WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
01ST OF AUGUST 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 011000 TO 021000 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. ST HELENA: SW to S 35 to 40 in the south-west, spreading to the south
from the second half of the period.
2. TRISTAN : Cyclonic 35 to 45 in the west and north-west, spreading to the
north from mid-period.
3. CAPE EAST: E to NE 35 in the west at times, otherwise S to SE 35 to 40 in
places in the central, east and northern parts.
4. DURBAN EAST: N to NE 35 in the south-east, otherwise cyclonic 35 to 40 in
places in the western and southern parts.
5. MOZAMBIQUE CHANNEL: S to SW 35 in the south-west for the first half of
the period.
6. MARION FORTIES EAST: N to NW 35 in the southern parts.
SYNOPTIC CHART 06:00Z
=====================
High 1030 hPa 34s29w, High 1042 43s56e.
Low 1011 hPa 29s43w, Low 1008 hPa 32s12w.
1. Cold front: 22s22w 25s17w 28s14w into 32s12w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20 but variable 05 to 15 in the east.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE 05 to 15 in the north, otherwise W to NW 15 to 25,
but SW to S 15 to 25 in the south-west, reaching 30 to 40,
spreading to the south from the second half of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the south-west and south, drifting to the south-east from the
second half of the period.
SEA STATE: 3.0 to 4.0m in the south and west, reaching 4.5 to 5.0m in
the south-west, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 15 in the south-west, otherwise S to SE 05 to 15
becoming NW 10 to 20 in the south-west from the second half of the
period.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 15 to 25 in the east, but cyclonic 15 to 25 in the west
and north-west, reaching 35 to 45, spreading to the north from
mid-period, while moderating in the west, otherwise S to SW 15 to
25.
VIS : Moderate to poor in showers and thundershowers in places, clearing
in the south and west from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the west, south and south-
east, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : E to NE 15 to 25 in the east, but variable 05 to 15 in the
central and northern parts, otherwise N to NW 15 to 25, reaching
30 in the south-west but NE 20 to 30 in the south-east.
VIS : Good, but moderate in showers and rain in the south-west and west.
SEA STATE: 3.0 to 4.0m in the south-east, south-west and west, with W to NW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 15 to 25 in the west, reaching 30 to 35 at times,
otherwise S to SE 15 to 25, reaching 30 to 40 in places in the
central, east and northern parts.
VIS : Good but moderate to poor in showers and rain in the central,
north and eastern parts.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 5.5m over the north, central and
eastern parts, with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the east, reaching 25 to 35 in the south-east,
otherwise cyclonic 15 to 25, reaching 30 to 40 in places in the
western and southern parts.
VIS : Moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0m to 4.0m in the western and southern parts, reaching 4.5 to
5.5m in the south and west, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 15 to 25 reaching 30 to 35 in the south-west for the first
half of the period.
VIS : Good, but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m in the central and southern half, reaching 4.5 to
5.0m in the south for the first half of the period, with S to SW
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the south, otherwise E to SE 10 to 20.
VIS : Moderate to poor in showers and thundershowers in the southern and
central parts.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the northern parts, otherwise N to NW 15
to 25, reaching 30 to 35.
VIS : Good but moderate in showers and rain in the southern parts.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m 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)
26/08/01 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER CRO AND KER.
- SEVERE GALE FORCE 9 FORECAST OVER KER.
PART 2: GENERAL SYNOPSIS, 26/08/01 AT 0000UTC
- THUNDERY LOW 1010 NEAR 30S/43E, SLOW-MOVING.
- COLD FRONT AXIS 36S/48E, 37S65E, 42S/82E, WEAKENING.
- COLD FRONT AXIS 52S/25E, 54S/44E, 58S/50E, MOVING EASTWARDS AND FORECAST TO
PASS SOUTH OF CRO AND SOUTH OF KER.
- HIGH 1041 NEAR 45S/55E, MOVING SLOWLY TOWARDS THE ENE.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/01 AT 0600UTC TO 26/08/02 AT 0600UTC
WAM (30S/40S, 50E/65E)
RAIN OR SHOWERS, AT TIMES THUNDERY OVER NORTHWESTERN.
WIND : NORTHEAST 5 TO 6 LOCALLY 7, DECREASING 3 TO 4 IN THE SOUTH ;
NORTHEAST TO NORTHWEST 3 TO 4 IN THE SOUTH-EAST OF THE AREA AT END.
SEA : ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. SSW SWELL INCREASING OVER
SOUTH-EAST, 3 TO 5 METERS.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS BECOMING SCATTERED.
WIND :
NORTHERN HALF: SOUTHEAST TO SOUTH 3 TO 4, VEERING SOUTHEAST TO EAST 5 TO 6,
THEN DECREASING 4 TO 5 AT END.
SOUTHERN HALF: SOUTH 5 TO 6, BECOMING ANTICLOCKWISE 3 TO 5.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTHERN. SW SWELL INCREASING 3
TO 6 METERS FROM NORTH TO SOUTH.
VIS : MODERATE IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN OR FRONTAL SHOWERS OVER THE FAR SOUTH OF THE AREA.
WIND :
NORTHERN HALF: ANTICLOCKWISE 3 TO 4, VEERING NORTHEAST TO NORTH 5 TO
6 TO THE SOUTH.
SOUTHERN HALF: NORTHWEST TO WEST 6 TO 7 LOCALLY 8.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH IN THE SOUTHWEST AT FIRST.
SOUTH-WESTERLY SWELL 4 TO 7 METRES FROM WEST TO EAST, ABATING 2 TO 4
METRES AT END.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR FRONTAL SHOWERS OVER THE SOUTH OF THE AREA.
WIND : SOUTH TO SOUTHWEST 4 TO 5 IN THE NORTH-WEST OF THE AREA; ELSEWHERE 6
TO 7 LOCALLY 8 IN THE SOUTH-WEST OF THE AREA ; VEERING WEST TO
SOUTHWEST 4 TO 6 IN THE NORTH AND 6 TO 8 LOCALLY 9 IN THE SOUTH.
SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH, LOCALLY VERY HIGH OVER SOUTHERN. LONG SW SWELL
INCREASING 5 TO 8 M DURING THE DAY.
VIS : POOR IN PRECIPITATION.=