WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
12th 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 121000 TO 131000 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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Nil
SYNOPTIC CHART 06:00Z
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High 1036 hPa 44s27e; Low 1019 hPa 25s46e;
1. Cold Front: 29s23w 35s12w 40s08w 47s09w into 43s16w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
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 : NW 10 to 15 in the south reaching 20 to 25 in the extreme south-
west towards the end of the period, otherwise E to SE 10 to 15.
VIS : Good, but moderate in showers and thundershowers in the
south at first.
SEA STATE: 3.0m in the extreme south-west from the second half of the period,
with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 but variable 05 to 10 in the south-west.
VIS : Good, but moderate in rain and showers in the extreme south-west.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 10 to 20 reaching 25 to 30 in the south, while becoming
south-west 15 to 25 in the south-west towards the mid-period.
VIS : Moderate to poor in showers and thundershowers, but good in places
in the north-east.
SEA STATE: 3.0 to 4.0m in the west, reaching 4.5 to 5.5m, spreading to the
south from the second half of the period with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 in the north-east, but E to SE 15 to 25 in the east
otherwise, NW 05 to 15 reaching 20 to 25 in the extreme south-west
from the second half of the period.
VIS : Good but moderate in showers in the west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to SE 10 to 20 but S to SW 15 to 20 in the extreme east at
first.
VIS : Moderate in showers and rain.
SEA STATE: 3.0 but 4.0m in the east at first, with SW to S swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20 reaching 25 in the south, but variable 05 to 10
in the north at first.
VIS : Moderate in showers and rain.
SEA STATE: 3.0 becoming 4.0m in the south by the second half of the period,
with SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 10 to 15
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : cyclonic 10 to 25 over the central, otherwise variable 05 to 10kt
becoming SE 10 to 15 in the south toward the mid-period.
VIS : Moderate in showers and rain.
SEA STATE: 3.0m in the south, with S to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 but anticyclonic 05 to 15 in the extreme
north-west.
VIS : Good but moderate in showers and rain in the south-west at first.
SEA STATE: 3.0 to 4.0m, subsiding from the west during the second half of the
period, 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)
26/07/12 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Strong gale running over KER.
- Gale running over northeastern CRO.
PART 2: GENERAL SYNOPSIS, 26/07/12 AT 0000UTC
- Deepening low 999 hPa near 44S/66E moving rapidly south-eastward with cold front axis 38S/54E, 39S/58E, 44S/63E.
- Cold front over AMS moving eastward slowly.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/12 at 0600UTC to 26/07/13 at 0600UTC
WAM (30S/40S, 50E/65E)
Showers frontal.
WIND : Variable 2 to 4 over northern at first and increasing SW 4 to 6 , at
times 7, by southwestern area. Gusts.
SEA : rough to very rough. SW swell 3 to 4 m.
VIS: poor in precipitation.
AMS (30S/40S, 65E/80E)
Frontal rain and showers.
WIND : increasing NW 4 to 6, at times 7, and backing SW 5 to 6 by western
area later. Gusts.
SEA : rough to very rough. SW swell 3 or 4 m.
VIS : poor with precipitation.
CRO (40S/50S, 50E/65E)
Frontal rain and showers over northeastern.
WIND : SW 5/6 at times 8, increasing 8 over northeastern at first. Gusts.
SEA : very rough. W swell 2 to 4 m.
VIS : poor with precipitation.
KER (40S/50S, 65E/80E)
Frontal rain and showers.
WIND : NW 5 to 6, increasing locally 7 to 8, at times 8/9 over far southern
area at first. Setting up 5 to 6 by western area behind the front soon.
Severe gusts.
SEA : very rough to rough. W swell 3 to 5 m.
VIS : poor with precipitation.