WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22nd OF JULY 2026 AT 16:30 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 222200 TO 232200 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. TRISTAN : W to NW 35 in the south-west until in the evening.
2. CAPE WEST: N to NW 35 in the east at first.
3. CAPE EAST: Cyclonic 35 to 40 in the west towards mid-period, spreading
to the central and north-west in the evening, while
moderating in the west.
4. DURBAN EAST: SW 35 in the south-west by the end of the period.
5. MARION FORTIES EAST: W to NW 35 to 40 in the south and south-eastern
parts, moderating in the south from mid-period, as
well as south-east in the evening.
SYNOPTIC CHART 12:00Z
=====================
High 1028 hPa 30s19w, High 1028 hPa 44s47e
Low 1024 hPa 38s45e, Low 929 hPa 60s13e
1. Cold Front: 32s06e 37s14e 41s18e 46s22e 51s25e 56s25e 60s24e 64s19e into
60s13e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20, reaching 25 in the west at first.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : SW 05 to 15 in the east, otherwise S to SE 05 to 15, reaching 20
in the south at first.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south, otherwise E to SE 15 to 25.
VIS : Moderate in light rain in the central and western parts, otherwise
good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south, otherwise S to SE 05 to 15
reaching 20 to 30 in places in the east and northern parts.
VIS : Good.
SEA STATE: 3.0m in the south by the end of the period, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the north, otherwise W to NW 15 to 25,
reaching 30 to 35 in the south-west until in the evening.
VIS : Good but moderate in showers and rain in the south and south-east
at first, as well as south-west from the afternoon.
SEA STATE: 3.0 to 4.0m in the east and southern parts, reaching 4.5 to 5.0m
in the south-east at first, as well as south-west from mid-period,
with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : N to NW 15 to 25 in the east, reaching 30 to 35 at first, but S to
SW 15 to 25 in the south-east, otherwise anti-cyclonic 05 to 15.
It will become W to NW 20 to 30 in the south-west from the
morning, spreading to the south towards the end of the period.
VIS : Good, but moderate in showers and rain in the east and south-east
as well as south-west.
SEA STATE: 3.0 to 4.0m over the west, east and southern half, reaching 5.0 to
6.0m in the south, spreading to the central and south-east from
mid-period, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15 in the east at first, otherwise W to NW 15
to 25, becoming cyclonic 15 to 25 in the west from the morning,
reaching 30 to 40 towards mid-period, spreading to the central and
north-west in the evening, while moderating in the west.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west and central parts, spreading to the west from the
morning.
SEA STATE: 3.0 to 4.0m (except in the north and north-east), reaching 4.5 to
5.0m in the south-west from mid-period, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 over the central and southern parts, but N to NE
20 to 30 in the south-west, becoming SW 20 to 30 from the evening
reaching 35 by the end of the period, otherwise E to SE 10 to 20,
reaching 25 in the north and north-east.
VIS : Good, becoming moderate to poor in showers and thundershowers in
the west and south-west from the afternoon.
SEA STATE: 3.0 to 3.5m in the south-west and north-east, with S to SE swell,
but SW in the south-west.
MOZAMBIQUE CHANNEL:
WIND : NE 05 to 15 in the south-west, otherwise S to SE 05 to 15
reaching 20 to 30 in the south-east.
VIS : Good.
SEA STATE: 3.0m in the south-east, with SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 05 to 15, reaching 20 to 25 in the south and northern
parts.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 3.5m in the south, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25, reaching 30 to 40 in the south and south-eastern
parts, moderating in the south from mid-period, as well as south-
east in the evening. It will become SW 15 to 25 in the west from
mid-period.
VIS : Good but moderate in showers and rain in the west and central
parts, spreading to the south-east from the morning.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south, with W to SW
swell, but NW swell in the south and west.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/22 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/07/22 AT 1200UTC
- COLD FRONT (CF) OVER FAR NORTH-EASTERN AMS VERY SLOW-MOVING
- COLD FRONT (CG) AXIS 38S/46E, 44S/64E, 50S/79E, STEADILY MOVING
NORTH-EASTWARD.
- HIGH 1027 NEAR 33S/54E, AND ANOTHER HIGH 1030 NEAR 43S/46E, MERGING
IN A SINGLE ONE EXPECTED 1036 NEAR 40S/63E AT END.
- COLD FRONT (CH) OVER FAR SOUTH-WESTERN CRO AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/22 AT 1800UTC TO 26/07/23
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN AND SHOWERS (CG) OVER FAR SOUTHERN AT FIRST, THEN
SCATTERED SHOWERS OVER SOUTHERN.
WIND: ANTICLOCKWISE 3/4 AT TIMES 5; BUT S 6/7 WITH GUSTS OVER FAR
SOUTH-EASTERN AT FIRST.
SEA : MODERATE TO ROUGH FROM NORTH TO SOUTH.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN AND SHOWERS (CF) OVER FAR NORTH-EASTERN. FRONTAL RAIN
AND SHOWERS (CG) OVER SOUTHERN SOON.
WIND:
NORTHERN HALF: VARIABLE 2/4, INCREASING SOUTHERLY 5/6 WITH GUSTS
LATER.
SOUTHERN HALF: W 5/6 AHEAD OF CG AT TIMES 7, BACKING SOUTHERLY
BEHIND. GUSTS.
SEA : ROUGH TO VERY ROUGH OVER SOUTHERN BY SW SWELL INCREASING AROUND
3M, BUT MODERATE TO ROUGH OVER NORTHERN.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS (CG) OVER NORTH-EASTERN AT FIRST, THEN OVER
FAR SOUTH-WESTERN (CH).
WIND: ANTICLOCKWISE 3/4 AT TIMES 5, BUT SW 6/7 WITH GUSTS OVER
EASTERN AT FIRST LOCALLY 8 OVER FAR SOUTH-EASTERN. INCREASING NW 6/7
WITH GUSTS OVER SOUTHERN LATER.
SEA : ROUGH TO VERY ROUGH BY SW SWELL 3 TO 5M, LOCALLY HIGH OVER FAR
SOUTH-EASTERN AT FIRST.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS (CG). SCATTERED SHOWERS BEHIND.
WIND: NW 5/6 AHEAD OF CG AT TIMES 7, BACKING SOUTH-WESTERLY 6/7
BEHIND AT TIMES 8. GUSTS. BECOMING ANTICLOCKWISE 3/4 OVER FAR
NORTH-WESTERN AT END.
SEA : ROUGH TO VERY ROUGH BY SW SWELL INCREASING 3 TO 5M, LOCALLY HIGH
OVER FAR SOUTH-WESTERN AT FIRST.
VIS : POOR IN PRECIPITATION.