WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
01ST OF AUGUST 2026 AT 16:00 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 012200 TO 022200 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: S to SW 35 in the south-west and south for the first half of
the period.
2. TRISTAN : Cyclonic 35 to 40 in the north and north-east until mid- period,
but W to NW 35 from mid-period.
3. CAPE EAST: E to NE 35 in the west at times until mid-period, otherwise E
to SE 35 to 40 at times in the central, eastern and northern
parts until mid-period.
4. DURBAN EAST: N to NE 35 in the south-east otherwise cyclonic 35 to 40 in
places in the western and southern parts until mid-period.
5. MOZAMBIQUE CHANNEL: S to SW 35 in the south-west at first.
6. MARION FORTIES EAST: N to NW 35 in the southern parts.
SYNOPTIC CHART 12:00Z
=====================
High 1032 hPa 33s29w, High 1040 42s60e.
Low 1010 hPa 29s42w, Low 1008 hPa 33s07w.
1. Cold front: 23s19w 26s13w 29s11w into 33s07w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20 but variable 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE 10 to 20 in the north and western parts, otherwise W to NW 15
to 25, but S to SW 25 to 35 in the south-west and south for the
first half of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the south and south-east.
SEA STATE: 3.0 to 4.0m in the south and west, reaching 4.5 to 5.0m in
the south-west and south, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 15 in the south and west, otherwise S to SE 05 to
15 but N to NW 10 to 20 in the south-west.
VIS : Good but moderate in showers and thundershowers in the south-west
towards the end of the period.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 15 to 25 in the north and north-east, reaching 35 to 40
until mid-period, but W to NW 15 to 25 in the south-west, reaching 30 to 35 from mid-period.
VIS : Moderate to poor in showers and thundershowers in places in the
north-east.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the north and north-east
but in the south-west from mid-period, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : E to NE 10 to 20 in the south-east, but variable 05 to 15 in the
central and northern parts, otherwise N to NW 15 to 25 but S to SE 10 to 20 in the south-west.
VIS : Good, but moderate in showers and rain in the south-west and
north-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 until
mid-period, otherwise E to SE 15 to 25, reaching 30 to 40 at times in the central, eastern and northern parts until mid- period.
VIS : Good but moderate to poor in showers and thundershowers in the
central, northern and eastern parts.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m over the north, central and
eastern parts, for the first half of the period 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 until mid-period.
VIS : Moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0m to 4.0m, reaching 4.5 to 5.5m in the south and west until
mid-period, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 15 to 25 reaching 30 to 35 in the south-west at first.
VIS : Good, but moderate in showers and thundershowers in the southern
parts.
SEA STATE: 3.0 to 4.0m in the southern parts, reaching 4.5m in the southern
parts until mid-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.
SEA STATE: 3.0m in the south-east from mid-period, with W to SW swell.
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 at times.
VIS : Good.
SEA STATE: 3.0 to 4.0m reaching 4.5 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)
26/08/01 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE TO LOCALLY SEVERE GALE CONTINUING OR EXPECTED OVER CRO AND
KER.
PART 2: GENERAL SYNOPSIS, 26/08/01 AT 1200UTC
- THUNDERY LOW 1010 NEAR 29S/43E, SLOW-MOVING.
- COLD FRONT AXIS 39S/48E, 36S/65E, 35S/82E, WEAKENING.
- COLD FRONT OVER SOUTH OF CRO AND SOUTH OF KER.
- HIGH 1040 NEAR 42S/61E, MOVING SLOWLY TOWARDS THE EAST-NORTHEAST.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/01 AT 1800UTC TO 26/08/02
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN OR SHOWERS, AT TIMES THUNDERY IN NORTHWEST.
WIND: NORTHEAST 5 TO 6, AT TIMES 7 WITH GUSTS, BUT ANTICLOCKWISE 3 OR
4 IN FAR SOUTHEAST.
SEA : ROUGH OR VERY ROUGH. LONG S/SW SWELL 4 OR 5 M IN EAST, ABATING
LATER.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED FRONTAL RAIN OR SHOWERS.
WIND: SOUTHEASTERLY 5 OR 6, BECOMING ANTICLOCKWISE 3 TO 5 IN WEST,
INCREASING SOUTHWEST 5 OR 6 LATER IN FAR SOUTHEAST, AT TIMES 7 WITH
GUSTS.
SEA: ROUGH OR VERY ROUGH IN LONG S/SW SWELL, LOCALLY HIGH IN SOUTH.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONAL RAIN OR SHOWERS IN SOUTH.
WIND: WESTERLY 7 OR 8 WITH SEVERE GUSTS, DECREASING SOON 5 OR 6 IN
WEST, BUT ANTICLOCKWISE 3 TO 5 IN FAR NORTH.
SEA: ROUGH OR VERY ROUGH, LOCALLY HIGH IN SOUTHEAST, DECREASING LATER
LOCALLY MODERATE IN NORTH. SW SWELL 4 OR 5 M IN SOUTHEAST.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS IN SOUTH.
WIND: WESTERLY 7 OR 8, OCCASIONALLY 9 WITH SEVERE GUSTS, BUT
ANTICLOCKWISE 3 TO 5 IN FAR NORTHEAST AT FIRST.
SEA: VERY ROUGH OR HIGH, BECOMING LOCALLY VERY HIGH IN EAST LATER. SW
6 OR 7 M IN NORTH, ABATING SOON.
VISI: POOR IN PRECIPITATION.=