SECURITE
IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 12th OF AUGUST 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 122200 TO 132200 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 : SW 35 to 40 in the east at first, otherwise NW 35 to 45
becoming SW 35 to 45 in the west from mid-period
2. DURBAN EAST: N to NE 35 tin the south-wet during the second half of
the period.
3. MARION FORTIES EAST: N to NW 35 to 45 in the south-east and east
central at first.
SYNOPTIC CHART 12:00Z
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High 35s30e 1020 hPa Low 1000 hPa 40s05w
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : SW 30 to 40 in the east at first, otherwise NW 15 to 25
reaching 35 to 45 becoming SW 30 to 40 in the west from mid-
period reaching 45
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.0 to 4.0m in the east, otherwise 5.0 to 6.0m reaching 7.0 to
8.0m in the west, SW to W swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE to E 15 to 25 in the east, otherwise N to NE 15 to 25
reaching 30 to 35 in the south-west during the second half of
the period.
VIS : Moderate in showers and rain at times, otherwise good.
SEA STATE: 3.0 to 4.0m, SW swell.
MOZAMBIQUE CHANNEL:
WIND : SE 10 to 20 reaching 25 in the south where it will become NE
to N 15 to 25 from mid-period.
VIS : Good, but moderate in the north.
SEA STATE: 2.0 to 2.5m in the south, SW swell.
SEA STATE: 2.5m in the extreme south, SW swell.
MADAGASCAR EAST:
WIND : SE 15 to 25 in the north, otherwise E to NE 15 to 25.
VIS : Good in the south-west, otherwise moderate in showers in
places.
SEA STATE: 3.0m in the extreme south, SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 to 45.
VIS : Moderate to poor in showers and rain.
SEA STATE: 4.0 to 5.0m reaching 6.0 to 7.0m, NW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/12 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 et AMS.
– Strong gale force 9 over CRO and KER.
– Storm force 10 over South-Western of KER at end.
PART 2: GENERAL SYNOPSYS, 24/08/12 at 1200 UTC :
– High 1026 hPa near 29S/70E, moving eastward 20/KT.
– Low 976 hPa near 52S/46E with cold front CF associated and axis 29S/43E, 32S/47E, 37S/52E moving Eastward 25kt.
PART 3: FORECAST FOR 24 HOURS from 12/08/24 at 1800 UTC to 13/08/24 at 1800 UTC :
WAM (30S/40S,50E/65E) :
Frontal showers and rain under CF. Squalls.
WIND: NW 4 to 6 ahead CF backing SW 6/8 behind CF. Gusts.
SE
