WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF JANUARY 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. MARION FORTIES EAST: W to SW 35 to 40 in the south-east, but NW 35 in the
south-west, spreading to the south-east by mid-
period.
SYNOPTIC CHART 06:00Z
=====================
High 1022 hPa 29s16w, High 1024 hPa 37s32e
Low 952 hPa 56s10e, Low 960 hPa 59s52e
1. Cold Front: 32s28w 35s12w 40s02w 45s11e 50s22e into 56s10e
2. Cold Front: 35s44e 40s54e 45s58e 50s61e 55s64e into 59s52e
AREA FORECAST:
==============
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 the end of the period.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south-west, otherwise E to SE 10 to 20.
VIS : Good, but moderate in light rain in the west.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, but SW 10 to 20 in the extreme east at first
and towards the end of the period.
VIS : Good.
SEA STATE: 3.0m in the south-east until mid-period, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 10 to 20 reaching 25 in the south-west, where it will
become SW 10 to 20 towards mid-period, spreading over the central
parts towards the end of the period.
VIS : Good, but moderate in showers and rain in the south and west,
drifting to the east towards the end of the period.
SEA STATE: 3.0m in the south, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 reaching 25 to 30 in the east, but W to NW 05 to
15 in the extreme east, reaching 20 to 25 in the south and south-
west.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 3.5m in the north-east, but in the south towards the end
of the 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.
VIS : Good, but moderate in showers and thundershowers in the north-
east at first.
SEA STATE: 3.0 to 3.5m, reaching 4.0m in the south, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE 15 to 25 in the north-west until mid-period, otherwise E to NE
10 to 20 reaching 25 to 30 in the north and extreme south-west
towards mid-period.
VIS : Moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0 to 3.5m in the north and west, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : SE 15 to 25 in the south, otherwise E to NE 10 to 20 reaching
25 to 30 in the west and south-west until mid-period, but
variable 05 to 10 in the north and east.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west.
SEA STATE: 3.0m in the south-west until mid-period, with E swell.
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 SW 15 to 25 reaching 30 to 40 in the south-east, but NW 20
to 30 in the west reaching 35 in the south-west, spreading to the
south-east by mid-period.
VIS : Good, but moderate in showers and rain in the south-west,
spreading to the south-east towards mid-period, until towards the
end of the period.
SEA STATE: 4.0 to 5.0m in the north, otherwise 6.0 to 7.0m, reaching 7.5 to
8.0m in the south-east at first, 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)
2026/01/10 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 2026/01/10 AT 0000UTC
- COLD FRONT 39S/46E, 43S/50E, 47S/53E, 50S/55E.
- HIGH OVER AMS AND NORTHERN KER.
PART 3: FORECAST FOR 24 HOURS FROM 2026/01/10 AT 0600UTC TO 2026/01/11 AT
0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS.
WIND: ANTICLOCKWISE 3 TO 5 SETTING-UP NORTH-WEST 4 TO 5 AHEAD THE FRONT OVER
SOUTH-WESTERN, BACKING SOUTHERLY 4 TO 5 BEHIND.
SEA : MODERATE TO ROUGH. SOUTH-WEST SWELL 2 TO 3 M DECREASING.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
ISOLATED SHOWERS.
WIND: VARIABLE 2/4.
SEA : ROUGH BECOMING MODERATE AT END. SW SWELL 2 TO 3 M.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS.
WIND: NW 7 TO 8 AHEAD THE FRONT, BACKING WESTERLY 7 TO 8 BEHIND THEN
DECREASING 6 TO 7 LATER. ANTICLOCKWISE 3 TO 4 BY NORTH-WESTERN AT END.
SEA : ROUGH TO VERY ROUGH OVER NORTHERN, VERY ROUGH TO HIGH OVER SOUTHERN. W
SWELL 2 TO 4 M LOCALLY 4 TO 5 M OVER SOUTHERN.
VIS : VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS.
WIND: SETTING-UP NW 7 TO 8 AHEAD THE FRONT BY WESTERN, BACKING WESTERLY 5 TO
7 BEHIND AT DAY END.
SEA : ROUGH LOCALLY VERY ROUGH OVER SOUTHERN. W SWELL 3 TO 4 M.
VIS : VERY POOR IN PRECIPITATION.