WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19th OF SEPTEMBER 2026 AT 13:30 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:
=======
FORECAST VALID FROM 192200 TO 202200 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 EAST : N to NW 35 in the south-east at first.
2. MARION FORTIES EAST: W to NW 35 in the north-east by mid-period, but
SW 35 in the south.
SYNOPTIC CHART 12:00Z
=====================
High 1030 hPa 33s02e, High 1035 hPa 35s42e
Low 955 60s23e Low 960 hPa 63s59e.
1. Cold Front: 44s30e 47s42e 53s51e into 63s59e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 over the central parts spreading to the east
from mid-period, otherwise E to SE 05 to 15, reaching 20 to 25
in the south-west.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west.
SEA STATE: 3.0 to 3.5m in the eastern parts at first, with SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the extreme east, otherwise S to SE 15 to
25, reaching 30 in the central and south-eastern parts.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 15 5 to 25 in the east, otherwise S to SW 15 to 25, but
variable 05 to 10 in the central south.
VIS : Good but moderate to poor in showers and thundershowers across
the central northern parts to the south-east.
SEA STATE: 3.0m in the south-west by the end of the period, with W to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 over the western parts, otherwise S to
SE 15 to 25, but W to SW 05 to 15 in the south-west.
VIS : Good, but moderate in showers and rain in the extreme south.
SEA STATE: 3.0 to 3.5m in the east at first, with SW swell in the
south-east, but SE in the north-east.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 10 in the north-east, otherwise N to NW 05
to 15, reaching 25 to 35 in the south-east at first, but SE 05
to 10 in the south-west.
VIS : Good becoming moderate to poor in places in the north-east and
the south-east at first.
SEA STATE: 3.0 to 3.5m in the extreme south-east, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE 05 to 15 in the north-west at first, otherwise E to
NE 15 to 25.
VIS : Good but moderate to poor in showers and rain in the north-
East.
SEA STATE: 3.0m in the central north, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 in the south, otherwise S to SW 05 to 15, but
variable 05 to 10 in the north-west.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : N to NE 05 to 15 in the south, otherwise E to SE 15 to
25, reaching 30 in the north-west.
VIS : Moderate in showers and rain in the central and north-eastern
parts, otherwise good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25, reaching 30 to 35 in the north-east by mid-
period, but SW 25 to 35 in the south.
VIS : Good but moderate in showers and rain in the north but poor in
snow-showers over the south-east.
SEA STATE: 3.0 to 4.0m reaching 5.0 to 6.0m in the central parts, but
reaching 7.0 to 10.0m in the extreme south-west towards the
end of the period, with W to SW swell.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/19 AT 0500UTC
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 CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/09/19 AT 0000UTC
- DISTURBED FRESH OR STRONG WESTERLY FLOW OVER SOUTHERN PART OF
BASIN.
- WAVING COLD FRONT CF AXIS 30S/46S, 31S/51E, 33S/60E,
34S/63E.
- COLD FRONT CG AXIS 44S/20E, 46S/26E, 51S/34E.-
ANTICLOCKWISE 1035 HPA NEAR 37S/39E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/19 AT 0600UTC TO 26/09/20 AT
0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN OR SHOWERS UNDER CF.
WIND : S 4 TO 5 LOCALLY 6 BEHIND CF BECOMING ANTICLOCKWISE 3 A 4 BY
WESTERN AREA.
SEA : MODERATE OR ROUGH FROM NORTH TO SOUTH. SW SWELL 2 TO 3
METERS.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN OR SHOWERS UNDER CF.
WIND : NW 4 TO 5 AHEAD THE FRONT BACKING SOUTHERLY 3 TO 4 BEHIND CF.
SEA : MODERATE OR ROUGH. SW SWELL 2 TO 3 METERS.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SHOWERS UNDER CG. SNOW SHOWERS OVER SOUTHERN
AREA.
WIND : WESTERLY INCREASING 6 TO 7 LOCALLY 8.
SEA : ROUGH OR VERY ROUGH. SW SWELL 3 TO 5 METERS.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS THEN FRONTAL RAIN OR SHOWERS UNDER CG. SNOW
SHOWERS OVER SOUTH-WESTERN AREA.
WIND : W TO NW 6 TO 7 AT TIMES 8. SEVERE GUSTS.
SEA : ROUGH OR VERY ROUGH. SW SWELL, 3 TO 5 METERS.
VIS : POOR IN PRECIPITATION.=