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WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII, EAST OF 20E ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 3rd OF AUGUST 2024 AT 13:30 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 032200 TO 042200 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. CAPE EAST: N to NW 35 in the central parts. It will become W to SW 25
to 35 in the extreme west towards mid-period, spreading to
the central parts whilst reaching 40 in places.
2. DURBAN EAST: SW 35 in the extreme south-west towards the end of the
period.
3. MARION FORTIES EAST: NW to W 35 to 45 in the west towards the end of
the period. It will become SW to S 35 in the west
towards the end of the period, reaching 45 to 50
in places.
SYNOPTIC CHART 12:00Z
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High 1020 hPa 28s38e
Low 1016 hPa 34s48e
Low 980 hPa 61s29e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15 in the east, otherwise N to NW 15 to
25, reaching 35 in the central parts. It will become W to SW
25 to 35 in the extreme west towards mid-period, spreading to
the central parts whilst reaching 40 in places.
VIS : Good but moderate in showers and rain in the extreme south-
west and spreading northwards and eastwards to cover the west-
central parts by mid-period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the west towards mid-
period but 7.0m in places in the west in the second half of
the period, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 15 to 25 in the east, reaching 30 in places at first,
otherwise Anti-cyclonic 05 to 15, but N to NE 20 to 30 in the
west. It will become SW 25 to 35 in the extreme south-west
towards the end of the period.
VIS : Good but moderate in showers and rain in placed in the east,
as well as in the extreme south-west towards the end of the
period.
SEA STATE: 3.0 to 4.0m, in the south, reaching 5.0 to 6.0m in the extreme
south-west towards the end of the period, SW swell.
MOZAMBIQUE CHANNEL:
WIND : NE 10 to 20 in the south-west, otherwise SE to S 10 to 20.
VIS : Good but moderate in showers in the extreme north at times.
MADAGASCAR EAST:
WIND : Variable 05 to 10 in the south, otherwise SE to E 10 to 20,
reaching 25 at times in the extreme north-west.
VIS : Good, but moderate in showers and rain in places in the north.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW to W 15 to 25, reaching 30 in places but 35 to 45 in the
west towards the end of the period. It will become SW to S 25
to 35 in the west towards the end of the period, reaching 45
to 50 in places.
VIS : Good in the north-east at first, otherwise moderate to poor in
showers and rain in places.
SEA STATE: 3.5 to 4.5m reaching 5.5m in the east at first, SW swell. It
will become 5.0 to 6.0m NW to W swell in the west in the
second half of the period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/03 at 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here.).
PART 1: WARNING:
– Gale over southern, WAM and AMS.
– Strong gale running over CRO.
– Storm over KER.
PART 2: GENERAL SYNOPSYS, 24/08/03 at 0000 UTC:
– Cold front axis 44S/48E, 47S/55E, 50S/57E moving eastward rapidly.
– Deepening low over far north-western WAM.
PART 3: FORECAST FOR 24 HOURS from 03/08/24 at 0600 UTC to 04/08/24 at
0600UTC:
WAM (30S/40S, 50E/65E):
Showers. Severe gusts over southern. Squalls over north-western area at end.
WIND: W or SW 3 to 5 over northern, 5 to 7 over southern at firs.
Increasing 6 to 7 locally 8 over south-eastern soon, E 5/6 over far
north-western. Gusts.
SEA : Very rough to high. Long SW swell 6/8 m abating 3/5m by western
area.
VIS : Poor in precipitation.
AMS (30S/40S, 65E/80E):
Gale. Severe gusts.
WIND: W 4 to 6 in north. W 6 to 7 locally 8 in south.
SEA : High, becoming very rough over northern area soon. Long SW swell
6/8m abating gradually over northern.
VIS : Poor in precipitation.
CRO (40S/50S, 50E/65E):
Showers and squalls. Severe gusts.
WIND: W or SW 8/9 decreasing by western area later.
SEA : High, becoming gradually very rough by western area soon. W swell
5/7m with severe wind sea.
VIS : Poor in precipitation.
KER (40S/50S, 65E/80E):
Rain, showers and thundery squalls. Severe gusts.
WIND: W, 6 to 8 , locally 9/10 over northern. W 5 to 7 over southern
increasing locally 8 over far southern area at first.
SEA : High in north, very rough to high in south. W swell 6/8m.
VIS : Poor in precipitation.
ENDS DE CAPE TOWN RADIO/ZSC+
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