METAREA 7 bulletinset


HIGH SEAS FORECAST
FQZA31 FAPR 210830

WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.

ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE

21ST 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 211000 TO 221000 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: CYCLONIC 35 TO 40 IN THE CENTRAL PARTS, WHILE MOVING

EASTWARDS FROM MID-PERIOD.

2. MARION FORTIES EAST: NW 35 IN THE EXTREME SOUTH-WEST FROM

MID-PERIOD.

SYNOPTIC CHART 06:00Z

=====================

HIGH 1029 HPA 33S24E, HIGH 1029 HPA 31S59E

LOW 1008 HPA 43S00W, LOW 1020 37S35E

1. COLD FRONT: 29S08W 35S03W 39S01W INTO 43S00W.

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 : E TO SE 05 TO 15.

VIS : GOOD.

TRADES (15S/30S, 00E/WEST COAST):

WIND : S TO SE 10 TO 20, BUT SW TO W 05 TO 15 IN THE EXTREME

EAST.

VIS : GOOD.

TRISTAN (30S/40S, 00E/20W):

WIND : NW 20 TO 30 IN THE NORTH-EAST AT FIRST, OTHERWISE W TO SW

15

TO 25, AND ANTICYCLONIC 05 TO 15 IN THE WEST, WHILE

SPREADING

EASTWARDS IT WILL BECOME ANTICYCLONIC 05 TO 15 IN THE

CENTRAL

PARTS AND SE 15 IN THE NORTH-EAST AND NW 15 TO 25 IN THE

SOUTH-WEST BY END OF PERIOD.

VIS : GOOD.

SEA STATE: 3.0 M IN THE CENTRAL PARTS UNTIL MID-PERIOD, WITH W TO SW

SWELL.

CAPE WEST (30S/40S, 00E/20E):

WIND : E TO SE 15 TO 25 BUT W TO NW 05 TO 15 IN THE WEST, BUT SW

05 TO 15 IN THE SOUTH-WEST.

VIS : GOOD, BUT MODERATE IN SHOWERS AND RAIN IN THE EXTREME WEST

AT

FIRST.

SEA STATE: 3.0 M IN THE SOUTH-WEST AT FIRST, WITH NW SWELL.

CAPE EAST (32.5S/40S, 20E/50E):

WIND : ANTICYCLONIC 15 TO 25 IN THE EAST, OTHERWISE SE 05

TO 10, BUT CYCLONIC 20 TO 30 IN THE CENTRAL PARTS, WHILE

MOVING EASTWARDS, IT WILL REACH 35 TO 40 FROM MID-PERIOD.

VIS : GOOD BECOMING MODERATE TO POOR IN PLACES IN THE CENTRAL

AND

SOUTHERN PARTS, SPREADING TO THE EAST FROM MID-PERIOD.

SEA STATE: 3.0 TO 4.0M IN THE CENTRAL AND SOUTHERN PARTS, REACHING

5.0M

IN THE EAST FROM MID-PERIOD, WITH SW SWELL, BUT CYCLONIC

IN

THE EASTERN PARTS.

DURBAN EAST (32.5S/25S, EAST COAST/55E):

WIND : E TO NE 15 TO 25, BUT SE 05 TO 15 IN THE CENTRAL-NORTH

AND SW 05 TO 15 IN THE SOUTH-WEST WHERE IT WILL BECOME SE

TO E

05 TO 15 TOWARDS END OF PERIOD.

VIS : GOOD BUT MODERATE TO POOR IN SHOWERS AND RAIN IN THE EAST.

SEA STATE: 3.0M IN THE CENTRAL PARTS UNTIL MID-PERIOD, WITH S TO SE

SWELL.

MOZAMBIQUE CHANNEL:

WIND : S TO SE 15 TO 25 BUT W TO SW 05 TO 15 IN THE EAST.

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.

VIS : GOOD.

