WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF JANUARY 2026 AT 17:00 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 102200 TO 112200 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. MARION FORTIES EAST: W to NW 35 in the south.
SYNOPTIC CHART 12:00Z
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High 1022 hPa 29s10w, High 1025 hPa 38s36e
Low 955 hPa 57s15e, Low 961 hPa 60s57e
1. Cold Front: 32s23w 35s12w 40s00w 45s16e 50s28e into 57s15e
2. Cold Front: 33s42e 35s50e 40s56e 45s62e 50s65e 55s68e into 60s57e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15 reaching 20 in the south-west.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but SW 05 to 10 in the east.
VIS : Good, becoming moderate in showers and thundershowers in the
north-east towards mid-period.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the south-west, otherwise E to SE 10 to
20.
VIS : Good, but moderate in light rain in the west until mid-period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, but SW 10 to 20 in the extreme east towards
mid-period.
VIS : Good.
SEA STATE: 3.0m in the south-east at first, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 15 to 25 in the east until mid-period, otherwise W to SW 10 to
20 reaching 25 in the south-west towards the end of the period,
while becoming anticyclonic 05 to 15 in the north-west.
VIS : Moderate in showers and rain in places, becoming good from the
west by mid-period.
SEA STATE: 3.0m in the south, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the central parts, otherwise S to SE 10
to 20 reaching 25 to 30 in the east until mid-period, but W to NW
05 to 15 in the extreme north-east, reaching 20 to 25 in the
south and south-west. It will become SW 10 to 20 in the south-
west towards the end of the period.
VIS : Good, but moderate to poor in showers and rain in the south-west.
SEA STATE: 3.0m in the north-east, but in the south towards mid-period, with
S to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the south-east, otherwise E to NE 10 to
20 reaching 25 to 30 in the north-west, but SE 10 to 20 in the
west.
VIS : Good, becoming moderate in showers and thundershowers in the
south-west from mid-period.
SEA STATE: 3.0 to 3.5m, reaching 4.0m in the south, with SW swell but with E
to NE swell in the north-west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE 15 to 25 in the north-west at first, otherwise E to NE 10 to
20 reaching 25 to 30 in the north and south-west.
VIS : Moderate to poor in showers and thundershowers in places,
becoming good from the south by mid-period.
SEA STATE: 3.0 to 3.5m in the north and west with S to SE swell, but 3.0 to
4.0m in the south-west with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the north and east, otherwise E to NE 10
to 20 reaching 25 to 30 in the west and south-west at first,
but SE to E 20 to 30 in the south.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west and north-east.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20.
VIS : Moderate in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 20 to 30 reaching 35 in the south.
VIS : Good, but moderate in showers and rain in the southern parts.
SEA STATE: 4.0 to 5.0m, reaching 5.5 to 6.0m in the south until mid-period,
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)
26/01/10 AT 1600UTC
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, 26/01/10 AT 1200UTC
- High 1026 hPa near 41S/81E, moving eastward rapidly.
- High 1025 hPa near 38S/36E moving eastward and expected over southern WAM at end.
- Between the two cells, cold front over WAM and CRO moving eastward 20/25 kt.
PART 3: FORECAST FOR 24 HOURS FROM 26/01/10 at 1800UTC to 26/01/11 at 1800UTC
WAM (30S/40S, 50E/65E)
Frontal showers. Squalls.
WIND: locally S 5 at first and becoming anticlockwise 2 to 4 . Gusts.
SEA : moderate to rough. South-West swell 2 to 3 m.
VISI: poor in precipitation.
AMS (30S/40S, 65E/80E)
Scattered showers.
WIND: Variable 2/4.
SEA : rough becoming moderate later. SW swell 2 to 3 m.
VISI: poor in precipitation.
CRO (40S/50S, 50E/65E)
Frontal showers over eastern at first.
WIND: W 3 to 5 in north, 6 to 7 in south.
SEA : rough to very rough from north to south, high over far southern at time. W swell 2 to 4 m locally 4 to 5 m over southern.
VISI: very poor in precipitation.
KER (40S/50S, 65E/80E)
Frontal showers.
WIND: NW 5/6 , 7 at times ahead the front backing W 4 to 6 behind.
SEA : rough to very rough over southern. W swell 3 to 4 m.
VISI: very poor in precipitation.