WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19TH 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 191000 TO 201000 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: NW 35 in the south-east, but S to SE 35 in the south,
drifting to the south-east towards the end of the period.
2. CAPE EAST: S to SW 35 to 40 over the eastern half until towards the
end of the period.
3. MARION FORTIES EAST: S to SW 35 to 40 in the north and north-east
until mid-period, becoming NW 35 in the south-
west towards mid-period, spreading to the south-
east towards the end of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1031 hPa 39s20e
Low 1004 hPa 42s08w, Low 992 hPa 45s56e
1. Cold Front: 25s20w 30s16w 35s12w into 42s08w
2. Cold Front: 31s37e 35s47e 40s56e into 45s56e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15, reaching 20 in the east at first.
VIS : Good.
SEA STATE: 3.0m in places at first, with E to SE swell.
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 and west at first.
VIS : Good.
SEA STATE: 3.0m in the south and west at first, with SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south-east, otherwise E to SE 05 to
15 reaching 20 in the south-west, but NW 15 to 25 in the south
until towards mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in
the south-west, drifting to the south and west towards the end
of the period.
SEA STATE: 3.0 to 4.0m in the south-west, with S to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the east, otherwise S to SE 10 to 20,
becoming NW to N 10 to 20 in the east and south-east towards
the end of the period.
VIS : Good, but moderate in showers and thundershowers in the extreme
south-east until mid-period.
SEA STATE: 3.0 to 3.5m in the north and east at first, with S to SE
swell.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NE 05 to 15 in the north-east at first, otherwise NW 15
to 25 reaching 30 to 35 in the south-east, but S to SE 15 to
25 in the west reaching 30 to 35 in the south, drifting to the
south-east towards the end of the period, while becoming
anticyclonic 05 to 15 in the west.
VIS : Good, but moderate to poor in showers and thundershowers in
the western half, drifting to the eastern half towards the end
of the period.
SEA STATE: 3.5 to 4.5m in the southern and western halves, reaching 5.0m
in the south and south-east until mid-period, with S to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW 20 to 30 in the south-west, otherwise S to SE 10 to 20
reaching 25 to 30 in the east until mid-period, while becoming
NE 10 to 20 in the south-east, spreading to the north-east towards
the end of the period.
VIS : Good, becoming moderate in showers and rain in the south-west
towards the end of the period.
SEA STATE: 3.0 to 3.5m in the south-west, but in the east and south-east
until mid-period, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 15 to 25 reaching 30 to 40 over the eastern half until
towards the end of the period, but E to NE 10 to 20 in the
west, reaching 25 to 30 in the north-west from mid-period.
VIS : Good, but moderate in showers and rain over the eastern half
until towards the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 7.0m in the central parts,
drifting to the eastern parts towards the end of the period,
with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : W to SW 10 to 20, reaching 25 to 30 in the south and west but
35 in the extreme south, spreading to the eastern half towards
the end of the period. It will become S to SE 15 to 25 in the
west towards mid-period and E to NE 10 to 20 in the south-
west.
VIS : Moderate in showers and thundershowers, becoming good from the
south-west towards mid-period, but over the central parts
towards the end of the period.
SEA STATE: 3.0 to 3.5m, reaching 4.0 to 6.0m in the south, spreading over
the central and eastern half towards the end of the period,
with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : W to SW 05 to 15 in the south-east, otherwise S to SE 05 to 15,
reaching 20 to 30 in the south-west, spreading over the southern
half towards the end of the period.
VIS : Good, but moderate in showers and rain in the south-west,
spreading over the southern half towards the end of the period.
SEA STATE: 3.0 to 4.0m in the south towards the end of the period, with S
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise E to SE 10 to 20,
reaching 25 in the extreme north-west. It will become SW 05 to
15 in the south towards mid-period, but 20 to 30 towards the
end of the period.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m in the south towards the end of the period, with S
to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : S to SW 15 to 25 reaching 30 to 40 in the north and north-east
until mid-period. It will become NW 15 to 25 in the west
towards mid-period, reaching 30 to 35 in the south-west,
spreading to the south-east towards the end of the period.
