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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 07th 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 071000 TO 081000 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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NIL.
SYNOPTIC CHART 06:00Z
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Low 46s13e 992 hPa
Low 43s13w 994 hPa
Low 25s13e 1014 hPa
High 30s37e 1024 hPa
Cold Front 1: 29s15w, 35s01w, 40007es into 46s13e (992 hPa).
Cold Front 2: 35s21w, 40s12w into 43s13w (994 hPa).
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : SW 10 to 20 in the east until midnight, otherwise N to NW 10
to 20 reaching 30 in the extreme west.
VIS : Good but moderate in showers and rain in the extreme west from
midnight.
SEA STATE: 3.0 to 4.0m SW swell reaching 5.0m in the south, subsiding
from midnight.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anticyclonic 05 to 10 over the central parts spreading
eastward and reaching 20 to 30 in the extreme west.
VIS : Good.
SEA STATE: 3.0 to 3.5m SW swell, except in the north-west.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m SW swell in the extreme south.
MADAGASCAR EAST:
WIND : E to SE 05 to 15 reaching 20 to 25 in the north.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 10 to 20 reaching 30 in the south. It will become SW
20 to 30 in the extreme south-west at the end of the period.
VIS : Good until evening, otherwise moderate in showers and rain in
the west spreading eastward.
SEA STATE: 4.0 to 5.0m W to NW swell reaching 6.0m in the extreme south
at first.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/07 at 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here.).
PART 1: WARNING :
– Strong gale force 9 over WAM, AMS, CRO and KER.
– Storm force 10 over North of KER and South of AMS.
PART 2: GENERAL SYNOPSYS, 24/08/07 at 0000 UTC :
– Low 980 hPa near 47S/83E with cold front (CF) axis 30S/68E, 33S/73E,
41S/83E moving rapidly Eastward.
– Low 975 hPa near 49S/64E, with cold front (CG) axis 41S/67E, 45S/68E,
48S/66E moving Eastward 20kt.
– Low 975 hPa near 43S/57E, with cold front (CH), axis 40S/49E, 40S/52E,
42S/56E moving Eastward 25kt.
PART 3: FORECAST FOR 24 HOURS from 07/08/24 at 0600 UTC to 08/08/24 at 0600UTC :
WAM (30S/40S,50E/65E) :
Rain, frontal showers and squalls over South-Eastern under CH at beginning then scattered showers.
WIND: SW 7/8, locally 9 with strong gusts over South-Western area at
beginning decreasing SW 4 to 6 by North-Western area.
SEA : Rough to very rough locally high. SW swell 4 to 6 m.
VISI: Very poor under precipitatio