MARION FORTIES EAST (40S/50S, 35E/50E):

WIND : SW 15 TO 25, REACHING 30 IN THE SOUTH-EAST AT FIRST, BUT

SE 10

TO 20 IN THE NORTH AND NW 15 TO 25 IN THE SOUTH-WEST WHERE

IT

WILL REACH 30 TO 35 IN THE EXTREME SOUTH-WEST FROM

MID-PERIOD.

VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE NORTH AT

FIRST,

BUT IN SNOW-SHOWERS OVER THE SOUTH.

SEA STATE: 3.0 TO 4.0M REACHING 5.0 TO 6.0M IN THE IN THE CENTRAL

PARTS

AND SOUTHERN PARTS, BUT 7.0 TO 9.0M IN THE SOUTH-EAST

UNTIL

MID-PERIOD, WITH W TO SW SWELL.

AREA 2:

======

MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA

ACK (AMSTERDAM-CROZET-KERGUELEN)

26/09/21 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 STRONG GALE CONTINUING OVER CRO.

- GALE EXPECTED SOON OVER KER.

PART 2: GENERAL SYNOPSIS, 26/09/21 AT 0000UTC

- DISTURBED FRESH OR STRONG WESTERLY FLOW OVER SOUTHERN PART OF

BASIN.

- COLD FRONT AXIS 40S/61S 40S/55E, MOVING EASTWARD.

- HIGH 1029 OVER NORTHERN WAM AND AMS.

- HIGH EXPECTED 1032 OVER WESTERN CRO AT END.

PART 3: FORECAST FOR 24 HOURS FROM 26/09/21 AT 0600UTC TO 26/09/22 AT

0600UTC

WAM (30S/40S, 50E/65E)

RAIN OVER FAR SOUTHERN SOON.

WIND : ANTICLOCKWISE 3 TO 5, BUT W 5 OR 6 OVER FAR SOUTHERN AT FIRST.

SEA : MODERATE TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL OVER

SOUTHERN, 2 OR 3 METERS, INCREASING 4 OR 5 METERS AT END.

VISI : POOR WITH PRECIPITATION OVER FAR SOUTHERN.

AMS (30S/40S, 65E/80E)

FEW SHOWERS, THEN FRONTAL SHOWERS AND RAIN OVER SOUTHERN AT END.

WIND : ANTICLOCKWISE 3 TO 5 BUT W 5 OR 6 OVER FAR SOUTHERN.

SEA : MODERATE TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL 2 TO 4

METERS

OVER SOUTHERN.

VISI : GOOD, THEN POOR WITH PRECIPITATION OVER FAR SOUTHERN.

CRO (40S/50S, 50E/65E)

FRONTAL RAIN AND SHOWERS OVER FAR NORTHERN AT FIRST, ELSEWHERE

SCATTERED SHOWERS, LOCALLY SNOWY OVER FAR SOUTHERN.

WIND : W OR SW 6 OR 7 OVER NORTHERN, 8 OR 9 OVER SOUTHERN, DECREASING

5

OR 6 FROM WEST LATER, THEN BECOMING ANTICLOCKWISE 3 TO 5 OVER

NORTHERN AT END. SEVERE GUSTS.

SEA : VERY ROUGH TO VERY HIGH FROM NORTH TO SOUTH. SW SWELL 2 TO 4

METERS SOON INCREASING 7 TO 9 METERS.

VISI : POOR TO VERY POOR WITH PRECIPITATION.

KER (40S/50S, 65E/80E)

RAIN OVER NORTHERN. SNOW SHOWERS OVER SOUTHERN.

WIND : W 6 OR 7, SOON INCREASING 7 OR 8, DECREASING SW 5 OR 6 OVER

NORTHWESTERN AT END. SEVERE GUSTS.

SEA : VERY ROUGH SOON BECOMING HIGH TO VERY HIGH FROM SOUTHWEST. W

TO SW

SWELL 3 TO 5 METERS, INCREASING 7 OR 8 METERS AT END.

VISI : POOR TO VERY POOR WITH PRECIPITATION.

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