VIS : Good, but moderate in showers and rain in the north until mid-
period, but in the south-west towards mid-period, spreading to
the south-east towards the end of the period.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 7.0m in the north until mid-
period, but in the south towards the end of the period, with W
to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/06/19 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALES FORCE 8 OVER WAM AND CRO.
PART 2: GENERAL SYNOPSIS, 2026/06/19 AT 0000UTC
- LOW 995 HPA NEAR 43S/75E WITH ASSOCIATED COLD FRONT (CF), AXIS 30S/69E,
40S/75E, 43S/75E, MOVING EASTWARD.
- LOW 990 HPA NEAR 45S/50E WITH ASSOCIATED COLD FRONT (CG), AXIS 40S/50E,
43S/53E, 45S/50E. EXPECTED 989 HPA NEAR 45S/69E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 2026/06/19 AT 0600UTC TO 2026/06/20 AT 0600UTC
WAM (30S/40S, 50E/65E)
RAIN AND FRONTAL SHOWERS CG.
WIND: WESTERLY TO NORTH-WEST 6/7 WITH GUSTS AHEAD OF THE FRONT CG,
TEMPORARILY BACKING WESTERLY TO SOUTH-WEST 4/6 IN THE SOUTH-WEST, THEN
INCREASING SOUTHERLY 6/7, LOCALLY 8 IN WEST LATER.
SEA : ROUGH TO VERY ROUGH, BECOMING VERY ROUGH TO HIGH LATER IN THE FAR WEST.
SOUTH-WESTERLY SWELL 3/5 METERS BEHIND CG.
VIS : POOR TO VERY POOR DURING RAINFALL.
AMS (30S/40S, 65E/80E)
RAIN AND FRONTAL SHOWERS CF THEN CG.
WIND: NORTHERLY 5/6 AHEAD CF, BACKING WEST TO SOUTH-WEST 4 TO 5 BEHIND, THEN
INCREASING NORTH-WESTERLY 5/6, LOCALLY 7, OVER THE SOUTH-WESTERN HALF
AHEAD OF CG.
SEA : ROUGH, LOCALLY VERY ROUGH IN THE SOUTH. SOUTH-WESTERLY SWELL, 2 TO 4
METERS.
VIS : POOR TO VERY POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS CG.
WIND: CLOCKWISE 6/7, LOCALLY 8 WITH CG, SETTLING SOUTHERLY 4/6 IN THE SOUTH
AND 6/7 LOCALLY 8 IN THE NORTH, THEN WESTERLY 6/7 OVER THE SOUTH-WEST
LATER. BUT VARIABLE2/4 IN SOUTH-EAST AT FIST.
SEA : ROUGH TO VERY ROUGH. WESTLEY SWELL 2 TO 4 METERS, THEN SOUTHERLY SWELL
2 TO 4 METERS IN THE NORTH-WEST.
VIS : POOR TO VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS UNDER A COLD FRONT IN THE EASTERN SECTOR AT THE START OF THE PERIOD, FOLLOWED BY RAIN AND FRONTAL SHOWERS UNDER A WARM FRONT IN THE WESTERN SECTOR TOWARDS THE END OF THE PERIOD.
WIND: VARIABLE 2/4 IN THE NORTH AND WESTERLY 4/6 IN THE SOUTH, LATER BECOMING
CLOCKWISE 6/7 WITH GUSTS BY THE WEST WITH CG. BUT NORTHERLY 6/7 IN THE
FAR NORTH-EAST AT THE START WITH CF.
SEA : ROUGH TO VERY ROUGH. WESTERLY SWELL 3 TO 5 METERS DECREASING, THEN
NORTH-WESTERLY SWELL 2 TO 4 METERS WITH CG.
VIS : POOR TO VERY POOR IN PRECIPITATION.