IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 18th OF JULY 2024 AT 17:30 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 182200 TO 192200 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 to W 35 to 40 in the south-west spreading east and
north.
2. MARION FORTIES EAST : N to NE 35 in the south-west first half of the
period
SYNOPTIC CHART 12:00Z
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Low 992 hPa 44s05e
Low 968 hPa 53s21e
Low 1012 hPa 30s31e
Cold Front: 34s07w 40s08e into 44s05e
Cold Front: 33s18e 35s20e 40s25e 45s28e 50s29e into 53s21e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : SW 10 to 15 in the extreme east, otherwise but N to NW 10 to
20 but SW 15 to 25 in the west. It will become NW to W 20 to
30 in the extreme west mid-period, reaching 35 to 40 in the
south-west spreading east and north.
VIS : Moderate in showers and rain in places in the west spreading
east, otherwise good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the west but 6.0
to 8.0 in the extreme east, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 10 in the east, otherwise N to NW 15 to 25 but
SW 10 to 20 in the extreme west spreading east. It will become
Variable 10 in the south-west towards the end of the period
VIS : Moderate in showers and rain the south-west spreading south-east.
SEA STATE: 3.0m in the extreme south-east at first, SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NE 05 to 15 in the south-west, otherwise E to SE 10
to 20 reaching 25 in the extreme north-east.
VIS : Good but moderate in showers in the extreme north at times.
MADAGASCAR EAST:
WIND : S to SE 20 to 30, but Variable 05 to 10 in the central parts.
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 : SW 15 to 25 in the east, otherwise variable 05 to 10 but
N to NE 10 to 20 in the west 25 to 35 in the south-west first
half of the period, becoming NW 15 to 25 in the extreme west
mid-period. It will become S to SW 15 to 25 in the extreme
west towards end of the period.
VIS : Good becoming moderate in showers and thundershowers in the
west from mid-period, spreading east.
SEA STATE: 3.0 to 4.0m in the east, Mainly SE swell and SW swell in the
south-west towards the end of the first half of the period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/18 at 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here).
PART 1: WARNING :
Nil.
PART 2: GENERAL SYNOPSYS, 24/07/18 at 1200 UTC :
Cold front CF over AMS.
Low 999 hPa near 45S/59E then over KER, filling.
PART 3: FORECAST FOR 24 HOURS from 18/07/24 at 1800 UTC to 19/07/24 at 1800 UTC :
WAM (30S/40S,50E/65E) :
Showers.
WIND : W 5/6 then SW, decreasing temporarily westerly 4 over western part
at end ahead new front later.
SEA: Rough. Westerly swell 2,5 to 3,5 m.
VIS: Poor in precipitations.
AMS (30S/40S,65E/80E) :
Frontal rains and showers, squalls.
WIND : Increasing NW 6/7 ahead CF backing westerly 5/6 behind. Gusts on
squalls.
SEA : Moderate to rough. NW swell 2 to 3 m.
VIS : Poor in precipitations.
CRO (40S/50S,50E/65E) :
Showers.
WIND : Clockwise 5 to 7 then setting up southerly 5, decreasing over
western part, temporarily variable 3/4 ahead new front later.
Easterly 4 over southern part.
SEA : Rough. Westerly swell 3 to 4 m.
VIS: Poor in precipitations.
KER (40S/50S,65E/80E) :
Frontal rains and showers, squa
