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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 21st 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 212200 TO 222200 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: W to SW 35 to 40 in the south-central towards mid-period.
2. MARION FORTIES EAST: W to NW 35 to 40 in the south.
SYNOPTIC CHART 12:00Z
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High 1026 hPa 33s20e
Low 1006 hPa 39s07w
Cold Front 1: 20s18w 25s12w 30s05w into 39s07w.
Cold front 2: 26s25w 31s20w 36s15w 41s10w 46s11w into 55s20w
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25, reaching 30 in the south-west at first,
but 35 to 40 in the south-central towards mid-period.
VIS : Moderate in showers and rain.
SEA STATE: 3.5 to 4.5m, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 05 to 15.
VIS : Good, but moderate in showers and rain in places.
SEA STATE: 3.0m in the south, SW swell.
MOZAMBIQUE CHANNEL:
WIND : Anti-cyclonic 05 to 15 in the south, otherwise SE to E 10 to
20.
VIS : Good but moderate in showers in places in the extreme south
and north.
MADAGASCAR EAST:
WIND : Anti-cyclonic 05 to 10 in the south, otherwise S to SE 10 to
20.
VIS : Good, but moderate in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 20 to 30 reaching 35 to 40 in the south but 05 to 15
in the north-east at first.
VIS : Moderate to poor in showers and rain.
SEA STATE: 4.0 to 5.0m reaching 6.0 to 7.0m in the south-west, spreading
to the south-east from mid-period, 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: 24/07/21 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, 24/07/21 at 1200 UTC :
Waving front CF axis 40E/49S, 45S/57E 49S/61E moving eastward.
High 1025 hPa near 38S/74E, expected 1033 near 35S/86E at the end.
Minimum filling over North WAM with associated squalls.
CG front over western CRO at the end.
PART 3: FORECAST FOR 24 HOURS from 21/07/24 at 1800 UTC to 22/07/24 at 1800 UTC :
WAM (30S/40S,50E/65E) :
Rain and frontal showers, squalls.
WIND :North half: setting-up Westerly 4/5 by west, but clockwise 4/6 over
east zone in first part of validity.
South half: NW 3/5 ahead of CF front, backing Westerly 3/5
behind.
SEA: Moderate to rough, becoming rough. SW swell 2/4m behind the
front.
VIS: Poor with precipitation.
AMS (30S/40S,65E/80E) :
Rain and frontal showers, squalls. CF
WIND: Anticlockwise 3 to 5, setting up Northerly 4/6 by west zone with
front CF.
SEA: Modera
