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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 14TH OF SEPTEMBER 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 141000 TO 151000 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: SW 35 in the south.
2. MARION FORTIES EAST: SE to E 35 in the north-west at first.
SYNOPTIC CHART 06:00Z
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High 1029 hPa 29s10w
High 1033 hPa 34s55e
Low 976 hPa 53s05e
Low 1006 hPa 39s36e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 20 to 30 over the eastern half, otherwise SW 15 to 25
reaching 30 to 35 in the south but variable 05 to 10 in the
south-west, where it will become W to NW 20 to 30 by mid-
period.
VIS : Moderate to poor in showers and rain, except over the central
parts.
SEA STATE: 3.5 to 4.5m in the south, spreading to the south-east by mid-
period, while moderating from the west, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SW 10 to 20 in the west but in the south-west at first,
otherwise E to NE 15 to 25 reaching 30 in the north, becoming
variable 05 to 10 over the central parts by mid-period.
VIS : Good, but moderate in showers and rain in the south and west.
SEA STATE: 3.0m with SW swell, but 3.5m in the north with E to NE swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 over the central parts, otherwise SE 10 to
20 reaching 25 in the north-east but N to NE 05 to 15 in the
south during the first half of the period.
VIS : Good but moderate in ss, except in the south-
west.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SE to E 25 to 35 in the north-west at first, otherwise W to SW
10 to 20 but N to NE 15 to 25 in the north. It will become NW
15 to 25 in the south-west by mid-period.
VIS : Moderate to poor in showers and rain in places.
SEA STATE: 3.0m with W to SW swell, but 3.5 to 4.5m in the north at
first, with N to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
24/09/14 AT 0400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
GALE FORCE 8 OVER SOUTH-EAST AMS.
PART 2: GENERAL SYNOPSIS, 24/09/14 AT 0000UTC
HIGH 1030 HPA NEAR 36S/53E MOVING EAST-NORTH-EASTWARD 20/25 KT.
WEST RAPID FLOW OVER SOUTH 40S.
PART 3: FORECAST FOR 24 HOURS FROM 24/09/14 AT 0600UTC TO 24/09/15 AT 0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS. RAINS AND SHOWERS OVER SOUTHWESTERN AT END.
WIND: ANTICLOCKWISE 3 TO 5, INCREASING N 6/7 AT END OVER WESTERN.
SEA : ROUGH TO VERY ROUGH. SW SWELL 3/4 M DECREASING.
VIS : MODERATE IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
SHOWERS BECOMING SCATTERED.
WIND: W TO SW 6/7 OVER SOUTHEASTERN AT FIRST, BECOMING ANTICLOCKWISE
3 TO 5 BY WEST AREA, SOUTHERLY MAINLY.
SE A: ROUGH TO VERY ROUGH. SOUTH-WEST SWELL 3/4 M.
VIS : MAINLY GOOD.
CRO (40S/50S, 50E/65E)
SHOWERS OVER SOUTHERN AND NORTHWESTERN LATER.
WIND: WESTERLY 5 TO 7 FROM NORTH TO SOUTH, DECREASING AND LOCALLY
ANTICLOCKWISE 3 TO 5 LATER, SETTING UP NORTHERLY 5/6 OVER WESTERN
AT END.
SEA : ROUGH TO VERY ROUGH. SOUTHWESTERLY SWELL 4 M.
VIS : POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
SHOWERS LATER.
WIND: SOUTHERLY 6/7 OVER SORTHEASTERN AT FIRST, WESTERLY 5 TO 7 FROM
NORTH TO SOUTH. SOUTHERLY 5/6 OVER WESTERN AT END.
SEA: ROUGH TO VERY ROUGH. SOUTHWESTERLY SWELL 4 M.
VIS: POOR IN PRECIPITATIONS.
ENDS DE CAPE TOWN RADIO/ZSC+
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