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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 23RD OF JUNE 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 231000 TO 241000 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. MARION FORTIES EAST : N to NW 35 to 45 in the south-west from mid-
period.
SYNOPTIC CHART 06:00Z
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High 1036 hPa 43s37e
Low 1020 hPa 36s23e.
Low 1004 hPa 50s61e
1. Cold Front: 30s05e 35s12e 40s18e 45s20e 50s21e 55s20e 60s15e cont.
2. Cold Front: 34s48e 39s55e 44s59e 49s62e into 50s61e cont. 55s69e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 15 to 25 in the east, otherwise N to NE 15 to 25, but
W to NW 15 to 25 in the extreme west. It will become variable
05 to 10 in the extreme south-east towards the end of the
period.
VIS : Good, but moderate in showers and rain in the extreme south-
west by the end of the period.
SEA STATE: 3.0 to 4.0m, W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south-east at first, otherwise E to
SE 10 to 20 but NE 10 to 20 in the extreme south-west.
VIS : Good, but moderate in showers in places in the east.
SEA STATE: 3.0m in the south-central parts, S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : E to SE 10 to 20, reaching 25 in the south-east.
VIS : Moderate in showers, becoming good in the south by mid-period.
MADAGASCAR EAST:
WIND : E to SE 10 to 20, reaching 25 in the north-west.
VIS : Moderate in showers in places.
SEA STATE: 3.0m in the north, SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 in the extreme west, spreading to the east
towards the end of the period, reaching 35 to 45 in the south-
west from mid-period, otherwise anti-cyclonic 05 to 10, but S
to SW 15 to 25 in the extreme east at first.
VIS : Good, but moderate to poor in showers and rain in the south-
west from mid-period.
SEA STATE: 4.0 to 5.0m, becoming 3.0 to 3.5m in the north-west by mid-
period, spreading to north-east towards the end of the period
while reaching 6.0 to 7.0m in the extreme south-west, W to NW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/06/23 at 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here.).
PART 1: WARNING :
– Gale force 8 expected over CRO and KER.
PART 2: GENERAL SYNOPSYS, 24/06/23 at 0000 UTC :
– Low 1001 near 44S/84E, moving eastward.
– High 1036 near 38S/65E with a ridge toward southwest, slowly moving eastward.
– High 1034 near 39S/32E moving south-eastward and forecast 1041 over western CRO at end.
– Cold front 30S/42E, 41S/55E, 47S/60E, 52S/63E, moving North-eastward. Embedded low 1017 at end over north-western KER.
PART 3: FORECAST FOR 24 HOURS from 23/06/24 at 0600 UTC to 24/06/24 at 0600UTC :
WAM (30S/40S,50E/65E) :
Rain and frontal showers moving north-eastward with CF.
WIND: anticlockwise 3/5, increasing NW 6/7 ahead of CF and backing SW
then S 6/7 behind.
SEA : rough to very rough from north to south, temporary moderate over
North-western. SW swell 2 to 3 m.
VIS : poor under precipitation.
AMS (30S/40S,65E/80E) :
Frontal rain and showers over far southwestern with CF at end.
WIND: Anticlockwise 3/5, temporary SW 6/7 over far south-eastern at
start. Increasing NW 6/7 soon over southwestern ahead of CF.
SEA : rough to very rough temporary high over far south-eastern at start.
SW swell 3/4 m decreasing 2/3 m by western.
VIS : mainly good becoming poor over far southwestern at end
CRO (40S/50S,50E/65E) :
Rain and frontal showers with CF, leaving the area by north-eastern at end.
WIND: NW 7/8 ahead of CF, backing SW 6/7 behind locally 8 over far
north-eastern at end. Violent gusts near the front. Becoming
anticlockwise 3/5 by southwestern later.
SEA : very rough, temporarily high in the far south at start. W swell 3
to 5 m.
VIS : poor to very poor under precipitation.
KER (40S/50S,65E/80E) :
Frontal rains and showers with CF over southwestern soon.
WIND: Anticlockwise 3/5, temporary S 6/7 over far north-eastern at start.
Increasing NW 6/7 over southwestern ahead of CF and backing
southerly 6/7 locally 8 behind.
SEA : rough to very rough, temporary high over far north-eastern at
start. S swell 4/5 m over far north-eastern at start, W swell 2/3 m
increasing 4/5 m by western.
VIS : poor under precipitation.
ENDS THIS IS CAPE TOWN RADIO
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