WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
16th OF SEPTEMBER 2026 AT 16:00 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 162200 TO 172200 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 east.
2. TRISTAN: NW to W 35 in the south-west drifting to the south-east from
mid-period.
3. CAPE WEST: SE to S 35 in the north-east.
4. DURBAN EAST: Cyclonic 35 in the south-west from mid-period.
5. MARION FORTIES EAST: SW 35 in the east until mid-period but W to NW 35
in places in the south.
SYNOPTIC CHART 12:00Z
=====================
High 1038 hPa 35s00e, High 1038 hPa 34s61e,
Low 995 hPa 45s24e, Low 999 hPa 52s35e, Low 1008 hPa 47s42e,
1. Cold Front: 35s30e 41s39e 46s43e 49s42e into 47s42e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 15 to 25.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 15 to 25 but cyclonic 05 to 15 in the south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south, with S to SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 15 to 25 but N to NW 15 to 25 in the south-west.
VIS : Good but moderate in showers and rain in places in the south-
west.
SEA STATE: 3.0 to 4.0m in the east from mid-period, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 20 to 30 reaching 35 in places in the east.
VIS : Good.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the east at first, otherwise
N to NE 15 to 25 reaching 30 but NW to W 20 to 30 in the west
spreading to the east from mid-period, reaching 35 in the
south-west drifting to the south-east from mid-period.
VIS : Good but moderate to poor in showers and rain in the west
spreading to the east from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in places in the south,
with SE swell but W to NW swell in the south.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 but SE to S 20 to 30 reaching 35 in the
north-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m except in the central parts, reaching 4.5 to 5.0m
in places in the north-east, with S to SW swell but SE swell
in the north-east.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 15 to 25 in the north-east at first, otherwise S to SE
15 to 25 reaching 30 in places but Anticyclonic 05 to 15 in
the west spreading to the south-east from mid-period.
VIS : Good in the south-west at first, otherwise moderate in showers
and rain.
SEA STATE: 3.0 to 4.0m, with S to SW swell but SE in the north.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 15 to 25 in the south-west reaching 30 to 35 from
mid-period, otherwise N to NE 15 to 25 reaching 30 in places
in the north-east.
VIS : Good but moderate to poor in showers and thundershowers in the
west spreading to the south-east by the end of the period.
SEA STATE: 3.5 to 4.5m in the south-west from mid-period, with S to SE
swell.
MOZAMBIQUE CHANNEL:
WIND : N to NE 10 to 20 but E to SE 10 to 20 in the east.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : SE 15 to 25 reaching 30 but E to NE 15 to 25 in the south.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m except in the south, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 20 to 30 reaching 35 in the east until mid-period otherwise
W to NW 20 to 30 reaching 35 in places in the south but
Anticyclonic 05 to 15 in the extreme north.
VIS : Moderate in rain and showers with possible snow-showers in the
south.
SEA STATE: 4.5 to 5.5m, reaching 6.0 to 7.0m in the south, with W to SW
swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/16 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- STRONG GALE FORCE 9 TO STORM FORCE 10 OVER SOUTHERN OF CRO AND KER
AREA.
PART 2: GENERAL SYNOPSIS, 26/09/16 AT 1200UTC
- LOW 1002 HPA NEAR 51S/47E WITH COLD FRONT CF ASSOCIATED AND AXIS
36S/33E, 37S/36E, 40S/39E, 45S/43E MOVING EASTWARD 20KT. - HIGH 1035
HPA NEAR 34S/62E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/16 AT 1800UTC TO 26/09/17
AT 1800UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS THEN FRONTAL RAIN AND SHOWERS UNDER CF BY
SOUTH-WESTERN AREA.WIND: ANTICLOCKWISE 3 TO 5 BECOMING NW 6 OR 7 WITH
GUSTS AHEAD CF.SEA: MODERATE TO ROUGH BY SW SWELL 2 TO 3 METERS OVER
EASTERN AREA AT BEGINNING THEN NW SWELL 3 TO 4 METERS.VISI: BECOMING
POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWER.WIND: BECOMING ANTICLOCKWISE 3 TO 5 BY WESTERN
AREA.SEA: ROUGH TO VERY ROUGH BECOMING MODERATE TO ROUGH BY WESTERN
AREA. SSW SWELL 3 TO 5 METERS DECREASING NEAR 2 TO 3 METERS AT
END.VISI: GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SHOWERS UNDER CF. SNOW SHOWERS OVER SOUTHERN
AREA.WIND: NW 6 OR 7 AT TIMES 8 AHEAD CF, INCREASING 8 TO 9 LOCALLY
10 BEHIND CF OVER SOUTHERN AREA. SEVERE GUSTS.SEA: ROUGH TO VERY
ROUGH. W TO NW SWELL 4 TO 5 METERS.VISI: POOR TO VERY POOR IN
PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS CF BY WESTERN AREA.WIND: NW 6 TO 7, AT TIMES
8 AHEAD CF BACKING 8 TO 9 LOCALLY 10 BEHIND CF OVER SOUTH-WESTERN
AREA. SEVERE GUSTS.SEA: ROUGH TO VERY ROUGH. W TO SW SWELL 3 TO 4
METERS.VISI: POOR TO VERY POOR IN PRECIPITATION.=