WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
29TH OF JULY 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 291000 TO 301000 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:
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1. DURBAN EAST: S to SW 35 in the south-west from mid-period.
2. MARION FORTIES EAST: W to NW 35 in the south.
SYNOPTIC CHART 06:00Z
=====================
High 1040 hPa 41s34e High 1022 hPa 37s14w.
Low 1016 hPa 31s13w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15 but variable 05 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 05 to 15 in the north, otherwise variable 05 but N
to NW 05 to 10 in the extreme south.
VIS : Good but moderate in showers in the south for the first half of
the period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 in the extreme east, otherwise SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m for the first half of the period, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 10 to 20 reaching 25 to 30 in the south-west.
VIS : Good but moderate in showers in the east. It will become moderate
in showers and rain in the south-west from mid-period.
SEA STATE: 3.0 to 4.0m in the south-west, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NE 15 to 25 in the south-east after which it will become variable
05, otherwise SE to E 15 to 25 but N to NW 10 to 20 in the south-
west.
VIS : Good.
SEA STATE: 3.0m over the eastern parts for the first half of the period, with
S to SE swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : SE to E 15 to 25 reaching 30 over the central and south-eastern
parts but NE to E 15 to 25 in the west. It will become variable 05
in the south-west from mid-period.
VIS : Moderate in showers and rain but good in the far west.
SEA STATE: 3.0 to 4.0m reaching 4.5m in the north, with SW swell but with S
to SE swell in the north-west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to NE 10 to 20 but S to SW 15 to 25 in the south-west reaching
30 to 35 from mid-period.
VIS : Moderate in showers and thundershowers in places but poor in the
south-west.
SEA STATE: 3.0m to 3.5m reaching 4.0 to 4.5m in south-west, with S swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 05 to 10 reaching 15 in the north.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 05 to 10 reaching 15 to 20 in the north.
VIS : Moderate in showers over the eastern and southern parts, otherwise
good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the extreme north, otherwise W to NW 15
to 25 reaching 30 to 35 in the south. It will become SW 20 to 30
in the south-west from mid-period.
VIS : Good becoming moderate to poor in showers and rain in the south-
west from mid-period spreading to the central and south-eastern
parts by end of the period.
SEA STATE: 3.0 to 4.0m reaching 5.0 to 6.0m in the south, 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)
26/07/29 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER SOUTHEASTERN CRO AT FIRST.
- GALE OVER KER.
PART 2: GENERAL SYNOPSIS, 26/07/29 AT 0000UTC
- HIGH PRESSURE AREA OVER WAM AND AMS.
- DISTURBED WESTERLY FLOW OVER SOUTHERN CRO AND KER.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/29 AT 0600UTC TO 26/07/30 AT 0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS.
WIND : VARIABLE 2 A 4, GRADUALLY INCREASING FROM WEST E OR SE 4 TO 5, AT TIMES 6 WITH GUSTS OVER SOUTHERN.
SEA : MODERATE OR ROUGH. SW SWELL 2 OR 2 METERS AND A HALF.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FEW SHOWERS.
WIND : ANTICLOCKWISE 2 TO 4.
SEA : ROUGH, BUT LOCALLY VERY ROUGH OVER FAR SOUTHERN. SW SWELL 2 TO
4 METERS FROM NORTH TO SOUTH.
VIS : MAINLY GOOD.
CRO (40S/50S, 50E/65E)
FEW SHOWERS.
WIND : W 6 TO 7, AT TIMES 8 OVER SOUTHEASTERN AT FIRST, BUT ANTICLOCKWISE 3 TO 5 OVER NORTHERN. GUSTS.
SEA : ROUGH TO HIGH FROM NORTH TO SOUTH. SW SWELL 3 TO 5 METERS FROM NORTH TO SOUTH.
VIS : MAINLY GOOD.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS OVER SOUTHERN.
WIND : W 6 OR 7, AT TIMES 8, BUT ANTICLOCKWISE 3 TO 5 OVER NORTHERN AT FIRST. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH. SW SWELL 4 TO 6 METERS.
VIS : POOR IN PRECIPITATION