WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
08TH 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:
=======
FORECAST VALID FROM 082200 TO 092200 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. TRADES: S to SE 35 in the central and south-eastern parts towards the
end of the period.
2. CAPE WEST: E to SE 35 in places in the east from mid-period.
3. CAPE EAST: W to SW 35 in the north-west from mid-period, but S to SE
35 in places over the central from mid-period.
4. DURBAN EAST: W to SW 35 in the south-west towards the end of the
period.
5. MARION FORTIES EAST: W to NW 35 in places in the south-west towards
the end of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1034 hPa 40s03w, High 1039 hPa 47s63e, High 1038 hPa 36s73e.
Low 952 hPa 59s40e.
1. Cold Front: 34s18e 39s24e 44s30e 53s37e into 59s40e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : S to SE 05 to 15 reaching 20 to 25 in the east, but
E to NE 05 to 15 in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the east, with E to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 reaching 30 to 35 in the central and south-
eastern parts towards the end of the period.
VIS : Good.
SEA STATE: 3.0 to 4.0m except in the south-west, reaching 4.5 to 5.0m in
the central and south-eastern parts towards the end of the
period, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : E to NE 15 to 25 in the east, otherwise N to NW 15 to 25,
reaching 30 to 35 in the south-west towards the end of the
period.
VIS : Good but moderate to poor in showers and thundershowers
in the south-west.
SEA STATE: 3.0 to 4.0m in the south-west, spreading to the south-central
from mid-period, reaching 4.5 to 5.5m in the , with W to NW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 15 to 25 in the east for the first-half of the period,
otherwise E to SE 15 to 25, reaching 30 to 35 in places in
the east until mid-period but anticyclonic 05 to 15 in the
south-west, spreading to the south-central from mid-period.
VIS : Good but moderate in showers and rain in the eastern parts,
clearing towards the end of the period.
SEA STATE: 3.0 to 4.0m except in the west, reaching 4.5 to 5.5m in the
south-east, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 in the west at first, drifting to the north-
west from mid-period where it will reach 30 to 35, otherwise S
to SE 15 to 25, reaching 30 to 35 in places over the central
from mid-period but N to NE 10 to 20 over the east, reaching
25 in the extreme east.
VIS : Good but moderate in showers and thundershowers in west,
spreading to the central from mid-period.
SEA STATE: 3.5 to 4.5m, except in the east, reaching 5.0 to 5.5m in the
Places in the west until mid-period, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : W to SW 15 to 25 in the south-west reaching 30 to 35 towards
the end of the period, otherwise N to NE 15 to 25.
VIS : Good but moderate in showers and rain in the central and
in the south-west towards the end of the period.
SEA STATE: 3.0m in the north-east and south-west towards the end of the
period, with NE swell in the north-east but SW swell in the
south-west.
MOZAMBIQUE CHANNEL:
WIND : SE to S 05 to 15 becoming N to NE 05 to 10 in the south-west
from mid-period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25, but NE 15 to 25 in the south.
VIS : Good but moderate in showers and rain in west and in places in
the central.
SEA STATE: 3.0m except in the central parts, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 over the central and east for the first-half of
the period, and in the west towards the end of the period where it
will reach 30 to 35 in places in south-west but S to SW 15 to
25 in the west, spreading to the east from mid-period.
VIS : Moderate in showers and rain in the west spreading to the
central from mid-period and to the east towards the end of the
period. Possible snow-showers in the south until mid-period.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 5.5m in the south, with W to SW
swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/08 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- NIL.
PART 2: GENERAL SYNOPSIS, 26/08/08 AT 1200UTC
- COLD FRONT AXIS 41S/71E, 43S/76E, 45S/80E, LEAVING THE KER AREA
SOON.
- ARRIVAL OF A COLD FRONT BY SOUTH-WESTERN CRO SOON.
- HIGH 1038 NEAR 37S/68E, EXPECTED 1043 HPA NEAR 38S/72E THE 09 AT 06
UTC.
- HIGH 1038 NEAR 48S/63E, EXPECTED 1046 HPA NEAR 44S/78E THE 09 AT 06
UTC.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/08 AT 1800UTC TO 26/08/09
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS OVER SOUTH-WESTERN AT FIRST.
WIND: NORTHERLY 5 OR 6, THEN AT TIMES 7 IN SOUTHWEST WITH GUSTS AT
BIGINNING. DECREASING 4 TO 5 ALL OVER THE AREA AT END.
SEA : MODERATE OR ROUGH.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
VENT: ANTICLOCKWISE 3 TO 4, SETTING-UP EASTERLY 5 TO 6 OVER NORTHERN.
MER : MODERATE OR ROUGH.
VISI: GOOD.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS.
WIND: NORTH-EAST 5 TO 6, LOCALLY 7 SETTING-UP NORTH-WEST 5 TO 6 BY
WESTERN IN THE MORNING AHEAD THE FRONT, BACKING SOUTH-WEST 4 TO 5
BEHIND BY SOUTH-WESTERN AT END.
SEA : MODERATE OR ROUGH, LOCALLY VERY ROUGH IN SOUTH. SW SWELL 3 OR 4
M IN SOUTH, DECREASING.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE 4 OR 5 BUT SOUTHERLY 6 OVER FAR EASTERN AT FIRST,
SETTING-UP NORTHERLY 6 TO LOCALLY 7 BY WESTERN SOON. GUSTS.
SEA : ROUGH OR VERY ROUGH, LOCALLY MODERATE IN NORTHWEST.
SOUTH-WESTERLY SWELL 3 TO 4 M, DECREASING AT END.
VISI: POOR IN PRECIPITATION.