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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 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 211000 TO 221000 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 from mid-period.
2. MARION FORTIES EAST: W to NW 35 to 40 in the central parts at first
and in the south during the second half of the
period.
SYNOPTIC CHART 06:00Z
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High 1028 hPa 33s20e
Low 1016 hPa 35s10w
Cold Front 1: 20s15w 25s10w 30s05w into 35s10w.
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, spreading to
the south-central from mid-period where it will reach 35 to
40.
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: 3.0 to 4.0m, 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 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 central parts at
first and in the south during the second half of the period
but 05 to 15 in the north-east.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.0 to 3.5m in the extreme east at first, otherwise 4.0 to
5.0m reaching 5.5 to 6.5m in the south-west, spreading to the
south-east towards the end of the 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 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 SYNOPSYS, 24/07/21 at 0000 UTC:
– Waving front over WAM and CRO moving Eastward slowly.
– Building high 1023 hPa near 42S/68E, moving North-Eastward.
PART 3: FORECAST FOR 24 HOURS from 21/07/24 at 0600 UTC to 22/07/24 at 0600UTC:
WAM (30S/40S,50E/65E): Frontal rain and showers, squalls.
WIND : Northerly 5/6 ahead front and backing later Westerly 4/5 behind,
locally clockwise 4/5 with waving and southerly 4 over southern
part. Gusts on squalls.
SEA : Moderate to rough. Arrival by southwestern of a SW swell, 2 to 3
m.
VISI : Poor in precipitation.
AMS (30S/40S,65E/80E) : Showers.
WIND : Anticlockwise 3 to 5 setting up northerly 5/6 over western part
later ahead front.
SEA : Moderate to rough. S swell 2 to 3 m decreasing.
VISI : moderate in precipitation.
CRO (40S/50S,50E/65E) : Rain and frontal showers. Squalls.
WIND : Northerly 5/6 ahead front and backing westerly 5/6 behind,
increasing 6/7 over southern part later.
SEA : moderate to rough becoming rough to very rough. Arrival of a W
swell, 2 to 4 m from east to west area.
VISI : poor in precipitation.
KER (40S/50S,65E/80E) : Frontal rain and showers, squalls by west
area.
WIND : Anticlockwise 3 to 5 but increasing SW 6/7 over south-eastern
part at first, setting up northerly 6/7 ahead front and backing
westerly 5 behind over southwestern part at end. Gusts on
squalls.
SEA : Rough. S swell, 2 to 3 m. W swell 2 m over western part at end.
VISI : Poor in precipitation.
ENDS THIS IS CAPE TOWN RADIO
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