IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 20TH OF OCTOBER 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 201000 TO 211000 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. MARION FORTIES EAST: NW to W 35 in the south during the first half of
the period.
SYNOPTIC CHART 06:00Z
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High 1032 hPa 36s05e, High 1026 hPa 37s37e, High 1031 hPa 33s80e
Low 970 hPa 57s35e, Low 969 hPa 62s32e, Low 1002 hPa 47s60e
1. Cold Front: 41s30e 45s38e 55s47e into 62s32e 2. Cold Front: 34s50e 40s55e into 47s60e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 10 to 20 in the south and east, otherwise SE to E 15
to 25 reaching 30 in the north-west towards end of period but
variable 05 to 10 over the central parts.
VIS : Moderate to poor in showers and rain in places, except over
the central parts but in the north-east by end of period.
SEA STATE: 3.0 to 4.0m in the south-east at first, and south-west,
spreading over the central parts towards end of period, with
SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south-east, otherwise E to SE 15 to
25 reaching 30 in the north and south-west but NE to E 10
to 20 in the west.
VIS : Good, but moderate to poor in showers and thundershowers in
the north and west.
SEA STATE: 3.0 to 4.0m in the north and south-west, with SE swell.
MOZAMBIQUE CHANNEL:
WIND : NE to E 10 to 20 over the western half, otherwise SE 10 to 20
but S to SW 05 to 15 in the east.
VIS : Good, but moderate in showers in the north.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : NE 15 to 25 in the south-west, otherwise SE to E 10 to 20
reaching 25 in the north-west.
VIS : Moderate to poor in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : S to SW 15 to 25 in the north, otherwise NW to W 15 to 25
reaching 30 to 35 in the south during the first half of the
period.
VIS : Good but moderate to poor in showers and rain in the south-
east and north-west, drifting to the north-east towards end of
period.
SEA STATE: 3.0 to 4.0m in the southern and western half, reaching 5.0 to
6.0m in the south-west, spreading to the south-east towards
end of period with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
24/10/20 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
NIL
PART 2: GENERAL SYNOPSIS, 24/10/20 AT 0000UTC
– DEEPENING LOW 1004 NEAR 47S/55E, MOVING SOUTH-EASTWARD. WARM FRONT
45S/68E, 47S/60E, 47S/56E. COLD FRONT FROID 47S/56E, 44S/53E, 40S/50E.
– HIGH PRESSURE OVER WAM AND AMS.
PART 3: FORECAST FOR 24 HOURS FROM 24/10/20 AT 0600UTC TO 24/10/21 AT 0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED RAIN.
WIND: NW 3/5 BACKING SW 3/5.
SEA : SLIGHT TO MODERATE, LOCALLY ROUGH OVER FAR SOUTH BY SW SWELL 2 TO
3M.
VIS : POOR IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN.
WIND: NW 4/6 LOCALLY 7 OVER FAR SOUTHERN.
SEA : MODERATE, LOCALLY ROUGH OVER FAR SOUTH.
VIS : POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
RAIN, SHOWERS AND SQUALLS.
WIND: NW 4/6 BACKING SW 4/6, INCREASING W 6/7 OVER SOUTHERN LATER.
SEA : MODERATE TO ROUGH, BECOMING VERY ROUGH OVER SOUTH-WESTERN AT END.
SW SWELL 2 TO 3 M.
VIS : POOR TO VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
RAIN, SHOWERS AND SQUALLS.
WIND: N TO NW 4/6 INCREASING WESTERLY 6/7 LATER.
SEA : MODERATE TO ROUGH LOCALLY VERY ROUGH OVER SOUTH-EASTERN. SW SWELL 2
TO 4 M, LOCALLY 4 TO 5 M OVER FAR SOUTH-EASTERN AT FIRST, ABATING
LATER.
VIS : POOR TO VERY POOR IN PRECIPITATIONS.
ENDS DE CAPE TOWN RADIO/ZSC+
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