SECURITE
IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 11th OF AUGUST 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 111000 TO 121000 UTC:
WIND IN KNOTS, WA by the end of the period.
2. MARION FORTIES EAST: NW 35 to 45 in the first half of the period
as well as in the north and central by the second
half of the period, spreading to the east towards
the end of the period.
SYNOPTIC CHART 06:00Z
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High 30s09e 1024 hPa
Low 55s22e 973 hPa
Low 46s26e 978 hPa
Cold Front 1: 38s22e 42s22e into 43s20e.
Cold Front 2: 38s40e 43s46e 48s51e into 48s45e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 15 to 25 in the east reaching 30 to 35 in the east by
the second half of the period, otherwise SW to W 15 to 25
reaching 35 to 45 west spreading to the central by the end of
the period.
VIS : Good in the east in the first half of the period, otherwise
moderate to poor in showers and rain.
SEA STATE: 4.0 to 5.5m reaching 6.0 to 7.0m in the south-west spreading
central towards the end of period, SW to W swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SW 15 to 25 in the west, otherwise N to NW 15 to 25.
VIS : Good in the central, otherwise moderate in showers.
SEA STATE: 3.0 to 4.0m in the extreme south and central, SW swell.
MOZAMBIQUE CHANNEL:
WIND : SW to S 10 in the south-east at first, otherwise NE to E 15 to
25, but SE 10 to 20 in the north in the first half of the
period.
VIS : Good.
SEA STATE: 2.5 to 3.5m in the extreme south, SW swell.
MADAGASCAR EAST:
WIND : SE 15 to 25 in the north, otherwise E to NE 15 to 25.
VIS : Moderate in showers in places.
SEA STATE: 2.5 to 3.5m in the extreme south, SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW 20 to 30 reaching 35 to 45 in the first half of the period
as well as in the north and central by the second half of the
period, spreading to the east towards the end of the period.
VIS : Good but moderate to poor in showers places.
SEA STATE: 4.0 to 6.0m reaching 7.0 to 9.0m in the east and central in
the first half of the period, NW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/11 at 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here.).
PART 1: WARNING :
Gale force 8 expected over CRO and KER.
Strong Gale force 9 expected over far southern CRO.
PART 2: GENERAL SYNOPSYS, 24/08/11 at 0000 UTC :
High 1028 near 29S/65E quasi stationary
Warm front WF axis 41S/76E 46S/73E 50S/68E and cold front CF axis 33S/51E 38S/70E 72S/72E 50S/68E moving quicky eastward.
Warm front WG axis 45S/62E 50S/40E and cold front CG axis 36S/29E 40S/38E 46S/45E moving quickly east-south-eastward.
Convergence line expected over far southwestern WAM later.
PART 3: FORECAST FOR 24 HOURS from 11/08/24 at 0600 UTC to 12/08/24 at 0600UTC :
WAM (30S/40S,50E/65E) :
Frontal showers with CF at start. Showers and thundery squalls over southwestern with the convergence line later
WIND: NW 5/6, locally 7 over far southwestern at start but anticlockwise
3/4 over far north-eastern.
SEA: Moderate or rough, becoming very rough and crossed later over
south-western. Long SW swell 4/5 m over southwestern at end.
VIS: Poor with precipitations.
AMS (30S/40S,65E/80E) :
Frontal showers with CF at start, becoming scattered.
WIND:NW 5/6 over southern, locally 7 over far south-eastern at start.
Anticlockwise 3/4 over northern.
SEA: Rough but very rough at start over far south-eastern, becoming
moderate over far northern. SW swell 3/4m abating.
VIS: Poor with precipitations.
CRO (40S/50S,50E/65E) :
Frontal rain and showers with WG and CG.WIND: Westerly 6/7, increasing 8 over southern, locally 9 over far southern.
SEA: Rough or very rough, crossed, becoming high by western soon. W swell
increasing 5/7m by western soon.
VIS: Poor in precipitations.
KER (40S/50S,65E/80E) :
Frontal rain and showers with WF and CF at start then with WG and CG later.
WIND: Westerly 6/7 increasing 8 over far western at end but Northerly 6/7
ahead of WF and WG in the south.
SEA: Rough or very rough, crossed, SW swell 3/4 m.
VIS: Poor in precipitations.
ENDS THIS IS CAPETOWNRADIO
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