WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
06TH OF DECEMBER 2025 AT 13:30 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 062200 TO 072200 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-west, drifting to the south-
east by mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1024 hPa 35s04e.
Low 988 hPa 54s34e.
1. Cold Front : 44s39e 49s41e 55s32e into 54s34e.
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 10 in the east.
VIS : Good, but moderate in showers and thundershowers in the extreme
east until mid-period.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to E 10 to 20, but Anticyclonic 05 to 15 in the south.
VIS : Good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 reaching 30 in the south-east, but variable 05
to 10 in the north-east by mid-period.
VIS : Good.
SEA STATE: 3.0m in the south-east, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the north-east, spreading to the west by
the end of the period, otherwise N to NW 10 to 20 reaching 25 in
the south until mid-period.
VIS : Good, but moderate in showers and rain in the west and south,
clearing in the south-west by mid-period.
SEA STATE: 3.0m in the south, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 reaching 25 in the north-east, otherwise
anticyclonic 05 to 15, but NW 15 to 25 in the south, spreading to
the central parts from mid-period.
VIS : Good, but moderate in rain and showers in south-west from mid-
period.
SEA STATE: 3.0 to 3.5m except in the north-west, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 15 to 25 in the north-east, otherwise W to SW 15 to 25,
but Anticyclonic 05 to 10 in the west, spreading to the central
parts from mid-period.
VIS : Good, but moderate in showers and thundershowers in the east
until mid-period.
SEA STATE: 3.0 to 3.5m except in the north-east, with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NW 10 to 20 in the south-east until mid-period, otherwise S to SE
05 to 15, becoming NE 10 to 20 in the extreme south-west from
mid-period.
VIS : Good, but moderate in showers and thundershowers in the west and
in the north-east, clearing from mid-period.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15, reaching 20 in the south-east.
VIS : Good, but moderate in showers and thundershowers in places in the
north.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : NE to E 05 to 15, but SE 05 to 15 in the extreme north.
VIS : Moderate in showers and thundershowers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25 reaching 30 in places, but 35 in the south-west,
drifting to the south-east by mid-period.
VIS : Good, but moderate in showers and rain in the east and south-
west.
SEA STATE: 3.0 to 4.0m reaching 5.0 to 5.5m in the south, 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)
2025/12/06 AT 0400UTC
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, 25/12/06 AT 0000UTC
- HIGH 1023 HPA NEAR 32S/59E EXPECTED 1024 HPA NEAR 33S/71E AT THE END.
- STATIONARY FRONT OVER NORTHEASTERN AMS IN THE DAYTIME.
- DISTURBANCE OVER CRO MOVING EASTWARD AND REACHING KER IN THE EVENING.
PART 3: FORECAST FOR 24 HOURS FROM 25/12/06 AT 0600UTC TO 25/12/07 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS AND RAIN OVER THE FAR SOUTH-WESTERN AT THE END.
WIND: VARIABLE ANTICLOCKWISE 2/4 OVER NORTHERN AND NORTH-WESTERLY 4/5 OVER
SOUTHERN, REACHING 6/7 IN THE FAR SOUTHERN.
SEA : MODERATE TO ROUGH.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
RAIN OR FRONTAL SHOWERS IN THE NORTHEAST.
WIND: VARIABLE ANTICLOCKWISE 2/4 OVER NORTHERN AND W 5/6 OVER SOUTHERN.
SEA : MODERATE TO ROUGH. SW SWELL 2 TO 3M.
VIS : POOR TO VERY POOR UNDER PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS WITH THE DISTURBANCE.
WIND: WESTERLY 5/6, INCREASING SOON BY WESTERN NORTH-WESTERLY 6/7 WITH
SEVERE GUSTS BACKING BEHIND WESTERLY 4/5.
SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH. WESTERLY SWELL 2 TO 3M.
VIS : POOR TO VERY POOR DURING PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS WITH THE DISTURBANCE LATER.
WIND: WESTERLY 6 TO 7 WITH SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH. WESTERLY SWELL 2 TO 4M.
VIS : POOR TO VERY POOR UNDER PRECIPITATION.