SECURITE
IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 14th 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 141000 TO 151000 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 : N to NW 35 to 45 in the extreme south-east until mid-
period, otherwise W to SW 35 to 45, moderating in the
west by mid-period.
4. DURBAN EAST: S to SW 35 in the south-west until mid-period.
5. MARION FORTIES EAST: N to NW 35 to 45 in places in the east, otherwise
W to SW 35 to 40, reaching 50 in the south-west by the
end of the period.
SYNOPTIC CHART 06:00Z
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Low 992 hPa 38s38e
Low 952 hPa 53s38e
Cold Front: 27s35e 32s35e 37s38e into 38s38e cont. 43s42e 48s45e 53s43e
into 53s38e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 25 to 30 in the extreme east until mid-period,
reaching 35 to 45 in the extreme south-east, otherwise W to SW
30 to 40, reaching 45 in the north-west at first, moderating
to 15 to 25 in the west by mid-period.
VIS : Moderate in showers and rain, becoming good in the extreme
west towards the end of the period.
SEA STATE: 4.0 to 5.0m in the north-east, otherwise 6.0 to 7.0m, reaching
8.0 to 9.0m in the west at first, spreading to the central
parts by mid-period, S to SW swell, but NW in the east until
mid-period.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SW 15 to 25 in the west, spreading to the south-east by
the end of the period, reaching 35 in the south-west until
mid-period, otherwise N to NW 15 to 25.
VIS : Good, but moderate in showers and rain in places in the south
and east.
SEA STATE: 3.0 to 4.0m, except in the north-east, reaching 5.0 to 6.0m in
the south-east, but 7.0 to 8.0m in the extreme south-west, S
to SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NW 15 to 25 in the extreme south, otherwise variable 05
to 10, becoming S to SE 10 to 20 towards the end of the
period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the extreme south by the end of the period, SW
swell.
MADAGASCAR EAST:
WIND : SE 15 to 25 in the north, otherwise E to NE 15 to 25.
VIS : Moderate in showers in places, but good in the south.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 in the east, 35 to 45 in places, otherwise W
to SW 30 to 40, reaching 50 in the south-west by the end of
the period.
VIS : Moderate to poor in showers and rain at times.
SEA STATE: 5.0 to 6.0m, but 7.0 to 8.0m in the west where it will reach
9.0 to 10m in places, W to NW swell. It will become 11.0 to
11.5m, SW swell in the south-west by the end of the period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/14 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 over WAM and AMS.
– Strong gale force 9 over CRO and KER.
PART 2: GENERAL SYNOPSYS, 24/08/14 at 0000 UTC :
– High 1027 hPa near 32S/61E, expected 1032 hPa near 32S/73E at the end.
– Low 965 near 49S/79E with CF cold front leaving East AMS and East KER soon.
– Cold front CG, arriving soon over WAM and CRO with low 942hPa near 49S/33E, expected 944 hPa near 52S/41E at the end.
PART 3: FORECAST FOR 24 HOURS from 14/08/24 at 0600 UTC to 15/08/24 at 0600UTC :
WAM (30S/40S,50E/65E) :
Rain, showers and thundery squalls with CG
WIND: Northerly to North-westerly 5/6, increasing soon North-westerly
7/8 with strong gusts with CG from southwest area, but Westerly to
North-westerly 4/6 over east at first.
SEA : rough to very rough in the north, very rough to high in south. SW
swell 4/7m decreasing then later W to NW swell 2/4m in west with
CG.
VIS : v
