WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
04th OF SEPTEMBER 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 041000 TO 051000 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. CAPE WEST: S to SE 35 in the north-east.
2. CAPE EAST: S to SW 35 to 40 in the central-east spreading to the
north-east by mid-period.
3. DURBAN EAST: SE to S 35 to 40 in the central-west spreading to the
southern half by mid-period while moderating by end of
period.
4. MARION FORTIES EAST: SW to W 35 to 40 in the south while spreading
eastwards it will reach 45 in the south-east by
mid-period becoming NW to W 35 in the central-
west by end of period.
SYNOPTIC CHART 06:00Z
=====================
High 1038 hPa 41s06e.
Low 1014 hPa 29s35e, Low 990 hPa 44s60e, Low 953 hPa 57s00e
1. Cold Front: 34s14e 36s46e 39s52e 42s57e into 44s60e.
2. Cold Front: 34s13w 40s06w 46s04w 53s11e into 57s00e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good, but moderate in showers.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 15 in the extreme east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 15 to 25 but NE 05 to 15 in the west, becoming N to NW
05 to 15 extreme south-west.
VIS : Moderate in showers but poor in rain in the south-west.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 20 to 30 reaching 35 in the south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south, reaching 4.5 to 5.0m in the south-
east, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NE 05 to 15 in the north, otherwise N to NW 15 to 25 reaching
30 in the south-west towards end of the period.
VIS : Good but moderate to poor in showers and rain in the north-
west and central parts.
SEA STATE: 3.5 to 4.5m in the west, while spreading to the east it will
reach 5.0m in the south-west at first, with SW swell, but NW
in the south-west.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 20 to 30 reaching 35 in the north-east, but NW 05 to
15 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the north, reaching 4.5 to 5.0m in the north-
east, becoming 3.0m in the west from mid-period, with S to SE
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 20 to 30 in the east, otherwise S to SW 20 to 30,
reaching 35 to 40 in the central-east spreading to the north-
east by mid-period, but E to SE 15 to 25 in the west.
VIS : Good, but moderate to poor in showers and thundershowers in
the east until mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the north-west until mid-
period when it will become and 5.0 to 6.0m in the south-east
with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 15 to 25, but SE to S 20 to 30 west, reaching 35 to 40
in the central-west spreading to the southern half by mid-
period while moderating to 10 to 20 it will become NE 05 to 15
in the extreme south-west by end period.
VIS : Good, but moderate in showers and thundershowers in the
extreme west but in the south-east from mid-period spreading
to the north-east by end of period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the west, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NE 15 to 25, becoming S to SE 05 to 15 in the south-east from
mid-period spreading to the central parts by end of period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20, but NE 10 to 20 in the south.
VIS : Good, but moderate in scattered showers in the north.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW to W 20 to 30 reaching 35 to 40 in the south while
spreading eastwards it will reach 45 in the south-east by mid-
Period becoming NW to W 20 to 30 reaching 35 in the central-
west by end of period.
VIS : Moderate in rain and showers, but in rain and snow-showers in
the south.
SEA STATE: 4.0 to 5.0m, but 5.5 to 6.5m in the south reaching 7.0 to 8.0m
in the extreme south, while spreading eastwards it will reach
8.5 to 9.0 in south-east from mid-period subsiding by end of
period, with W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/04 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OR SEVERE GALE CONTINUING OVER CRO AND KER.- GALE OR SEVERE
GALE EXPECTED OVER WAM LATER.- GALE EXPECTED OVER AMS AT END.
PART 2: GENERAL SYNOPSIS, 26/09/04 AT 0000UTC
- LOW 1003 NEAR 41S/52E, MOVING SOUTHEASTWARD, EXPECTED 984 NEAR
44S/64E AT 12 UTC THEN 970 NEAR 48S/77E AT 00UTC.- ASSOCIATED COLD
FRONT SPREADING OVER NW.- HIGH 1030 NEAR 30S/74E, SLOWLY MOVING
EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/04 AT 0600UTC TO 26/09/05 AT
0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS.
WIND : NW 4 OR 5 OVER NORTHEASTERN, 6 OR 7 OVER SOUTHWESTERN, SOON
INCREASING FROM WEST 6 OR 7 AHEAD THE FRONT, BACKING SW 6 OR 7
BEHIND, LOCALLY 8 OR 9 JUSTE BEHIND THE FRONT. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH, CROSSED IN THE VICINITY OF THE FRONT. LONG SW
SWELL AROUND 3 METERS, DECREASING.
VIS : POOR OR VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND : ANTICLOCKWISE 3 OR 4 BUT N 5 OR 6 OVER FAR SOUTHWESTERN, SOON
INCREASING FROM WEST NW 5 OR 6, LOCALLY 7 OVER SOUTHERN, THEN 7 OR
8 BEHIND THE FRONT AT END. SEVERE GUSTS.
SEA : MODERATE OR ROUGH, BUT VERY ROUGH OVER FAR SOUTHERN, BECOMING
ROUGH OR VERY ROUGH LATER. LONG SW SWELL 3 OR 4 METERS OVER
SOUTHERN.
VIS : MODERATE IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS. SNOWY SHOWERS BEHIND THE
FRONT.
WIND : NW 7 OR 8, VERY LOCALLY 9, AHEAD THE FRONT, BACKING SW 4 OR 5
BEHIND, BUT W 5 OR 6 OVER SOUTHERN, INCREASING W OR SW 6 OR 7,
THEN 7 OR 8 LATER, LOCALLY 9 AT END. VIOLENT GUSTS.
SEA : ROUGH TO VERY ROUGH, BECOMING HIGH AT END. LONG SW SWELL 3 TO 5M
FROM NORTH TO SOUTH, DECREASING AT END.
VIS : POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SHOWERS, SNOWY OVER SOUTHERN, THEN FRONTAL RAIN, SHOWERS AND SQUALLS
SOON.
WIND: W 6 OR 7, LOCALLY 8, OVER EASTERN, NW 5 OR 6 OVER WESTERN,
SOON INCREASING NW 7 OR 8, LOCALLY 9, OVER NORTHERN, BACKING SW 5
OR 6 BEHIND THE FRONT LATER. VIOLENT GUSTS.
SEA : VERY ROUGH TO HIGH. LONG SW SWELL 5 TO 6 METERS, DECREASING 3 OR 4
METERS AT END.
VIS : POOR OR VERY POOR IN PRECIPITATION.