IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 31st OF JULY 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 312200 TO 012200 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: NW 35 to 40 in the north-east, otherwise W to SW 35
reaching 40 to 50 in places in the south-eastern parts.
2. DURBAN EAST: NW 35 in the south-east at first, otherwise W to SW 35 to
40 in the south-east second half of the period.
3. MARION FORTIES EAST: W to SW 35 to 45 in the north and east, but 50 to
60 in the north-east at first, becoming N to NW
35 in the extreme west at the end of the period.
SYNOPTIC CHART 12:00Z
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Low 980 hPa 52s10w
Low 980 hPa 53s05w
Low 980 hPa 47s39e
Cold front: 30s19w 35s09w 40s04w 45s00w into 53s03w Cold Front: 35s35e 40s41e 45s42e into 47s39e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW 30 to 40 in the north-east, otherwise W to SW 25 to 35
reaching 45 to 50 in places in the south-eastern parts. It
will be NW 10 to 20 in the north-west second half of the
period.
VIS : Moderate to poor in showers and rain, clearing from the west.
SEA STATE: 3.5 to 4.5m SW swell reaching 5.5 to 6.5m in the central parts
spreading eastward, but 7.5 to 8.5m reaching 9.0m in places in
the south-east.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NW 20 to 30 in the east and reaching 35 in the south-east at
first, otherwise W to SW 20 to 30 reaching 35 to 40 in the
south-east second half 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.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, but SW 10 to 20 in the west at times.
VIS : Good but moderate in the north.
SEA STATE: 3.0m SW swell in the extreme south.
MADAGASCAR EAST:
WIND : SE 10 to 20 in the north, otherwise variable 05 to 10.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 20 to 30 reaching 35 to 45 in the north and east, but
50 to 60 in the north-east at first, becoming N to NW 20 to 30
in the west second half of the period reaching 35 in the
extreme west at 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
north-east, W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/31 at 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here).
PART 1: WARNING:
– Locally storm over far southern WAM and over far northern CRO in the
daytime.
– Strong gale over WAM and CRO.
– Locally gale over western AMS and KER at end.
PART 2: GENERAL SYNOPSYS, 24/07/31 at 1200 UTC:
– Cold front CF axis 30S/66E,
