WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22nd OF JULY 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 221000 TO 231000 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 at times.
2. CAPE WEST: N to NW 35 in the south-east at first, as well as east
tomorrow morning.
3. CAPE EAST: Cyclonic 35 to 40 in the west towards the end of the period.
4. MARION FORTIES EAST: W to NW 35 to 40 in the west and south-west,
spreading to the south-east overnight while
moderating in the west and south-west.
SYNOPTIC CHART 06:00Z
=====================
High 1024 hPa 30s20w, High 1028 hPa 43s42e
Low 1024 hPa 36s42e, Low 930 hPa 58s09e
1. Cold Front: 31s01e 36s09e 41s14e 46s16e 51s18e 56s18e 59s16e 62s10e into
58s09e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20, reaching 25 in the west.
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 from mid-period.
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.
SEA STATE: 3.0m in the south-east at first, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south, otherwise S to SE 05 to 15
reaching 20 to 25 in places in the east and northern parts from
the evening.
VIS : Good.
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 at times.
VIS : Good but moderate in showers and rain in the south and south-west,
spreading to the south-east towards mid-period, clearing in the
south-west from tomorrow morning.
SEA STATE: 3.0 to 4.0m in the east and southern parts, reaching 4.5 to 5.0m
in the south-east until mid-period, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 10 in the north and west, but N to NW 15 to 25,
reaching 30 to 35 in the south-east at first, as well as east
tomorrow morning, otherwise W to SW 15 to 25.
VIS : Good, but moderate in showers and rain in the east and south-east.
SEA STATE: 3.0 to 4.0m over the southern half, spreading to the west and east
from mid-period, reaching 5.0 to 6.0m in the south, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to SE 15 to 25 in the south-east, but anti-cyclonic 05 to 15 in
the east, otherwise W to NW 15 to 25, reaching 30 in the south-
west. It will become cyclonic 15 to 25 in the west, reaching 30 to
40 towards the end of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
east until tomorrow morning, as well as south-west and central
parts from this afternoon, spreading to the west from tomorrow
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, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 over the central and southern parts, but NE 20
to 30 in the south-west, otherwise E to SE 10 to 20, reaching 25
in the north and north-east.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-west and north-east, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : NE 05 to 15 in the south-west, otherwise S to SE 05 to 15
reaching 20 to 25 in the south-east.
VIS : Good.
SEA STATE: 3.0m in the south-east from mid-period, 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 : Good but moderate in showers in the south and northern parts from
mid-period.
SEA STATE: 3.0m in the south, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the east at first, otherwise W to NW 15
to 25, reaching 30 to 40 in the west and south-west, spreading to
the south-east overnight while moderating in the west and south-
west.
VIS : Good but moderate in showers and rain in the west from this
afternoon, spreading to the central and south-east overnight.
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:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/22 AT 0600UTC
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, 26/07/22 AT 0000UTC
- COLD FRONT AXIS 39S/45E, 41S/50E, 43S/55E, 45S/61E, 47S/65E, 49S/97E MOVING EAST-NORTH-EASTWARD EXPECTED 36S/70E, 39S/75E, 41S/79E, 44S/81E AT END.
- HIGH 1026 HPA NEAR 34S/54E, EXPECTED 1031 HPA NEAR 35S/56E AT END.
- HIGH 1029 HPA NEAR 45S/36E, EXPECTED 1035 HPA NEAR 42S/58E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/22 AT 0600UTC TO 26/07/23 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS OVER FAR SOUTHERN LATER.
WIND : ANTICLOCKWISE 2 TO 4 BUT WESTERLY 5 OR 6 WITH GUSTS OVER FAR SOUTHERN
THEN SOUTH 5 OVER SOUTH-EASTERN AT END.
SEA : MODERATE, ROUGH OVER SOUTHERN. SOUTHERLY SWELL 2 OR 3 M OVER SOUTHERN
ABATING.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS BY SOUTH-WESTERN LATER.
WIND : VARIABLE 2 TO 4 SETTING-UP WEST 5 TO 6 BY SOUTH-WESTERN LATER AHEAD
THE FRONT, BACKING SOUTH 6 TO 7 BEHIND DURING THE NIGHT.
SEA : ROUGH, BECOMING MODERATE OVER NORTHERN LATER. SOUTH-WEST SWELL 3M,
DECREASING.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS.
WIND : NORTH-WEST 6 TO 7 AHEAD THE FRONT OVER NORTH-EASTERN, BACKING SOUTH-
WESTERLY 5 TO 6 BEHIND. ANTICLOCKWISE 2 TO 4 BY WESTERN LATER.
SEA : ROUGH TO VERY ROUGH. W THEN SW SWELL 4 OR 5 M.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS.
WIND : NORTH-WEST 5 TO 6 AHEAD THE FRONT, 7 IN VICINITY, BACKING SOUTH-WEST
5 TO 6 BEHIND, LOCALLY 7 LATER. GUSTS.
SEA : ROUGH TO VERY ROUGH.SOUTH-WESTERLY SWELL 3 TO 5 M.
VIS : POOR IN PRECIPITATION.