WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
12th OF JULY 2026 AT 13:30 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 122200 TO 132200 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 12:00Z
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High 1036 hPa 44s30e.
1. Cold Front: 29s19w 35s09w 43s05w 49s10w into 45s13w
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.
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 during the second half of the period, otherwise E to SE 10 to
15.
VIS : Good.
SEA STATE: 3.0m in the extreme south-west 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
at first.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 10 to 20 in the east reaching 25 at times but south-west
15 to 25 in the south-west spreading to the south towards the mid-
period while becoming S to SE 15 to 25 in the west towards the end
of the period.
VIS : Good, but moderate to poor in showers and thundershowers in the
south at first, while becoming poor in showers in the north-west
towards the mid-period.
SEA STATE: 4.0 to 4.5m in the west reaching 5.0 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
at first, otherwise NW 05 to 15 reaching 20 to 25 in the extreme
south-west spreading to the south towards the second half of the
period.
VIS : Good but moderate in showers in the west.
SEA STATE: 4.0 to 4.5m in the west reaching 5.0 to 5.5m, spreading to the
south from the second half of the period with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : SE 10 to 20 in the east at first becoming 05 to 10 in the south-
east towards the end of the period otherwise, E to NE 15 to 25.
VIS : Moderate in showers and rain in the west.
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 : E to SE 10 to 20 reaching 25 in the south at first, spreading to
the north-east towards the second half of the period, otherwise
variable 05 to 10 in the north.
VIS : Moderate in showers and rain in the north and west.
SEA STATE: 3.0 reaching 4.0 to 4.5m in the south at first drifting to the
central by second half of the period, with SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 10 to 15
VIS : Good.
SEA STATE: 2.0 at first, with SW swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : cyclonic 10 to 25 over the central, otherwise variable 05 to 10kt
but SE 10 to 20 in the south.
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 spreading eastwards to the north towards the end of the
period.
VIS : Good.
SEA STATE: 3.0 to 4.0m, subsiding in the west towards the mid-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.