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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 17th OF JULY 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 171000 TO 181000 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 30 to 35 in the south west second half of the period.
SYNOPTIC CHART 06:00Z
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Low 996 hPa 43s05e
Low 972 hPa 55s17w
Low 990 hPa 47s45e
Low 956 hPa 65s10e
Cold Front: 33s05w 35s02e 40s05e into 43s05e Cold Front: 33s12e 35s17w 40s21e 45s24 into 55s17e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : SW 15 to 25 over the central and south eastern parts,
otherwise N to NW 15 to 25 reaching 30 to 35 in the south west
second half of the period.
VIS : Moderate in showers and rain in places but good in the north.
SEA STATE: 3.0 to 4.0m, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE 10 to 15in the north west, otherwise W to NW 10 to
20, but anti-cyclone over the central parts. It will be SW 10
to 20 in the south.
VIS : Moderate in showers and rain in the east.
SEA STATE: 3.0m in the extreme south-east, SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the extreme south, otherwise E to SE 10
to 20 but NE 10 to 15 in the south west.
VIS : Good.
MADAGASCAR EAST:
WIND : S to SE 20 to 30, but N to NE 10 to 20 in the central parts,
but NW 10 to 15 in the extreme south.
VIS : Moderate in showers in places.
SEA STATE: 3.0m in the extreme north, E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : S to SE 15 to 25 in the south east, otherwise SW 15 to 25 but
N to NW 10 to 20 in the west, it will become NE 5 to 25 in the
extreme west second half of the period.
VIS : Moderate to poor in showers and rain at first, but good in the
west.
SEA STATE: 3.0 to 4.0m in the north east, NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/17 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, CRO and KER.
PART 2: GENERAL SYNOPSYS, 24/07/17 at 0000 UTC :
– Low 989 near 44S/46E, expected 997 near 47S/57E at end.
– Associated cold front (CF) axis 30S/54E, 40S/62E, 47S/61E, 50S/54E and
warm front (WF) axis 47S/69E, 50S/62E, 51S/52E moving eastward with le
low.
– High 1035 near 36S/73E, expected 1035 near 33S/83E at end.
PART 3: FORECAST FOR 24 HOURS from 17/07/24 at 0600 UTC to 18/07/24 at 0600UTC :
WAM (30S/40S,50E/65E) :Frontal rains and showers with CF. Showers, locally thundery squalls behind.
WIND: Northerly 6 to 8 from north to south ahead of CF, strong gusts.
Becoming NW 4 to 6 behind, temporary 7 over far southern at first.
SEA : Rough to very rough. Westerly swell 3 to 4 m and Northerly swell 3
to 4 m over far eastern.
VIS : Poor to very poor in precipitations.
AMS (30S/40S,65E/80E) :Frontal rains and showers with CF over southwestern soon.
WIND: Anticlockwise 3 to 5 over northeastern, increasing North to
Northwest 6/7 ahead of CF. Gusts.
SEA : Moderate to rough, locally very rough over Southern area. Southerly
swell 2 to 3m abating by western.
VIS : Poor with precipitation.
CRO (40S/50S,50E/65E) : Frontal rains and showers with CF leaving the area by eastern soon. Showers, locally thundery squalls behind.
WIND: Northerly 7/8 over far eastern at start. Strong Gusts. Becoming
clockwise 3/5 over southeastern and 6/7 over northwestern.
SEA : Rough to very rough. Northerly swell 3/4 m then Westerly swell 3/4m
propagating southeastward.
VIS : Poor to very poor in precipitations.
KER (40S/50S,65E/80E) :Frontal rains and showers with WF and CF. showers and squalls behind.
WIND: South-West 3/5 over Eastern, Increasing Northerly 7/8 ahead of CF
then decreasing Westerly 5/6 behind.
SEA : Rough to very rough. South-Westerly swell 3/5 m abating, then
North-West swell 3/4 m by Western part at end.
VIS : Poor under precipitations.
ENDS THIS IS CAPE TOWN RADIO
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