WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII WEST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
24TH OF JUNE 2026 AT 08:30 UTC.
NOTE: WX OBSERVATIONS.
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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 241000 TO 251000 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:
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1. TRISTAN: NW to N 35 in the south-west, spreading to the south-east
towards mid-period.
SYNOPTIC CHART 06:00Z
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High 1028 36s05w, High 1036 hPa 41s68e
Low 960 65s60e
1. Cold Front: 34s27e 40s37e 45s42e 50s47e into 65s60e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 20, reaching 25 in the west from mid-period.
VIS : Good, but moderate in showers and rain in the west and north-west.
SEA STATE: 3.0m in the south-west, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but S to SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to S 15 to 25 reaching 30 in the extreme south-east.
VIS : Good, but moderate to poor in showers and thundershowers in
the south-east at first.
SEA STATE: 3.0 to 4.0m in the south spreading to the north by mid-period,
reaching 4.5 to 5.0m in the south-east, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, reaching 30 to 35 in the south-west.
VIS : Good, but moderate to poor in showers and thundershowers in
the south-west reaching very poor at times.
SEA STATE: 3.0 to 3.5, reaching 4.0 to 4.5m in the south-west, with S to SE
swell.
TRISTAN (30S/40S, 00E/20W):
WIND : SE 10 to 20 in the extreme north-east, otherwise, NW to N 15 to 25
reaching 30 to 35 in the south-west, spreading to the south-east
towards mid-period.
VIS : Good, but moderate in showers and rain in the central south and
south-west.
SEA STATE: 3.0 to 3.5m in the north-east with SE swell, but 4.0 to 4.5m in
south-west, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 15 to 25, reaching 30 in the extreme north-west. It will
become NW 20 to 30 in the extreme south-west towards the end of
the period.
VIS : Good, but moderate in showers and rain in the northern parts,
including the east and south-eastern parts during the second half
of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the eastern parts until mid-period,
With S to SW swell.