WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10th 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 101000 TO 111000 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 : W to SW 35 in the south and south-west.
2. CAPE WEST: W to NW 35 in the southern parts during the first half of
the period.
3. CAPE EAST: N to NW 35 in the south-west by mid-period.
4. MARION FORTIES EAST: W to SW 35 in the southern parts until
tomorrow morning, but N to NW 35 in the south-
west by the end of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1022 hPa 23s08w, High 1025 hPa 32s40e.
Low 995 hPa 43s03e, Low 949 hPa 64s43e.
1. Cold Front: 28s11w 32s04w 36s02e 41s06e into 43s03e.
2. Cold Front: 38s45e 41s51e 44s56e 49s60e 55s61e 60s57e 64s50e into
64s43e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but W to SW 05 to 15 in the extreme east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 15, but S to SW 05 to 15 in the south
reaching 20 to 25 from mid-period.
VIS : Good becoming moderate in rain and showers in the south and
south-east from mid-period.
SEA STATE: 3.0m in the south from tomorrow morning, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W to NW 15 to 25 in the extreme south-west, but anti-cyclonic
05 to 15 in the west and southern parts, otherwise S to SE 05
to 15 reaching 25 in the south-east until tomorrow morning.
VIS : Good becoming moderate in showers and rain in the south-west
from mid-period.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 15 to 25 reaching 30 to 35 in the south and south-west.
VIS : Good but moderate in showers and rain in the central and
southern parts spreading to the north and east from the
evening.
SEA STATE: 3.0 to 3.5m in the east and southern parts, reaching 4.0 to
4.5m in the south-west spreading to the south from mid-period,
becoming 5.0 to 5.5m in the south from the morning, with SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anti-cyclonic 05 to 15 in the north and north-east, otherwise
W to NW 15 to 25 reaching 30 to 35 in the southern parts
during the first half of the period.
VIS : Good but moderate in rain and showers in the central and
southern parts, spreading to the south-east from the evening
while clearing in the central and south. It will become
moderate to poor in showers and rain in the west from tomorrow
morning.
SEA STATE: 3.0 to 4.0m in the central and southern parts reaching 4.5m in
the south at first, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15 but E to NE 15 to 25 in the north-
west from late afternoon, spreading to the central and
southern parts from tomorrow morning, becoming N to NW 15 to
25 in the south-west from the evening reaching 30 to 35 by
mid-period.
VIS : Good becoming moderate in showers and rain in the south-west
from the evening.
SEA STATE: 3.0 to 4.0m (except in the east and north-east) with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the west and south-west reaching 25 to 30
from the evening, otherwise E to SE 05 to 15 becoming 20 to 30
in the north from this afternoon.
VIS : Good.
SEA STATE: 3.0m in the east until mid-period as well as south-west from
tomorrow morning, with S swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, reaching 25 to 30 in the south-east.
VIS : Good becoming moderate in showers and thundershowers over the
north-east from the evening until tomorrow morning.
SEA STATE: 3.0 to 3.5m in the south-east from the evening, with S to SE
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise E to SE 10 to 20,
reaching 25 in the north-east from the evening.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the southern parts until
tomorrow morning, becoming N to NW 15 to 25 in the west from
tomorrow morning reaching 30 to 35 in the south-west by the
end of the period.
VIS : Good but moderate in rain and snow-showers in the southern
parts until tomorrow morning.
SEA STATE: 3.0 to 4.0m reaching 5.0 to 7.0m 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)
26/10/10 AT 0500UTC
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, 26/10/10 AT 0000UTC
- COLD FRONT OVER CRO, MOVING EASTWARD, THEN MOVING OVER KER AT FIRST AND WAM LATER.- HIGH 1033 NEAR 43S/82E, SLOWLY MOVING EASTWARD. ASSOCIATED RIDGE SPREADING OVER AMS.
PART 3: FORECAST FOR 24 HOURS FROM 26/10/10 AT 0600UTC TO 26/10/11 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS REACHING BY SOUTHWESTERN LATER.
WIND : OVER NORTHERN : ANTICLOCKWISE 3 OR 4 LOCALLY 5 OVER EASTERN AT
END.
OVER SOUTHERN : NW 4 OR 5, AT TIMES 6 OVER FAR SOUTHERN, BACKING
W THEN S 4 OR 5 BEHIND THE FRONT LATER.
SEA : MODERATE TO ROUGH.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS THEN FRONTAL RAIN AND SHOWERS REACHING BY SOUTHWESTERN AT END.
WIND : ANTICLOCKWISE 2 TO 4 THEN NW 5 TO 6 BY SOUTHWESTERN LATER.
SEA : MODERATE.
VIS : MAINLY GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS, BECOMING LESS NUMEROUS OVER WESTERN
LATER.
WIND : NW 5 OR 6, AT TIMES 7 AHEAD THE FRONT, BACKING W OR SW 5 OR 6 AT
TIMES 7 OVER FAR SOUTHERN BEHIND THE FRONT SOON. GUSTS.
SEA : ROUGH TO VERY ROUGH BECOMING HIGH OVER FAR SOUTHWESTERN AT END.
ARRIVAL OF A SW SWELL 3 TO 5 METERS OVER SOUTHWESTERN AT END.
VISI : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS OVER SOUTH-WESTERN MOVING
NORTHWESTWARD.
WIND : NW 5 OR 6, AT TIMES 7 WITH GUSTS, BUT ANTICLOCKWISE 2 TO 4 OVER
EASTERN AT FIRST, BACKING W 4 OR 5 LOCALLY 6 OVER FAR
SOUTHWESTERN BEHIND THE FRONT.
SEA : ROUGH TO VERY ROUGH, BUT VERY ROUGH DUE TO WIND OVER SOUTH-
WESTERN.
VIS : POOR IN PRECIPITATION.