AOR-E
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII WEST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 21st OF AUGUST 2024 AT 08:30 UTC.
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:
=======
FORECAST VALID FROM 211000 TO 221000 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: N to NW 35 to 40 in the east for the first half of the
period, otherwise W to SW 35 moderating towards the end of
the period.
2. CAPE WEST: N to NW 35 to 45 in the south-western parts.
SYNOPTIC CHART 06:00Z
=====================
High 1030 hPa 36s05e High 1032 hPa 30s54e.
Low 1000 hPa 39s23e Low 975 hPa 40s14w.
Cold Front 1: 29s16e 34s23e 35s24e 40s27e 41s26e into 39s23e.
Cold front 2: 28s30w 30s21w 34s13w 37s10w 41s10w into 40s14w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15 but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 05 to 15 in the north, otherwise N to NW 10 to 20
reaching 25 to 30 in the extreme south. It will become SW 10
to 20 in the south-western parts from mid-period.
VIS : Good but moderate to poor in showers and rain in the south.
SEA STATE: 3.0 to 4.0m in the extreme south-west, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25 reaching 30 in the south-east for the first
half of the period. It will become anticyclonic 05 to 15 in
the south-western parts from mid-period.
VIS : Good.
SEA STATE: 3.0m to 4.0m in the south-eastern parts, with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 30 to 40 in the east for the first half of the period,
otherwise W to SW 25 to 35 moderating towards the end of the
period.
VIS : Moderate in showers and rain but poor over the central and
eastern parts.
SEA STATE: 4.0 to 6.0m reaching 6.5 to 7.0m in the south for the first
half of the period, with W to NW swell, becoming W to SW swell
in the west from mid-period. It will subside to 3.0 to 4.0m in
the west and north from mid-period.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 20 to 30 in the east where it will become E to NE 20
to 30 from mid-period, otherwise N to NW 20 to 30 reaching 35
to 45 in the south-western parts. It will become W to SW 10 to
20 in the extreme south-west towards the end of the period.
VIS : Moderate in showers and rain in the south-east for the first
half of the period, otherwise good. It will become moderate to
poor in showers and rain in the south-western parts from mid-
period spreading to the western parts by end of the period.
SEA STATE: 3.0 to 4.0m in the extreme east reaching 4.5m in the extreme
south-east at first, with SW swell. It will become 3.5 to 4.5m
in the west from mid-period, with NW swell, reaching 5.5 to
6.5m in the south-west.
ENDS
THIS IS CAPE TOWN RADIO
NNNN
