLY 4/5
BEHIND AT TIMES 6. GUSTS.
SEA: MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER FAR
SOUTHERN BY SW SWELL 3 TO 4M.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FEW SHOWERS.
WIND: SW 6/7 OVER SOUTH-EASTERN HALF AT TIMES 8 WITH GUSTS,
BUT ANTICLOCKWISE 3/4 ELSEWHERE AT TIMES 5. BECOMING
GRADUALLY W 5/6 AT TIMES 7 WITH GUSTS, BUT ANTICLOCKWISE
3/4 OVER FAR NORTHERN.
SEA: MODERATE TO ROUGH OVER NORTH-WESTERN HALF, BUT VERY ROUGH
TO HIGH ELSEWHERE BY SW SWELL INCREASING 3 TO 5M.
VIS: MAINLY GOOD.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS OVER NORTH-EASTERN. SNOWY SHOWERS OVER
SOUTHERN BEHIND
WIND: SW 6/7 AT TIMES 8, BUT NW 6/7 OVER FAR NORTH-EASTERN
AT FIRST. DECREASING SW 5/6 OVER FAR NORTHERN LATER.GUSTS.
SEA: VERY ROUGH TO HIGH FROM NORTH TO SOUTH. NW SWELL 3 TO 5M OVER
FAR NORTH-EASTERN AT FIRST, BUT SOUTH-WESTERLY SWELL
SPREADING FROM WEST LATER AND INCREASING 3 TO 5M.
VIS: POOR IN PRECIPITATION