WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22ND OF SEPTEMBER 2026 AT 17:00 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:
=======
FORECAST VALID FROM 222200 TO 232200 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. MARION FORTIES EAST: NW TO W 35 IN THE SOUTHERN PARTS, BECOMING SW
35
IN THE SOUTH-WEST FROM MID-PERIOD, SPREADING
TO
THE SOUTHERN PARTS DURING THE SECOND HALF OF
THE
PERIOD.
SYNOPTIC CHART 12:00Z
=====================
HIGH 1028 HPA 35S10W, HIGH 1032 HPA 43S50E
LOW 1012 HPA 34S17E, LOW 1014 34S46E
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 BUT SW 05 TO 10
IN THE EAST.
VIS : GOOD.
ST HELENA (15S/30S, 00E/20W):
WIND : SE TO E 10 TO 20 BECOMING NE TO N 05 TO 15 IN THE
SOUTH-WEST
TOWARDS MID-PERIOD.
VIS : GOOD BUT MODERATE IN RAIN IN THE SOUTH-EAST AND EAST.
SEA STATE: 3.0 IN THE SOUTH-EAST FROM MID-PERIOD, WITH SE SWELL.
TRADES (15S/30S, 00E/WEST COAST):
WIND : SE TO E 10 TO 20, BUT S TO SW 05 TO 15 IN THE
NORTH-EAST AND
NW 05 TO 15 IN THE SOUTH-EAST BECOMING VARIABLE IN THE SOUTH-
EAST FROM MID-PERIOD.
VIS : GOOD BUT MODERATE IN SHOWERS AND
RAIN IN THE SOUTH-
WEST.
SEA STATE: 3.0 IN THE SOUTH-WEST FROM MID-PERIOD, WITH SE SWELL.
TRISTAN (30S/40S, 00E/20W):
WIND : ANTI-CYCLONIC 05 TO 15, BUT SE 10 TO 20 IN THE
NORTH-EAST AND
NW 15 TO 25 IN THE SOUTH-WEST AND WEST, REACHING 30.
VIS : GOOD, BECOMING MODERATE TO POOR IN SHOWERS AND
THUNDERSHOWERS
IN THE SOUTH-WEST.
SEA STATE: 3.0 TO 4.0M IN THE SOUTH-WEST, REACHING 4.5 TO
5.0M FROM MID-
PERIOD, WITH W TO NW SWELL.
CAPE WEST (30S/40S, 00E/20E):
WIND : W TO NW 05 TO 15 IN THE NORTH-EAST, OTHERWISE
SE TO S 15 TO
25 BUT VARIABLE 05 TO 10 IN THE SOUTH-WEST.
VIS : GOOD, BUT MODERATE IN SHOWERS AND
THUNDERSHOWERS IN PLACES IN
THE EAST AND CENTRAL PARTS.
SEA STATE: 3.0 M IN THE NORTH-WEST, WITH W TO SW SWELL.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : SE TO E 10 TO 20, REACHING 25 IN THE SOUTH-WEST
AND SOUTH
TOWARDS MID-PERIOD BUT CYCLONIC 15 TO 25 IN THE EAST AND
NORTH-EAST AND N TO NE 15 TO 25 IN THE WEST
UNTIL MID-PERIOD.
VIS : GOOD BUT MODERATE TO POOR IN SHOWERS AND THUNDERSHOWERS IN
PLACES IN THE WESTERN PARTS AND SOUTH.
SEA STATE: 3.0 TO 4.0M IN THE CENTRAL AND EASTERN PARTS,
REACHING 5.0M
IN THE EAST AND NORTH-EAST FOR THE FIRST HALF OF THE
PERIOD,
WITH SW SWELL.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N TO NE 15 TO 25 IN THE EAST AND SOUTH-WEST,
BUT S TO SE 05 TO
15 IN THE SOUTH AND CENTRAL PARTS, OTHERWISE VARIABLE 05
TO
15.
VIS : GOOD BUT MODERATE TO POOR IN SHOWERS AND
THUNDERSHOWERS IN
THE EASTERN PARTS.
SEA STATE: 3.0 TO 4.0M IN THE EASTERN AND SOUTHERN PARTS,
WITH S SWELL.
MOZAMBIQUE CHANNEL:
WIND : S TO SE 10 TO 20 BUT VARIABLE 05 TO 15 IN THE NORTH
BECOMING
NE 05 TO 15 IN THE SOUTH-WEST FROM MID-PERIOD.
VIS : GOOD.
