AOR-E
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII WEST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 07th OF AUGUST 2024 AT 16:40 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2 BELOW.
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 072200 TO 082200 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: W to SW 35 to 45 in the south spreading eastward. It will
become NW 35 to 40 in the north-west from mid-morning and
spreading to places in the central parts.
2. CAPE WEST: W to SW 35 to 45 in the extreme west from mid-morning
spreading eastward and reaching 50 in the extreme south.
3. CAPE EAST: N to NW 35 to 40 in the extreme west towards the end of
the period.
SYNOPTIC CHART 12:00Z
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Low 26s14e 1016 hPa
Low 47s18e 990 hPa
Low 42s11w 992 hPa
High 30s42e 1024 hPa
Cold Front 1: 35s15w, 40s07w into 42s11w (992 hPa).
Cold Front 2: 28s13w, 30s08w, 35s02e, 40s11e, 45s19e into 447s718e
(990 hPa).
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20 but S to SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : W to SW 10 to 20 in the south, otherwise E to SE 10 to 20, but
cyclonic 05 to 10 in the south-west spreading eastward. It
will become anti-cyclonic 05 to 15 towards the end of the
period and reaching 20 in the extreme south.
VIS : Good.
SEA STATE: 3.0 to 4.0m SW swell in the extreme south spreading northward
and reaching 5.0m in places.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, but W to NW 10 to 20 in the south reaching
30 from midnight in the extreme south. It will become SW 10 to
20 in the south-west from midday spreading eastwards.
VIS : Good but moderate in showers in the extreme south.
SEA STATE: 3.0 to 4.0m SW swell in the south reaching 4.5 to 5.0m in the
extreme south-west towards midday spreading eastward.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 15 to 25 reaching 35 to 45 in the south spreading
eastward. It will become NW 15 to 25 in the north-west mid-
morning and reaching 35 to 40 in places in the central parts
and spreading eastward.
VIS : Good in the extreme north, otherwise moderate to poor in
showers and rain.
SEA STATE: 3.0 to 4.0m SW swell in the north, otherwise 5.0 to 6.0m but
7.0 to 8.0m in the south spreading eastward and reaching 9.0
to 10.0m in places, subsiding in the south-west towards the
end of the period.
CAPE WEST (30S/40S, 00E/20E):
WIND : N to NW 15 to 25 reaching 30 in places spreading eastward. It
will become W to SW 25 to 35 in the extreme west from mid-
morning spreading eastward and reaching 45 to 50 in the
