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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 20th 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 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 central and west.
SYNOPTIC CHART 06:00Z
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High 1028 hPa 33s15e
Low 1010 hPa 38s34e
Low 1006 hPa 32s10w
Cold Front 1: 43s42e 46s41e into 55s37e into 57s31e.
Cold Front 2: 40s26w 46s21w 55s26w into 56s31w.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW 15 to 25 in the extreme north-east in the first half of the
period, otherwise W to SW 15 to 25, reaching 30 in the north-
west in the first half of the period.
VIS : Moderate in showers and rain in places, becoming good in the
extreme north-west towards the end of the period.
SEA STATE: Nil in the east, otherwise 3.5 to 4.5m reaching 5.5 to 6.0 in
the west and central in the first half of the period, SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NW 10 to 20 in the east, otherwise anti-cyclonic 10 to 20.
VIS : Good but moderate in showers and rain in places at times.
SEA STATE: 3.0 to 4.0m in the south-west spreading to the south-central
by the end of the period, SW swell.
MOZAMBIQUE CHANNEL:
WIND : Anti-cyclonic 10 to 20 in the south, otherwise SE to E 10 to
20, but 25 in the extreme north-east.
VIS : Good but moderate in showers in the extreme south.
MADAGASCAR EAST:
WIND : N to NE 10 to 20 in the south, otherwise S to SE 15 to 25 but
variable 05 to 10 in the extreme south-west.
VIS : Moderate in showers in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW to W 15 to 25 reaching 35 in the central and west but anti-
cyclonic 05 to 15 in the central in the first half of the
period.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.5 to 4.5m but 5.5 to 6.5m in the west, SW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/20 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 SYNOPSYS, 24/07/20 at 0000 UTC :
Cold front leaving AMS area by north-eastern in the daytime.
Waving front reaching South-Western WAM and Western CRO and moving Eastward slowly.
Cold front along 35E between 35S and 52S, moving Eastward 25/30 kt.
High 1022 hPa near 50S/62E, moving north-eastward, expected 1025 hPa over Southern AMS near 40S/70E at end.
PART 3: FORECAST FOR 24 HOURS from 20/07/24 at 0600 UTC to 21/07/24 at 0600UTC :
WAM (30S/40S,50E/65E) :
Frontal showers with thundery squalls by Western.
WIND: Anticlockwise 2/4 increasing N 4 to 6 ahead the front by western
soon and backing W 3/4 behind. Gust with squalls.
SEA: Moderate to rough. SW swell 2 to 3 m abating.
VIS: Poor in precipitation.
AMS (30S/40S,65E/80E) :
Frontal rain and showers moving Eastward.
WIND: NW 5/6 over far north-eastern ahead of the front backing Westerly 4
to 5 behind and increasing Southerly 4 to 6 over southern. Becoming
anticlockwise 2*/4 by Western later.
SEA: Moderate to rough. Westerly swell 2 to 3 m over northern and S
swell 2 to 3 m over southern.
VIS: Poor in precipitation.
CRO (40S/50S,50E/65E) :
Rain and frontal showers with the fronts by western.
WIND: Anticlockwise 2 to 4 increasing Northerly 4 to 6 by western at
first and backing W 2 to 4 behind at end.
SEA: Moderate to rough. Slight W swell.
VIS: Poor in precipitation.
KER (40S/50S,65E/80E) :
Few showers.
WIND: Clockwise 4 to 6 over northern, setting up soon Southerly 4 to 6
and decreasing anticlockwise 2 to 4 over western soon and N 4/6
over western at end.
SEA : Moderate to rough, locally very rough over the far south-eastern. S
swell 2 to 3 m.
VIS : Mainly good.
ENDS THIS IS CAPE TOWN RADIO
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