WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
23RD OF NOVEMBER 2025 AT 16:45 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 232200 TO 242200 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. TRADES: S to SE 35 in the south-east until towards mid-period, and
again towards the end of the period.
2. DURBAN EAST: Cyclonic 35 to 45 in the west, moderating towards the end
of the period.
3. MARION FORTIES EAST: W to SW 35 in the south-east until mid-period,
but NW 35 to 40 in the west towards the end of
the period.
SYNOPTIC CHART 12:00Z
=====================
High 1027 hPa 33s02e, High 1017 hPa 34s50e
Low 975 hPa 52s00w, Low 968 hPa 58s22e
1. Cold Front: 36s16w 40s09w 45s01e into 52s00w
2. Cold Front: 40s31e 45s40e 50s41e into 58s22e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : Variable 05 to 10 in the east, otherwise S to SE 05 to 15
reaching 20 in the south at first.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 10 to 20, but NE to N 05 to 15 in the south-west.
VIS : Good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 reaching 30 in the north-east at first, but
35 in the south-east until towards mid-period and again
towards the end of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east, with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the north-east, otherwise N to NW 10
to 20 reaching 25 to 30 in the south. It will become S to SW
10 to 20 in the south-west towards mid-period.
VIS : Good, but moderate to poor in showers and rain in the west,
drifting to the south-east towards the end of the period.
SEA STATE: 3.0 to 3.5m in the south, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the west, otherwise S to SE 10 to 20
reaching 25 to 30 in the north-east, but S to SW 15 to 25 in
the south-east and W to NW 15 to 25 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the north-east and south-east, with S to SW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 05 to 15 in the north-west at first but SW 05 to 15 in
the south, otherwise variable 05 to 10, but W to NW 10 to 20
in the south-east.
VIS : Good, but moderate in rain and thundershowers in the west,
drifting to the south-east towards mid-period.
SEA STATE: 3.0 to 4.0m in the east at first, but in the extreme south-
west towards mid-period, with SW to S swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SE 15 to 25 in the south-west until mid-period, otherwise
E to NE 10 to 20 but cyclonic 35 to 45 in the west, where it
will moderate to 20 to 30 towards the end of the period.
VIS : Good, but poor to very poor in showers and thundershowers in
the west and south-west, drifting to the central western parts
towards the end of the period while moderating.
SEA STATE: 3.0 to 4.0m in the west but in the south-east at first, with
SW to S swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10, but E to NE 10 to 20 in the west, reaching
25 to 30 in the south-west, where it will become S to SW 15 to
25 towards mid-period.
VIS : Good.
SEA STATE: 3.0m in the south until mid-period, with S to SW swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to NE 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers in
places in the central and western parts.
SEA STATE: 3.0 to 3.5m in the south, with S to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the south-east until
mid-period. It will become NW 30 to 40 in the west towards the
end of the period.
VIS : Good, but moderate in showers and rain in the east at first,
but in the west and south-west towards mid-period, spreading
to the east towards the end of the period.
SEA STATE: 3.5 to 4.5m but 5.0 to 6.0m in the south, with W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
25/11/23 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE RUNNING OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 25/11/23 AT 1200UTC
- LOW 942 NEAR 55S/68E, SLOWLY MOVING SOUTHWARD. COLD FRONT CF
29S/61E, 39S/78E, 50S/83E, 57S/77E.
- LOW 968 NEAR 58S/22E WITH COLD FRONT CG EXPECTED IN CRO SOON.
PART 3: FORECAST FOR 24 HOURS FROM 25/11/23 AT 1800UTC TO 25/11/24
AT 1800UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS.
WIND : WESTERLY 5/6 OVER SOUTHERLY AND CLOCKWISE 2/4 OVER NOTHERLY.
SEA : VERY ROUGH TO HIGH BECOMING ROUGH BY THE WEST AT FIRST. SW SWELL
4 TO 6 M ABATING 4 TO 6 M OVER WESTERN.
VISI : GOOD.
AMS (30S/40S, 65E/80E)
RAIN (CF) AND SHOWERS.
WIND : WESTERLY 6/7 DECREASING 4/5 OVER SOUTHERN AND BECOMING
ANTICLOCKWISE 2/4 OVER NORTHERN.
SEA : VERY ROUGH TO HIGH. LONG SW SWELL INCREASING 4 TO 6.
VISI : POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
SHOWERS AND SQUALLS AT FIRST, RAIN OVER SOUTH-WESTERN SOON (CG)
WIND : WESTERLY 7/8. SEVERE GUSTS. THEN WESTERLY 5/6 OVER NORTHERN AT
END.
SEA : VERY ROUGH TO HIGH. W TO SW SWELL 3 TO 5 M LOCALLY 5 TO 6 M OVER
FAR NORTHERN ABATING 2 TO 3 M OVER WESTERN LATER.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
SHOWERS AND SQUALLS.
WIND : WESTERLY 7/8. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH. LONG W OR NW SWELL 4 TO 6 M.
VISI : VERY POOR IN PRECIPITATIONS.=