AOR-E
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. WEST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 18th 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 181000 TO 191000 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 NW 35 to 40 in the central parts and south-east until
mid-period, but cyclonic 35 to 45 in the south-central
spreading towards the south-east towards mid-period.
2. CAPE WEST: W to NW 35 to 40 in the south-east at first and in the
south-west spreading to the central-south by mid-period.
SYNOPTIC CHART 06:00Z
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-High 1024 hPa 26s05e
-High 1028 hPa 32s55e.
-Low 1000 hPa 36s08w
Cold Front: 29s30w 34s04w into 36s08w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m in the south, SW swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 15 in the extreme east.
VIS : Good.
SEA STATE: 3.0m in the south, SW swell.
ST HELENA (15S/30S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 over the central parts, otherwise E to
SE 10 to 20 but N to NW 15 to 25 in the south, becoming S to
SW 15 to 25 in the south-west from mid-period.
VIS : Good, but moderate in rain and showers in the south-west
towards mid-period, spreading to the south-east towards the
end of the period.
SEA STATE: 3.0 to 4.0m, SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anti-cyclonic 05 to 15 in the south-west at first becoming W
to NW 10 to 20, otherwise S to SE 15 to 25.
VIS : Good.
SEA STATE: 3.0 to 4.0m, SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 20 to 30 reaching 35 to 40 in the central parts and
south-east until mid-period, but cyclonic 35 to 45 in the
south-central spreading towards the south-east towards mid-
period, while it becomes S to SW 20 to 30 in the west
spreading eastwards.
VIS : Moderate to poor in showers and rain in places.
SEA STATE: 4.0 to 5.0m, reaching 6.0 to 7.0m in th
