WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
09TH 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 092200 TO 102200 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. ST HELENA: W to NW 35 in the south-west at first.
2. TRISTAN: Cyclonic 35 in the north-west drifting to the central, and
south-eastern parts by mid-period.
3. MARION FORTIES EAST: W to SW 35 to 45 in the extreme east and south-
east at first.
SYNOPTIC CHART 12:00Z
=====================
High 1021 hPa 28s0e, High 1029 hPa 45s27e
Low 1008 hPa 25s19e, Low 973 hPa 50s12w, Low 962 hPa 55s54e
1. Cold Front: 35s01w 44s02w 53s06e 52s09w into 50S12w
2. Cold Front: 39s37e 37s52e 48s63e 48s45e 57s60e into 55s54e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : Variable 05 to 10, but SE 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : W to NW 10 to 20, reaching 25 to 35 in the south-west at
first, but variable 05 to 10 in the north-east.
VIS : Good, but moderate to poor in showers and thundershowers in
the extreme south-west.
SEA STATE: 3.0 to 4.0m in the west, spreading to the north-east and
south-east by mid-period with SW swell, reaching 4.5 to 5.0m
in the south-west with NW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 05 to 15.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Variable 05 to 10 in the north-east and south-west at first,
otherwise NW to N 05 to 15, but cyclonic 25 to 35 in the
north-west drifting to the central, and south-eastern parts by
mid-period.
VIS : Moderate to poor in showers and thundershowers in the west
spreading to the central, and south-eastern parts towards mid-
period, otherwise good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the north-west at first
drifting to the central and south-eastern parts from mid-
period, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 05 to 10 over the central parts, otherwise variable 05
to 10, but NW to W 15 to 25 in the extreme west towards the
end of the period.
VIS : Good, but moderate in showers and rain in the south-west from
mid-period.
SEA STATE: 3.0 to 4.0m in the west, reaching 4.0 to 4.5m in the south
towards mid-period, with W to SW swell but NW in the north-
west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 15 to 25 in the west, otherwise W to SW 15 to 25, but
anticyclonic 05 to 10 over the eastern half from mid-period.
VIS : Good, but moderate in showers and rain in the south-west from
mid-period.
SEA STATE: 3.0 to 4.0m except over the west and central parts, reaching
4.5 to 5.5m in the extreme south-east at first, with S to SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 15 to 25 in the west, otherwise, S to SE 05 to 15,
reaching 25 in places in the north.
VIS : Good, but moderate in showers and thundershowers in the
east at times.
SEA STATE: 3.0 to 3.5m in the extreme south spreading to the east while
reaching 4.0 to 4.5m, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the north, otherwise S to SE 15 to 25.
VIS : Good, but moderate in showers and thundershowers in the north
at times.
SEA STATE: 3.0m in the extreme south-east by mid-period, with S to SE
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 05 to 15.
VIS : Moderate in showers and thundershowers at times.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic in the extreme north-west, otherwise W to SW 20
to 30, reaching 35 to 45 in the extreme east and south-east at
first. It will become W to NW 05 to 10 from mid-period.
VIS : Good in the north-west, otherwise moderate in showers and
rain, with snow-showers over the south-eastern parts until
mid-period.
SEA STATE: 4.0 to 5.0m, but 6.5 to 7.5m over the extreme eastern parts
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)
25/11/09 AT 1700UTC
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 WAM AND KER.
- STRONG GALE FORCE 9 OVER CRO.
PART 2: GENERAL SYNOPSIS, 25/11/09 AT 1200UTC
- COLD FRONT (CF) LEAVING AMS AT FIRST.
- LOW 961 HPA NEAR 55S/53E, ASSOCIATED WITH COLD FRONT (CF) AXIS
5S/43E, 35S/50E, 40S/60E, 45S/63E, 50S/65E, MOVING EASTWARD AT 25/30
KT.
PART 3: FORECAST FOR 24 HOURS FROM 25/11/09 AT 1800UTC TO 25/11/10
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN, SQUALLS AND FRONTAL SHOWERS UNDER CG.
WIND: NW 5 TO 7, LOCALLY 8 FROM NORTH TO SOUTH AHEAD OF FRONT,
BACKING SW 6/7 BEHIND, DECREASING SW TO S 4/5 OVER WESTERN AT END.
GUSTS ON SQUALLS.
SEA: ROUGH BECOMING VERY ROUGH TO HIGH. SW SWELL 2/3 M INCREASING 4/6
M.
VISI: POOR IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
RAIN, SQUALLS AND FRONTAL SHOWERS UNDER CG.
WIND: NW 4/5 INCREASING 6/7 AHEAD CG AND BACKING WESTERLY 5 TO 7 FROM
NORTH TO SOUTH BEHIND. GUSTS ON SQUALLS.
SEA: MODERATE TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL 2 TO 4 M.
VISI: POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
RAIN, SQUALLS AND FRONTAL SHOWERS UNDER CG, SHOWERS BEHIND FRONT.
WIND: WESTERLY 6/7 THEN SW 7 TO 9, DECREASING 6/7 OVER NORTHWESTERN
AT END. GUSTS.
SEA: VERY ROUGH TO HIGH, LOCALLY VERY HIGH OVER SOUTH-WESTERN.
WESTERLY SWELL 2 TO 4 M INCREASING 4 TO 6 M.
VISI: POOR TO VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
RAIN, SQUALLS AND FRONTAL SHOWERS UNDER CG.
WIND: W 5/6 VEERING QUICKLY NW 7/8 AHEAD CG AND BACKING WESTERLY 6 TO
8. GUSTS.
SEA: VERY ROUGH TO HIGH. WESTERLY SWELL 3 TO 5 M, INCREASING 6 M AT
END OVER WESTERN.
VISI: POOR TO VERY POOR IN PRECIPITATIONS.