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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 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 031000 TO 041000 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: W to SW 35 in the west from mid-period, reaching 40 in the
extreme south-west.
2. MARION FORTIES EAST: W to NW 35 to 40 in places in the west towards
the end of the period.
SYNOPTIC CHART 06:00Z
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High 1022 hPa 25s58e
Low 1014 hPa 35s44e
Low 980 hPa 62s29e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : Cyclonic 15 to 30 in the extreme north-east at first,
otherwise anti-cyclonic 05 to 15, but N to NW 20 to 30 in the
west, spreading eastwards towards mid-period. It will become W
to SW 25 to 35 in the west from mid-period, reaching 40 in the
extreme south-west.
VIS : Good but moderate in showers and rain in places the south and
east places in the first half of the period, as well as in the
extreme west by the second half of the period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the west from mid-period,
but 7.0m in the extreme south-west towards the end of the
period, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 15 to 25 in the east, reaching 30 in the south-east
at times, otherwise Anti-cyclonic 05 to 15, but NE 20 to 30 in
the extreme east.
VIS : Good but moderate in showers and rain in placed in the east.
SEA STATE: 3.0 to 4.0m, in the south, SW swell.
MOZAMBIQUE CHANNEL:
WIND : Anti-cyclonic 05 to 10 in the south at first, otherwise S to
SE 10 to 20, but E to NE 10 to 15 in the south-west towards
mid-period.
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 in the extreme north.
VIS : Good, but moderate in showers and rain in places at times.
SEA STATE: 3.0 to 3.5m in the east at first, SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25, reaching 30 in places but 35 to 40 in the
places in the west towards the end of the period.
VIS : Good but moderate to poor in showers and rain in places.
SEA STATE: 4.0 to 5.0m reaching 6.0 to 6.5m in the east at first, SW to W
swell.
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
