WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
12TH OF MARCH 2026 AT 16:30 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
NOTE: WX OBSERVATIONS.
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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 122200 TO 132200 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:
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1. CAPE EAST : NE 35 at times in the extreme north-west at first.
SYNOPTIC CHART 12:00Z
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High 1028 hPa 39s37e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to S 10 to 20.
VIS : Good.
SEA STATE: 3.0m in the south-west spreading to the north-west and south-east
from mid-period, with SW swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S 05 to 15, becoming variable 05 to 10 from mid-period.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : s to SE 05 to 15, reaching 20 to 25 in the extreme south-west and
central south.
VIS : Good, but moderate to poor in showers and thundershowers in the
extreme south-west.
SEA STATE: 3.0 to 3.5m, subsiding over the northern half from mid-period, with
SW to S swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 but variable 05 to 10 in the extreme north-east.
VIS : Good.
SEA STATE: 3.0m in the south-west spreading to the north-west and south-east
from mid-period, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Variable 05 to 10 in the extreme south-east and extreme north-east
until mid-period, otherwise S to SE 10 to 20 reaching 25 in places
over the extreme northern parts at times.
VIS : Good, but moderate to poor in showers and thundershowers in the
north-east.
SEA STATE: 3.0 to 3.5m, subsiding over the southern half towards mid-period,
with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15, becoming S to SE 15 to 25 in the north-east
and S to SW 15 to 25 in the south-east from mid-period.
VIS : Good, but moderate in showers and rain in the extreme south-west
at first.
SEA STATE: 3.0 to 3.5m, subsiding in the south-west towards the end of the
period, SW to W swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 15 to 25 in the east, but N to NE 15 to 25 in the west
reaching 30 to 35 at times in the extreme north-west at first,
otherwise anti-cyclonic 05 to 15 spreading to the east towards mid-
period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the extreme west and east, with SW to S swell in the
east but NE swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to NE 15 to 25 in the extreme west, reaching 30 at times in
places in the south-west, otherwise E to SE 15 to 25.
VIS : Good, but moderate in showers and thundershowers in the extreme
north-west.
SEA STATE: 3.0 to 3.5m, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 in the south, reaching 25 to 30 in the south-east at
first and towards the end of the period, otherwise N to NE 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers over the
northern and central parts.
SEA STATE: 3.0 to 3.5m in the south, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20.
VIS : Moderate in showers and thundershowers in places and at times.
SEA STATE: 3.0m in the extreme south, with S swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north until towards the end of the
period, otherwise NW to W 15 to 25 reaching 30 at times in the south
from mid-period.
VIS : Good, but moderate in showers and rain over the southern half.
SEA STATE: 3.0 to 4.0m, except in the north, with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/03/12 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Strong gale force expected over AMS.
Gale force 8 winds forecast over far northern of KER.
PART 2: GENERAL SYNOPSIS, 26/03/12 AT 1200UTC
- Low 1010 hPa near 37S/73E, almost stationary with a cold front CF axis 30S/65E, 34S/70E and 38S/75E.
- High 1027 over western of WAM and CRO, slowly moving eastward.
PART 3: FORECAST FOR 24 HOURS FROM 26/03/12 at 1800UTC to 26/03/13 at 1800UTC
WAM (30S/40S, 50E/65E)
Rare showers.
WIND : Southerly 4/5, increasing westerly 5/6 over northern area at the end of the forecast period.
SEA : Rough. South-westerly swell 2 to 3 m, subsiding.
VISIBILITY : Good, sometimes poor during precipitation.
AMS (30S/40S, 65E/80E)
Rain and showers with CF.
WIND : clockwise 4/6 locally south 7 to 9 over southern area at end of forecast period.
SEA : rough. South-westerly swell 2 to 4 m subsiding.
VISIBILITY : poor in precipitation.
CRO (40S/50S, 50E/65E)
Rare showers more frequent over far southern.
WIND : anticlockwise 3 to 5 increasing west 5/6 over southern areas.
SEA : rough. South-westerly swell 2 to 3 m subsiding.
VISIBILITY: good, locally poor in precipitation.
KER (40S/50S, 65E/80E)
Rain over far north-eastern, scattered showers elsewhere.
WIND : Southerly 4 to 6, increasing 7 to 8 at the end of the forecast period over northern. Over southern, westerly 5 to 7.
SEA : Rough. Westerly swell 2 to 3 m, subsiding.
VISIBILITY : Poor over far north-eastern, good elsewhere.