IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 18th OF JUNE
2024 AT 16:30 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 182200 TO 192200 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: NW to N 35 in the south-east but W to SW 35 in the
south-west.
2. MARION FORTIES EAST: N to NW 35 to 40 in the east at first.
SYNOPTIC CHART 12:00Z
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High 1024 hPa 27s20w High 1024 hPa 33s50e
Low 980 hPa 50s22e
Cold Front: 30s05e, 35s15e, 40s20e 45s25e into 50s22e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW to N 15 to 25 reaching 30 to 35 in the south-east, but
W to SW 15 to 25 in the west reaching 35 in the south-west.
VIS : Moderate in showers and rain.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the south, SW swell but
NW over the central parts.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 15 in the south-west, otherwise E to NE 15 to
25 but NW 10 to 20 in the extreme west.
VIS : Moderate in showers and rain in places.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 but variable 05 to 15 in the south.
VIS : Good but moderate in showers at times.
MADAGASCAR EAST:
WIND : S to SE 15 to 25 reaching 30 in the north but NE to E 10 to
20 in the south reaching 25 in the extreme north.
VIS : Moderate in showers and thundershowers at times.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 to 40 in the east at first,
otherwise W to SW 15 to 25.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the south, SW to W swell
but NW in the east.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/06/18 at 1700 utc
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than
averages given here).
PART 1: WARNING :
Gale force 8 expected over CRO.
PART 2: GENERAL SYNOPSYS, 24/06/18 at 1200 UTC :
Cold front (CF) over far eastern AMS at first, moving eastward.
High 1028 near 34S/54E, moving eastward.
Low 968 near 52S/27E, moving rather quickly south-eastward and deepening,
expected 940 near 60S/41E the 19/06 at 12UTC. Associated warm front (WG)
over south-western CRO at first, then over far western KER at end.
Associated cold front (CG) over south-wes tern CRO at end, preceded by
squalls line over north-western CRO and south-western WAM.
PART 3: FORECAST FOR 24 HOURS from 18/06/24 at 1800 UTC to 19/06/24 at
1800 UTC :
WAM (30S/40S,50E/65E) :
Few showers, but showers and squalls locally thundery in south-west at
end with squalls line.
WIND: SW 5/6 over far south-eastern at first, but anticlockwise 3/5
elsewhere. Becoming soon over south-western area NW 5/6 locally 7
with gusts.
SEA : Rough or very rough by SW swell 3 to 5 m abating 2 to 3 m, but
moderate over far north-western.
VISI: Good, but poor or very poor in precipitations at end.
AMS (30S/40S,65E/80E) :
Frontal rain and showers CF and squalls over far north-eastern.
Scattered showers elsewhere, more frequent in south.
WIND: NW 5/6 with gust ahead of CF, but backing W or SW 4/6 behind, then
anticlockwise 3/4 at end over western area.
SEA : Rough or very rough by SW swell 3 to 5 m behind CF.
VIS : Poor or very poor in precipitations.
CRO (40S/50S,50E/65E) :
Frontal rain and showers with WG and CG, locally thundery squalls with CG.
Showers and thundery squalls in north-west at end with squalls line.
WIND: W or SW 4/6 veering gradually NW 4/5 from west , then increasing
6/7 with gusts, locally 8 in the vicinity of CG. Backing SW 5/6 at
end over far south-western behind CG.
SEA : Rough or very rough. W to SW swell 3 to 5 m abating 2 to 4 m.
VIS : Poor or very poor in precipitations.
KER (40S/50S,65E/80E) :
Showers, then frontal rain and showers WG over far western at end (locally
snow over far south-western)
WIND: W or SW 5/6, locally 7 with gusts. Decreasing SW 4/5 later in west
but increasing NW 5/6 at end over far south-western.
SEA : Rough or very rough. W to SW swell 3 to 5 m.
VIS : Poor or very poor in precipitations.
ENDS DE CAPE TOWN RADIO/ZSC+
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