Bulletinset for METAREA 7
Edition date (UTC): 2026-08-11 23:11:57
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HIGH SEAS FORECAST
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FQZA31 FAPR 111730



WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.

ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE

11TH OF AUGUST 2026 AT 17:30 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 112200 TO 122200 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. TRISTAN: W to NW 35 to 40 in places in the southern parts for the

            first half of the period.



2. CAPE WEST: E to NE 35 at times in the east and south-east.



3. DURBAN EAST: SE to E 35 in places in the north-west for the first half

                of the period.



4. MARION FORTIES EAST: W to SW 35 in places in the west and over the

                        southern parts.





SYNOPTIC CHART 12:00Z

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

High 1042 hPa 40s27e.



Low 986 hPa 41s18w.



Cold Front: 24s28w 27s21w 33s16w into 41s18w





AREA FORECAST:

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

ASCENSION (06S/15S, 00E/20W):

WIND     : E to SE 05 to 15.

VIS      : Good.

SEA STATE: 3.0 in the south-east until mid-period, with S to SE swell



ANGOLA (06S/15S, 00E/00N):

WIND     : S to SE 05 to 15 but SW to W 05 to 10 in the east.

VIS      : Good.

SEA STATE: 3.0 in the south for the first half of the period, with S to

           SE swell.



ST HELENA (15S/30S, 00E/20W):

WIND     : NE 10 to 20 in the south-east until mid-period, otherwise

           variable 05 to 10 but N to NW 15 to 25 in the south and west,

           spreading to the south-east from mid-period. It will W to SW

           15 to 25 in the south-west.

VIS      : Good, but moderate to poor in showers and thundershowers the

           south-west, west and south.

SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the south-west, with S to

           SE swell.



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

WIND     : Variable 05 to 15 but E to SE 15 to 25 in the southern parts

           for the first half of the period.

VIS      : Good.

SEA STATE: 3.0 to 3.5m in the south and west, with SE swell.



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

WIND     : N to NE 15 to 25 in the eastern parts, otherwise W to NW 15 to

           25 reaching 30 to 40 in places in the southern parts for the

           first half of the period becoming SW 20 to 30 over the western

           parts towards the end of the period.

VIS      : Good but moderate to poor in showers and thundershowers in

           places.

SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the western and southern

           parts, with W to SW swell.



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

WIND     : E to NE 15 to 25, reaching 30 to 35 at times in the east and

           south-east, but N to NW 15 to 25 in the western parts from

           mid-period.

VIS      : Good.

SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0 in the south-east and south-

           west, with E to SE swell.



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

WIND     : S to SE 15 to 25 but E to NE 15 to 25 in the west, reaching 30

           to 35 in the north-west and west at times.

VIS      : Good but moderate in showers and rain in the northern and

           eastern parts at times.

SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the west from the second

           half of the period with W to SW swell.



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

WIND     : Variable 05 to 10 in the north-east, otherwise SE to E 15 to

           25, reaching 30 to 35 in places in the north-west for the

           first half of the period.

VIS      : Good but moderate to poor in showers and thundershowers in

           places.

SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m over the central and western

           parts, with S to SE swell.

MOZAMBIQUE CHANNEL:

WIND     : S to SE 05 to 15, reaching 20 to 30 in places in the south.

VIS      : Good, becoming moderate to poor in showers and thundershowers

           over the southern parts.

SEA STATE: 3.0 to 4.0m in the southern parts reaching 4.5 to 5.0m from

           mid-period, with S to SE swell.



MADAGASCAR EAST (10S/25S, EAST COAST/55E):

WIND     : E to SE 10 to 20, but variable 05 to 15 in the south.

VIS      : Good, but moderate in showers and thundershowers in places.

SEA STATE: 3.0m in the eastern and northern parts but in the southern

           parts from mid-period, with E to SE swell.



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

WIND     : W to SW 15 to 25 reaching 30 to 35 in places in the west and

           over the southern parts.

VIS      : Moderate in showers and rain in places in the northern parts.

SEA STATE: 3.0 to 4.0m reaching 4.0 to 6.0m in the southern parts, with W

           to SW swell.





AREA 2:

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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)



26/08/11 AT 1700UTC



AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).



PART 1: WARNING



- Gale to strong gale over CRO and KER



PART 2: GENERAL SYNOPSIS, 26/08/11 AT 1200UTC



High 1037 hPa near 33S/94E with a ridge to the west, moving slowly eastward.High 1045 hPa near 39S/23E with a ridge to the east, moving slowly eastward.Between these two cells, cold front (CF) axis 29S/50E, 40S/65E, 46S/80E, moving east-north-eastward.A cold front (CG) transit over southern CRO and southern KER with a deepening low, expected 948 hPa near 57E/72S at end.





PART 3: FORECAST FOR 24 HOURS FROM 26/08/11 at 1800UTC to 26/08/12 at 1800UTC



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

Rain, frontal showers. Squalls. CF

WIND    : Northwest 4 to 6 ahead of the front, backing to South to

          Southeast 4 to 6 behind the front, settling Southwest 5/6 in

          the far south at end.

SEA     : Rough, but moderate in the northeast. Southwest swell 2 to 3

          meters behind the front.

VIS     : Poor to very poor during precipitation.



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

Scattered showers, then rain and frontal showers.

WIND    : North to North-West 3/4 in the north and 5/6 locally 7 in the

          south, backing by southwest behind the front, Southerly to

          Southwest 4/5, locally 6.

SEA     : Moderate to Rough, locally very rough in the far south.

          Southwest swell 2 to 3 meters behind the front.

VIS     : Poor in precipitation.



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

Showers, rain/snow, and showers in the far south. CG.

WIND    : Southerlyto Southwest 5/6, increasing soon Westerly 7/8 over

          the south, then during the day increasing Westerly 8/9 over

          the southeast half and 6/7 over the northwest half. Violent

          gusts.

SEA     : Rough to very rough from north to south, becoming high in the

          southeast half. Southwest swell 3 to 5 meters.

VIS     : Poor to very poor in precipitation.



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

Rain and frontal showers. Loc snow in the south. CF then CG

WIND    : Southerly to southwest 5/6, increasing soon Westerly to

          Northwest 7/8 by south area, reaching 9 locally in the south

          later But Northwest 6/7 in the northeast at firstahead of the

          front CF. Violent gusts.

SEA     : Rough to very rough, becoming very rough to high from north to

           south. Southwesterly Swell3 to 5 meters.

VIS     : Poor to very poor in precipitation.