WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
04TH OF DECEMBER 2025 AT 17:30 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 042200 TO 052200 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:
====================
NIL.
SYNOPTIC CHART 12:00Z
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High 1025 hPa 36s10w, High 1022 hPa 35s30e.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 15 in the east.
VIS : Good, but moderate at times in showers and thundershowers in the
extreme north-east until mid-period.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to E 10 to 20, but N to NE 05 to 15 in the south-west
spreading to the north-west from mid-period.
VIS : Good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25, but variable 05 to 10 in the extreme north-east
until mid-period.
VIS : Good.
SEA STATE: 3.0m in the south-east towards the end of the period, with S to
SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NE to N 10 to 20 in the west, otherwise anticyclonic 05
to 15 drifting eastwards.
VIS : Good, but moderate in showers and rain in the north-west
spreading to the south-west towards the end of the period.
SEA STATE: 3.0m in the south subsiding in the south-west from mid-period,
with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 reaching 25 in the north-east, but SW to W 15 to
25 in the south. It will become anticyclonic 05 to 15 in the west
towards mid-period.
VIS : Good, but moderate in showers and rain in the south-east at
first.
SEA STATE: 3.0m in the south-east spreading over the southern parts from
mid-period, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 10 to 20 in the east, but NE to N 15 to 25 in the north-
west, otherwise NW to N 15 to 25 spreading over the western half
towards mid-period and to the east by the end of the period. It
will become SW 10 to 20 in the west towards mid-period.
VIS : Good, but moderate in showers and rain in the south-west in the
first half of the period and in the south-east in the second half
of the period.
SEA STATE: 3.0 to 4.0m in the east subsiding towards the end of the period,
reaching 4.5m in the south-east at first, with SW swell. It will
be 3.0 to 3.5m in the south-west towards mid-period, with SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SW 05 to 15 in the south-east until mid-period, otherwise S to SE
05 to 15 but NE to N 15 to 25 in the extreme west spreading to
the central parts by the end of the period.
VIS : Good, but moderate in showers and thundershowers in the extreme
north-east.
SEA STATE: 3.0 to 3.5m, except in the extreme north and west, spreading to
the north-east from mid-period, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : NE to N 05 to 10 in the north, otherwise SE to E 15 to 25.
VIS : Good, but moderate in showers and thundershowers in
places in the central and northern parts.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : NE to E 05 to 15, but SE 10 to 20 in the south-west.
VIS : Moderate in showers and thundershowers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 in the east, otherwise NW to N 20 to 30 spreading to
the east towards the end of the period. It will become cyclonic
20 to 30 in the south-west from mid-period.
VIS : Good, but moderate in showers and rain in the west drifting to
the east in the second half of the period.
SEA STATE: 3.0 to 4.0m in the north reaching 4.5m in the north-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) 25/12/04 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, 25/12/04 AT 1200UTC
- Low 968 near 53S/71E, moving south-eastward. Cold front 35S/65E, 40S/70E, 50S/78E.*
- High 1023 over WAM at end with a ridge toward CRO.
PART 3: FORECAST FOR 24 HOURS FROM 25/12/04 at 1800UTC to 25/12/05 at 1800UTC
WAM (30S/40S, 50E/65E)
Rain over north-eastern, showers and squalls over southern, at first.
WIND: W to SW 4/6 from north to south, becoming anticlockwise 2/4 at end.
SEA : moderate to rough over northern, rough to very rough over southern. SW
swell 3 to 5 m decreasing 2 to 4 m at end.
VISI: poor or very poor in precipitation becoming good.
AMS (30S/40S, 65E/80E)
Frontal rain.
WIND: Westerly 4/6.
SEA : moderate to rough, becoming very rough over far southern. WSW swell 2
to 4 m at end.
VISI: poor or very poor in precipitation.
CRO (40S/50S, 50E/65E)
Showers and squalls.
WIND: SW or W 4/6 locally 7 over north-eastern at first.
SEA : rough to very rough over northern, moderate to rough over southern. W
swell 3 to 4 m over northern.
VISI: poor or very poor in precipitation becoming good at end.
KER (40S/50S, 65E/80E)
Rain, showers and squalls.
WIND: Westerly 5/6 sometimes 7.
SEA : rough to very rough. W swell 2 to 4 m over northern.
VISI: poor or very poor in precipitation.