SEA STATE: 3.0 IN THE SOUTH-EAST FROM THE SECOND HALF OF
THE PERIOD, WITH
S SWELL.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : N TO NE 05 TO 15 IN THE SOUTH, OTHERWISE E TO
SE 10 TO 20
BECOMING VARIABLE 05 TO 15 IN THE CENTRAL AND SOUTHERN
PARTS
FROM THE SECOND HALF OF THE PERIOD.
VIS : GOOD, BUT MODERATE IN SHOWERS AND
THUNDERSHOWERS IN THE
SOUTH.
SEA STATE: 3.0 IN THE SOUTHERN PARTS FROM MID-PERIOD, WITH
S SWELL.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW TO W 15 TO 25, REACHING 30 TO 35 IN THE SOUTHERN PARTS
BECOMING SW 25 TO 35 IN THE SOUTH-WEST FROM MID-PERIOD,
SPREADING TO THE SOUTHERN PARTS DURING THE
SECOND HALF OF THE
PERIOD.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE
SOUTH AND WEST,
BUT IN SNOW-SHOWERS OVER THE SOUTH-WEST, SPREADING TO THE
SOUTHERN PARTS FROM THE SECOND HALF OF THE PERIOD.
SEA STATE: 3.0 TO 4.0M REACHING 5.0 TO 7.0M IN
THE IN THE SOUTHERN PARTS,
WITH W TO SW SWELL.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA
REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/22 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 CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/09/22 AT 1200UTC
- HIGH AT 1032 HPA NEAR 44S/54E, MOVING EASTWARD; FORECAST TO BE AT
1035
HPA NEAR 38S/73E ON THE 23RD AT 12 UTC.
- LOW AT 1012 HPA NEAR 35S46E,
MOVING EASTWARD AND FILLING, FORECAST TO BE AT 1015 HPA NEAR
34S51E ON
THE 23RD AT 12 UTC, ASSOCIATED WITH AN AREA OF DISTURBED WEATHER
EXTENDING NORTHWARD SOUTH OF MADAGASCAR.
- WAVING FRONT CENTERED AT 38S46E, 35S65E, AND 37S85E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/22 AT 1800UTC TO
26/09/23 AT 1800UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS. RAIN AND LOCALLY THUNDERY SHOWERS MOVING INTO THE
WESTERN REGION AND SLOWLY SHIFTING EASTWARD.
WIND : EAST TO NORTHEAST 3 TO 5, INCREASING TO 6/7 WITH GUSTS IN THE
WESTERN AREA, THEN BACKING TO WEST TO SOUTHWEST 2/3 IN THE
NORTHWESTERN AREA.
SEA : STRONG TO VERY STRONG, BUT HIGH IN THE
SOUTHEASTERN AREA AT FIRST.
LONG SWELLS FROM THE SOUTHWEST OF 3 TO 5 METERS, 6 METERS IN
THE
SOUTHWEST AT FIRST.
VISI : POOR TO VERY POOR DURING PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND :EAST TO NORTHEAST 2 TO 5, BUT CLOCKWISE 2 TO 4 SOUTH OF
THE AREA.
SEA : VERY ROUGH TO HIGH IN THE SOUTHERN PART OF THE AREA DUE TO A
LONG
SOUTHWEST SWELL OF 4 TO 7 METERS.
VISI : MODERATE DURING PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN AND SNOW WITH FRONTAL SHOWERS MOVING INTO THE SOUTHWEST
AREA BY THE END OF THE PERIOD.
WIND : NORTH OF 50E: CLOCKWISE 2 TO 4 IN THE NORTHERN PART OF THE
AREA,
SHIFTING TO NORTH TO NORTHWEST AT 4 TO 6, LOCALLY 7. SOUTH OF
50E:
WEST 5 TO 6 VEERING TO NORTHWEST AT 6 TO 7, BUT 8 IN THE
SOUTHWESTERN PART OF THE AREA.
SEA : VERY ROUGH TO HIGH DUE TO A LONG SOUTHWEST SWELL
OF 4 TO 6 METERS,
GRADUALLY SUBSIDING. SEAS BECOMING ROUGH TO LOCALLY MODERATE
IN
NORTHERN HALF OF THE AREA
VISI : VERY POOR DURING PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS, SOMETIMES SNOWY.
WIND : WESTERLY 4 TO 7 FROM NORTH TO SOUTH, LOCALLY 8; VEERING
TO
NORTHWEST 5 TO 7 IN THE WEST BY THE END. GUSTS.
SEA : HIGH TO LOCALLY VERY HIGH IN THE SOUTHEAST AT FIRST,
DECREASING
FROM THE WEST AND GRADUALLY BECOMING VERY ROUGH. SOUTHWEST
SWELL
OF 6 TO 7 METERS, ABATING.
VISI : POOR UNDER PRECIPITATION.