WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
11TH OF APRIL 2026 AT 16:45 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 112200 TO 122200 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. TRISTAN: W to SW 35 in the south-west from mid-period
SYNOPTIC CHART 12:00Z
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High 1022 hPa 31s02w, High 1020 41s19e, High 1024 hPa 32s62e
Low 994 hPa 43s12w, Low 1005 hPa 42s47e
Cold front: 28s18w, 33s12w, 40s09w into 43s12w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 in the south, otherwise variable 05 to 10.
VIS : Good, becoming moderate in showers and thundershowers in the
extreme north.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south, otherwise S to SE 05 to 15.
VIS : Good but moderate in showers and thundershowers over the
central west and the south-west.
SEA STATE: 3.0 to 3.5m in the south-west, subsiding from mid-period, with
S to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 in the north-east, otherwise variable 05 to
10.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 15 to 25 in the southern-half, reaching 30 to 35 in
the south-west from mid-period, otherwise N to NW 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers in
the south from mid-period.
SEA STATE: 3.0 to 4.0m in the western-half reaching 5.0 to 6.0m in the
southern parts towards the end of the period, with W to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the north-west, otherwise W to NW 15
to 25, reaching 3o in the south-west towards the end of the
period, but S to SE 10 to 20 in the north-east.
VIS : Good, but moderate to poor in showers and thundershowers over
South-western parts at first.
SEA STATE: 3.0 to 4.0m in the extreme south-west spreading to the south-
east from mid-period.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 15 in the west spreading to the east from mid-
period, otherwise S to SW 10 to 20.
VIS : Good, but moderate to poor in showers and thundershowers in
the north-east and the extreme eastern parts.
SEA STATE: 3.0m in the extreme south-east at first, with W to SW swell
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the west, otherwise NE to E 05 to 15, but
N to NW 05 to 15 in the extreme south-west and south.
VIS : Good, but moderate in showers and rain in the extreme eastern
parts from mid-period.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 over the central parts, otherwise E to SE 10
to 15.
VIS : Good, but moderate in showers and thundershowers in the
extreme north-west at times.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 but NE 05 to 15 in the south.
VIS : Good, but moderate in showers and thundershowers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north-west, W to NW 15 to 25 in
the southern parts, otherwise S to SW 10 to 20, reaching 25 to
30 in the north-east.
VIS : Good, but moderate in showers and thundershowers in the south.
SEA STATE: 3.0 to 4.0m in the southern half, reaching 5.0 to 6.0m in the
extreme south and 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)
26/04/11 AT 1400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
Gale force 8 expected over CRO then over KER later.
PART 2: GENERAL SYNOPSIS, 26/04/11 AT 1200UTC
Deepening Low 1004 near 41S/43E, rapidly moving east-south-eastward.
High 1024 over WAM and AMS moving eastward.
PART 3: FORECAST FOR 24 HOURS FROM 26/04/11 at 1800UTC to 26/04/12 at 1800UTC
WAM (30S/40S, 50E/65E)
Rain and frontal showers by southwestern.
WIND: Anticlockwise 3/4 over northern and NW 5 to 6 locally 7 by south-
western decreasing 3/4 at the end by western.
SEA: Moderate over northern, rough over southern.
VIS: Poor in precipitation.
AMS (30S/40S, 65E/80E)
Scattered rain showers.
WIND: Anticlockwise 2/4 increasing NW 5/6 over southern later.
SEA: Rough, very rough over southern at first by SW swell 3 to 4 m abating.
VIS: Good.
CRO (40S/50S, 50E/65E)
Rain, showers and squalls over northern.
WIND: Over northern, clockwise 5 to 6 locally 7 by north-western, at times 8
with gusts later over eastern. Over southern W 3/4 then SW 5/6 later.
SEA: Moderate to rough locally very rough over north-eastern later. SW
swell 3 to 4 m abating.
VIS: Poor to very poor in precipitation.
KER (40S/50S, 65E/80E)
Showers and squalls, rain over western at end.
WIND: W 4 to 6 from West to East becoming clockwise over Northern 5 to 7
locally 8 with gusts later by North-Western.
SEA: Rough to very rough. W swell 3 to 5 m decreasing over southern.
VIS: Poor to very poor in precipitation.