WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
27th OF MARCH 2026 AT 18:00 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 272200 TO 282200 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 : SW to W 35 in the south-eastern parts at first.
2. CAPE EAST : NW to N 35 in the west moderating from mid-period.
3. MARION FORTIES EAST : NE to N 35 over the central parts towards the
end of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1024 hPa 45s33e,
Low 999 hPa 41s12e
1. Cold front: 28s03w 31s12e 38s18e 42s11e 39s12e into 41s11e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : variable in the north-west, otherwise S to SE 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable in the south, otherwise E to SE 05 to 15.
VIS : Good, but moderate in the south-east.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south-west, but S to SE 10 to 20.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : S to SW 15 to 25 , reaching 30 in the south-east, but NW 10 to
20 in the north-east.
VIS : Good, but moderate in band of showers and rain over the north-
west to south-east.
SEA STATE: 3.0 to 3.5m in the south-west from mid-period, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 10 in the western half, otherwise SW to W 15 to
25, reaching 30 to 35 in the south-eastern parts at first.
VIS : Good, but moderate to poor in showers and rain in the south-
east at first, but in the south-west by the end of the period.
SEA STATE: 3.0 to 4.0m except in the north, reaching 5.0 to 5.5m in the
east, with SW to W swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 10 in the north-east at first, otherwise NE to
E 15 to 25, but NW to N 25 to 35 in the west moderating from
mid-period.
VIS : Good, but moderate to poor in showers and rain in the west,
spreading and becoming poor in thundershowers over the central
parts.
SEA STATE: 3.0 to 3.5m with SW swell over the central parts, reaching 4.5
to 5.5m in the west with SW to W swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 in the east, otherwise N to NE 05 to 15
reaching 20 to 25 in the south-west.
VIS : Good, but moderate in showers and rain at times in the north-
east but poor in the south-west towards the end of the period.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10, but S to SE 05 to 15 in the south.
VIS : Good, but moderate in showers and thundershowers at times in
the north.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 15, but variable 05 to 10 in the south.
VIS : Good over the central parts, otherwise moderate in showers and
thundershowers.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 over the central parts, drifting to the
east from mid-period, otherwise NE to N 15 to 25, spreading to
the central parts while reaching 30 to 35 towards the end of
the period.
VIS : Good, but moderate to poor in showers and thundershowers from
mid-period.
SEA STATE: 3.0 to 4.0m, but 5.0 to 6.0m in the south-east, with W to SW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/03/27 AT 1800UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Gale continuing or expected over CRO and KER.
PART 2: GENERAL SYNOPSIS, 26/03/27 AT 1200UTC
- Low 996 near 62S/54E, associated to cold front over CRO and moving rather quickly eastwards.
- Shallow thundery low area over AMS, gradually deepening.
- High 1036 near 46S/79E, moving rather quickly eastwards.
- Another high expected soon 1029 over west of CRO.
PART 3: FORECAST FOR 24 HOURS FROM 26/03/27 at 1800UTC to 26/03/28 at 1800UTC
WAM (30S/40S, 50E/65E)
Rain or showers.
WIND : Southeasterly 4 or 5, locally Variable 1 to 3 in far south and
Northwest 4 or 5 ahead the front.
SEA : moderate or rough.
VIS : poor in precipitation.
AMS (30S/40S, 65E/80E)
Thundery rain or showers.
WIND : Clockwise 4 to 6 from north, increasing at times 7 later.
Gusts.
SEA : moderate or rough, crossed.
VIS : poor in precipitation.
CRO (40S/50S, 50E/65E)
Frontal rain or showers.
WIND : Northwest 7 or 8 with severe gusts, backing Southwest behind
the front, decreasing soon Anticlockwise 3 to 5 from west.
SEA : moderate to very rough from north to south. SW swell increasing
4 or 5 m in south.
VIS : poor in precipitation.
KER (40S/50S, 65E/80E)
Frontal rain or showers from west.
WIND : Anticlockwise 3 to 5, increasing Noth 5 to 7 from north to
south, at times 8, decreasing soon 4 or 5 while backing
Southwest behind the front, becoming Anticlockwise 3 to 5 in
west at end. Severe gusts.
SEA : moderate or rough, locally very rough in far southwest with W
swell incrasing 3 or 4 m.
VIS : poor in precipitation.