WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
04th OF OCTOBER 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 041000 TO 051000 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, and W to SW 35 to 40 over
the southern parts, spreading to the south-east from mid-
period.
2. CAPE WEST: W to SW 35 over the west and south-western parts during the
second half of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1024 hPa 36s37w, High 1024 hPa 27s02e,
High 1036 hPa 44s33e, High 1032 hPa 36s52e.
Low 948 hPa 55s01w, Low 1019 hPa 25s36e,
Low 1019 hPa 29s67e, Low 980 hPa 57s62e.
1. Cold Front: 21s38w 30s18w 35s02w 40s09e 45s18e 50s20e into 55s01w.
2. Cold Front: 38s44e 42s50e 47s60e 52s67e into 57s62e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 25.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 10 in the north-east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SW 10 to 20 in the south-east, otherwise E to SE 15 to 25.
VIS : Good but moderate in showers and light rain in places over the
southern half.
SEA STATE: 3.0 to 4.0m in the south-west, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 but 25 in the north-east.
VIS : Good.
SEA STATE: 3.0m in the north-east, with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 15 to 25 in the eastern parts, reaching 30 to 35 in the
south-east, otherwise W to SW 20 to 30, reaching 35 to 40 over
the southern parts, spreading to the south-east from mid-
period.
VIS : Good but moderate in showers over the southern parts, during
the first half of the period.
SEA STATE: 4.0 to 6.0m, reaching 7.0 to 9.0m m over the southern half,
with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NE 15 to 25 in the east and south-east at first, otherwise W
to NW 15 to 25, becoming W to SW 30 to 35 over the west and
south-western parts during the second half of the period.
VIS : Moderate in showers in the west and 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 north and north-west, reaching 4.5
to 6.5m in the south-west, where it will reach 7.0 to 7.5m
during the second half of the period, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 in the east at first, otherwise E to NE 20 to 30,
becoming N to NW 10 to 15 in the west towards the end of the
period.
VIS : Good but moderate to poor in showers and thundershowers in the
extreme northern parts and the south-east.
SEA STATE: 3.0 to 4.0m, except in the east and south-eastern parts, with
E to NE swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SE in the north-west, otherwise E to NE 15 to 25.
VIS : Good but moderate to poor in showers and thundershowers in the
north, central parts and the south-west.
SEA STATE: 3.0 to 3.5m across the south-west, central parts, and the
north-west, with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : SE 10 in the west at first, otherwise N to NE 05 to 10.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to NE 10 to 15 in the south, otherwise SE 10 to 20.
VIS : Good but poor in thundershowers over the western parts.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 20 to 30 in the south-east at first, otherwise anticyclonic
05 to 15, becoming N to NW 20 to 30 over the south-western
parts during the second half of the period.
VIS : Good.
SEA STATE: 3.0 to 4.0m reaching 5.5 to 6.0m in the southern parts, with W
to SW swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/10/04 AT 0500UTC
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 CRO.
PART 2: GENERAL SYNOPSIS, 26/10/04 AT 0000UTC
- DEEPENING THUNDERY LOW OVER NORTHERN AMS, 1015 NEAR 29S/67E, SLOWLY MOVING EASTWARD.- COLD FRONT OVER CRO, RATHER RAPIDLY MOVING
EASTWARD.- WEAKENING HIGH 1033 NEAR 36S/57E._ BUILDING HIGH 1036 NEAR 43S/28E, RATHER RAPIDLY MOVING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/10/04 AT 0600UTC TO 26/10/05 AT 0600UTC
WAM (30S/40S, 50E/65E)
SLIGHT FRONTAL RAIN AND SHOWERS SOON OVER SOUTHERN. FEW SHOWERS
ELSEWHERE.
WIND: ANTICLOCKWISE 3/4 BUT S 5/6 WITH GUSTS OVER FAR NORTH-EASTERN.
BECOMING SOON S 5/6 WITH GUSTS OVER SOUTHERN HALF.
SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER FAR SOUTH-EASTERN AT END
BY SW SWELL 3 TO 4M.
VIS : MODERATE IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS AND SQUALLS AT TIMES THUNDERY OVER NORTHERN. SLIGHT FRONTAL RAIN AND SHOWERS OVER FAR SOUTHERN AT END.
WIND: CLOCKWISE 5/6 OVER NORTHERN AT TIMES 7 WITH GUSTS, BUT VARIABLE 2/3
OVER SOUTHERN.INCREASING SOON OVER SOUTHERN HALF, W 4/5 AHEAD OF THE
FRONT THEN S 5/6 BEHIND AT TIMES 7. GUSTS.
SEA : ROUGH, BECOMING VERY ROUGH OVER FAR SOUTHERN AT END BY SW SWELL 3 TO
4M.
VIS : POOR OR VERY POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS. SNOWY SHOWERS OVER SOUTHERN BEHIND.
WIND: NW 5/6 AHEAD OF THE FRONT AT TIMES 7, BACKING SW BEHIND AND INCREASING
7/8. GUSTS. BECOMING ANTICLOCKWISE 3/4 LATER OVER WESTERN AT TIMES
5.
SEA : VERY ROUGH TO HIGH OVER SOUTH-EASTERN, BUT ROUGH TO VERY ROUGH OVER
NORTH-WESTERN. LONG SW SWELL 4 TO 5M OVER SOUTH-EASTERN AT FIRST,
ABATING, THEN A NEW SW SWELL 4 TO 5M SPREADING LATER FROM SOUTH-
WEST.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS AT FIRST FROM WEST. SHOWERS BEHIND.
WIND: INCREASING NW 5/6 AHEAD OF THE FRONT BUT INCREASING 7/8 IN THE
VICINITY OF THE FRONT, BACKING SW 7/8 BEHIND. GUSTS.
SEA : VERY ROUGH TO HIGH, BUT ROUGH OVER FAR NORTHERN AT FIRST. LONG SW
SWELL, 3 TO 5M OVER NORTHERN BUT 5 TO 7M OVER SOUTHERN DRIFTING AWAY
GRADUALLY EASTWARD. NEW SW SWELL 4 TO 5M OVER WESTERN AT
END.
VIS : POOR IN PRECIPITATION.