WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22ND OF JUNE 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: S to SW 35 in the south-west at first.
2. CAPE WEST: W to SW 35 in the south-west spreading to the south and
south-east from mid-period, while moderating in the south-
west.
3. CAPE EAST: N to NW 35 in the south-west towards the end of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1028 43s27w, High 1028 hPa 33s43e
Low 971 hPa 51s03e
1. Cold Front: 31s12w 40s01w 45s03e 52s07e into 51s03e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
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 : E to SE 05 to 15, reaching 20 to 25 in the south at times from
mid-period.
VIS : Good, becoming moderate to poor in showers and thundershowers in
the south from mid-period.
SEA STATE: 3.0 to 4.0m in the south from mid-period, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W to SW 10 to 20 in the south, otherwise S to SE 05 to 15.
VIS : Good, becoming moderate in showers and rain in the south from the
evening.
TRISTAN (30S/40S, 00E/20W):
WIND : S to SW 15 to 25, reaching 30 to 35 in the south-west at first,
but anti-cyclonic 05 to 15 in the west spreading to the north and
east from tomorrow morning.
VIS : Good, but moderate in showers and rain in the east and south-east
until mid-period. It will become moderate to poor in showers and
thundershowers in the north from the evening.
SEA STATE: 3.5 to 4.5m over the southern half, spreading to the north from
mid-period, reaching 5.0 to 7.0m in the south and south-east, with
SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW 15 to 25 in the central and eastern parts, otherwise W to SW 15
to 25, reaching 30 to 35 in the south-west spreading to the south
and south-east from mid-period, while moderating in the south-
west.
VIS : Good, but moderate in showers and rain over the southern and
western parts, spreading to the east from mid-period while
clearing in the west.
SEA STATE: 3.0 to 4.0m in the south and west, reaching 5.0 to 7.0m in the
south-west, spreading to the west and south from mid-period, with
SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the east, otherwise N to NW 10 to 20
reaching 25 to 30 in the southern parts at times, as well as in
the west from mid-period, but 35 in the south-west towards the end
of the period.
VIS : Good, but moderate in showers and thundershowers in the central
and western parts. It will become moderate in showers and rain in
the west from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-east until tomorrow
morning, with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 05 to 15 in the east and south-east, otherwise N to
NE 15 to 25.
VIS : Good, but moderate in showers and thundershowers in places in the
west and central parts.
SEA STATE: 3.0 to 4.0m in the north and east, spreading to the south from
mid-period, with S to SE swell, but SW in the south.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the central parts, otherwise E to SE 05 to
15, reaching 20 to 25 in the south-east at first, as well as
north-west.
VIS : Good, but moderate in showers and rain in places in the north-west
until mid-period.
SEA STATE: 3.0m in the southern parts at first, with SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20, reaching 25 to 30 in the north.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW 15 to 25 in the north, but W to SW 15 to 25 in the south and
south-east, otherwise anti-cyclonic 05 to 15. It will become N to
NW 20 to 30 in the west from mid-period, spreading to the central
and south-east by the end of period.
VIS : Good, but moderate in showers and rain in the north.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 7.0m in the east and southern half,
subsiding in the east from mid-period as well as south from
tomorrow morning, 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)
26/06/22 AT 0500UTC
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 WAM, AMS, CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/06/22 AT 0000UTC
- COLD FRONT (CF) AXIS 24S/71E, 30S/73E, AND 37S/69E, AND WARM FRONT
(WF) AXIS 37S/67E, 40S/73E, AND 41S/77E, ASSOCIATED WITH A LOW-PRESSURE SYSTEM OF 1004 HPA MOVING SLOWLY EASTWARD.
- COLD FRONT CG EXTENDING FROM 44S/70E, 45S/80E, 50S/83E, MOVING SLOWLY EASTWARD.
- HIGH-PRESSURE SYSTEM AT 1031 HPA NEAR 34S/45E, EXPECTED 1032 HPA NEAR 35S/53E BY THE END, WITH A RIDGE EXTENDING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/22 AT 0600UTC TO 26/06/23 AT 0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND THUNDERSTORMS IN THE FAR EASTERN PART OF THE REGION, FOLLOWED BY SCATTERED SHOWERS.
WIND : SOUTHERLY 5 TO 6, 7 TO 8 IN THE EASTERN PART OF THE REGION WITH GUSTS,
SHIFTING TO ANTICYCLONIC 3 TO 4 FROM THE WEST DURING THE DAY.
SEA : ROUGH TO VERY ROUGH. SOUTHWEST SWELL 3 TO 4 M.
VIS : GOOD.
AMS (30S/40S, 65E/80E)
SHOWERS AND SQUALLS WITH WF AND CF.
WIND : LOW-PRESSURE SYSTEM WINDS 5 TO 7; INCREASING SOUTH 6 TO 8 OVER WESTERN
REGION.
SEA : MODERATE TO ROUGH BECOMING ROUGH TO VERY ROUGH. CLOCKWISE SWELL
3 TO 4 M, FOLLOWED BY A SOUTHWEST SWELL OF 3 TO 5 M OVER SOUTHERN
REGION.
VIS : VERY POOR DURING PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS WILL BECOME MORE FREQUENT WITH THE ARRIVAL OF A STATIONARY FRONT OVER THE NORTHERN REGION TOWARD THE END OF THE FORECAST PERIOD.
WIND : WEST AT 5 TO 6, INCREASING 7 TO 8 OVER SOUTHERN REGION, WITH GUSTS
BECOMING ANTICLOCKWISE 3 TO 5 OVERNIGHT.
SEA : ROUGH TO HIGHFROM NORTH TO SOUTH. SOUTHWEST SWELL 3 TO 5 M, INCREASING
TO 4 TO 6 M OVER SOUTHERN ZONE.
VIS : GOOD, THEN POOR DURING PRECIPITATION OVER NORTHERN ZONE.
KER (40S/50S, 65E/80E)
RAIN AND SHOWERS WITH COLD FRONT AT THE START OF THE PERIOD. SHOWERS, SOMETIMES SNOWY, OVER FAR SOUTHERN.
WIND : WEST 3 TO 5 OVER NORTHERN, AHEAD OF A COLD FRONT; SHIFTING TO WEST 5
TO 7, LOCALLY 8, OVER FAR SOUTHERN, THEN SETTING-UP SOUTHWEST
5 TO 7, LOCALLY 8, BY THE END OF THE PERIOD.
SEA : ROUGH TO VERY ROUGH, BECOMING HIGH OVER WESTERN PART OF THE REGION
OVERNIGHT. SOUTHWEST SWELL 3 TO 4 METERS, INCREASING TO 4 TO 6 METERS
LATER.
VIS : POOR TO VERY POOR DURING PRECIPITATION.