IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 01st OF AUGUST 2024 AT 17:00 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 012200 TO 022200 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 in the extreme west spreading to the
south east by the end of the period.
SYNOPTIC CHART 12:00Z
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Low 976 hPa 53s07e
Cold front: 33s09e 40s19e 45s29e 50s30e into 55s17e into 53s07e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 25 to 35 in the east otherwise W to NW 15 to 25
reaching 30 in the south-east .
VIS : Moderate in showers and rain, clearing from the north west.
SEA STATE: 3.5 to 4.5m SW swell reaching 5.5 to 6.5m in the east at
first.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : W to SW 20 to 30 but anti-cyclonic 10 in the west spreading to
the central parts by the end of the period.
VIS : Good in the west, otherwise moderate in showers and rain.
SEA STATE: 3.0 to 4.0m SW swell reaching 5.0 to 6.0m in places in the
extreme south east at first, S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, but NE 10 to 20 in the south west at times.
VIS : Good but moderate in showers in the north.
SEA STATE: 3.0m SW swell in the extreme south.
MADAGASCAR EAST:
WIND : SE 10 to 20 in the north, but SW 10 to 20 in the south.
VIS : Good, but moderate in showers and rain over the central parts.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 20 to 30 in the north east and north, otherwise but N
to NW 20 to 30 in the west reaching 35 in the extreme west
spreading to the south east by the end of the period.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.5 to 4.5m reaching 5.5 to 6.5m, but 7.0 to 8.0m in the
west second half of the period, W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/01 at 1700 utc
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here).
PART 1: WARNING :
– Gale force 8 over WAM, AMS, CRO and KER
– Strong gale force 9 over WAM and CRO.
PART 2: GENERAL SYNOPSYS, 24/08/01 at 1200 UTC :
– Low 959 hPa near 56S/62E moving south-eastward at 10/15 kt and associated with a cold front (CF) axis 59S/67E, 53S/78E, 37S/75E moving south-eastward at 30/35 kt.
– Low 966 hPa near 46S/55E moving south-eastward 35/40 kt and associated with a cold front (CG) axis 50S/59E, 40S/64E, 30S/52E and a warm front (WG) axis 50S/59E, 48S/67E, 43S/73E moving eastward at 20/25 kt.
PART 3: FORECAST FOR 24 HOURS from 01/08/24 at 1800 UTC to 02/08/24 at 1800 UTC :
WAM (30S/40S,50E/65E) :
Rain, squalls and frontal showers (CG). Violent gusts.
WIND: W to SW 7 to 9, locally NW 6 to 8 at the beginning of the period
over the far south-eastern area, soon becoming south-westerly 5 to
8 and becoming westerly 4 to 7 at the end of the period.
SEA : high to very high. SW swell 6 to 8m..
VIS : very poor in precipitations.
AMS (30S/40S,65E/80E) :
Rain and frontal showers under CF at the beginning of the period over the eastern area, then under CG soon. Violent gusts.
WIND: NW to N 4 to 7 from east to west, becoming N then W 6 to 8 soon and
becoming SW 7/8 locally 9 at the end of the period.
SEA : rough becoming very rough to very high from the west. Westerly
swell 2 to 4m, increasing SW 5 to 8m by the end of the period.
VIS : very poor in precipitations.
CRO (40S/50S,50E/65E) :
Rain and frontal showers, thundery squalls at times (CG). Violent gusts.
WIND: north-westerly 4/5 ahead of the front, backing SW 6 to 9 behind,
then decreasing soon westerly 5 to 7, then increasing westerly 7 to
9 at the end.
SEA : very rough to very high from south to north. Westerly swell 6 to
8m.
VIS : very poor in precipitations.
KER (40S/50S,65E/80E) :
Rain and frontal showers under CF at the beginning of the period over the eastern area, then under CF. Violent gusts.
WIND: variable and weak over eastern area, northerly 5 to 7 over western
area becoming clockwise 5/6, then SW 7/8.
SEA : rough to very rough, becoming very rough to high. Westerly swell
3/4m, increasing 4 to 6m.
VIS : very poor in precipitations.
ENDS DE CAPE TOWN RADIO/ZSC+
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