SECURITE
AOR-E
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII WEST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 13th OF AUGUST 2024 AT 08:30 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 131000 TO 141000 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. ST HELENA : W to NW 35 in the extreme south-west in the first half of
the period.
2. TRISTAN : NW 35 to 45 in the west from mid-period.
3. CAPE WEST : NW to W 35 to 40 in the east in the first half of the
period, but S to SW 35 to 45 in the east and central.
SYNOPTIC CHART 06:00Z
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High 31s08w 1024 hPa
High 31s42e 1025 hPa
Low 963 hPa 55s22e
Cold Front: 46s40e 52s35e 54s28e into 54s23e.
Cold Front: 35s09e 40s16e 44s20e into 45s20e.
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 : SE 10 to 20, but S to SW 10 to 15 in the extreme east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : W to NW 20 to 30 in the south-west reaching 35 in the extreme
in the first half of the period, otherwise E to S 10 to 20.
VIS : Good, but moderate in the south-west and south-central.
SEA STATE: 3.0 to 4.0m in the south reaching 5.5m in the south-west in
the second half of the period, SW swell but NW in the south-
west in the first half of the period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W to SW 10 to 20 in the south in the first half of the period,
otherwise SE to S 15 to 25.
VIS : Good.
SEA STATE: 3.0m in the south, SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 becoming NW 15 to 25 in the west from
mid-period reaching 35 to 45.
VIS : Good in the east, otherwise moderate to poor in showers and
rain.
SEA STATE: 3.0 to 4.0 reaching 5.0 to 6.0m in the west from mid-period, W
to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to W 15 to 25 in the east in the first half of the period,
reaching 35 to 40, otherwise S to SW 20 to 30 reaching 35 to
45 in the east and central. It will become anti-cyclonic 10 to
20 in the west and central by the second half of the period.
VIS : Good, but moderate to poor in showers and rain in the east.
SEA STATE: 4.0 to 6.0m but 6.5 to 8.5m in the south-east, W to SW swell.
ENDS THIS IS CAPETOWNRADIO
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