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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 30th OF JULY 2024 AT 17:30 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 302200 TO 312200 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 : W to SW 35 to 45 reaching 50 in places.
SYNOPTIC CHART 12:00Z
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Low 50s35e 980 hPa
Low 45s36e 986 hPa
High 34s03e 1032 hPa
Cold Front: 33s32e, 35s36e, 40s42e, 45s44e into 50s35e (980 hPa).
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW 20 to 30 in the east at first, otherwise W to SW 25 to
35 reaching 45 in places in the south.
VIS : Moderate in showers and rain.
SEA STATE: 3.5 to 4.5m SW swell reaching 5.5 to 6.5m in the central parts
spreading eastward, but 7.5 to 8.5m reaching 9.0m in places in
the south.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the north, otherwise W to SW 15 to 25.
VIS : Good, but moderate in showers and rain in the south-west
spreading eastward.
SEA STATE: 3.0 to 4.0m SW swell reaching 5.0m in places in the extreme
south.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m SW swell in the extreme south.
MADAGASCAR EAST:
WIND : SE 10 to 20 in the north, otherwise variable 05 to 10.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25 in the south-east, otherwise W to SW 25 to 35
reaching 45 to 50 in places.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.5 to 4.5m W to NW swell reaching 5.5 to 6.5m, but 7.0 to
8.0m in the north-west spreading south-eastward.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/30 AT 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE STRONGER THAN AVERAGES GIVEN HERE).
PART 1: WARNING :
-GALE FORCE 8 OVER WAM AND CRO.
PART 2: GENERAL SYNOPSYS, 24/07/30 AT 1200 UTC :
– HIGH 1022 HPA NEAR 31S/78E WITH RIDGE TO THE SOUTHWEST, MOVING5E/80E) :
RAIN AND FRONTAL SHOWERS, THUNDERY SQUALLS AT TIMES. GUSTS OF WIND.
CF.
WIND : NORTHERLY 5/6 AHEAD OF CF, LOCALLY 7 IN THE SOUTH, BACKING BEHIND
WESTERLY 4/5 IN THE NORTH AND 6/7 IN THE SOUTH. BUT ANTICLOCKWISE 2/4
OVER EAST ZONE AT THE BEGINNING.
SEA : ROUGH BECOMING VERY ROUGH OVER SOUTHWEST LATER. SOUTH SWELL 2/4M,
THEN ARRIVAL OF A SOUTHWESTERLY SWELL 3/5M TO THE WEST LATER.
VIS : POOR UNDER PRECIPITATION.
CRO (40S/50S,50E/65E) :
RAIN AND FRONTAL SHOWERS, THUNDERY SQUALLS AT TIMES. CF THEN CG.
GUSTS.
WIND : WEST HALF : NORTHERLY 5/6, INCREASING NW 6/7 WITH CG, BACKING
WESTERLY 6/7, LOCALLY 8 IN THE SOUTH BEHIND.
EAST HALF: CLOCKWISE 3/5 OVER THE NORTH-EAST QUARTER, TEMPORARILY
VARIABLE 2/4 OVER THE SOUTH-EAST QUARTER, BECOMING NW THEN W 6/7
LATER WITH CG, BUT NORTHERLY 6/7 OVER THE EAST ZONE AT FIRST WITH
CF.
SEA : ROUGH, BECOMING VERY ROUGH OVER NW HALF. WESTERLY SWELL
2/4M, INCREASING 4/6M IN THE WEST AT THE END.
VIS : POOR UNDER PRECIPITATION.
KER (40S/50S,65E/80E) :
RAIN, SQUALLS AND FRONTAL SHOWERS UNDER CF.
WIND : NORTHERLY TO NORTHWESTERLY 4/5, INCREASING 5/6 DURING THE DAY,
REACHING 7 IN THE NORTHWEST AT THE END.
SEA : ROUGH, LOCALLY MODERATE IN THE SOUTH AT FIRST. W TO NW SWELL
2/4M BUT SOUTHERLY SWELL 2/4M IN EAST AT START.
VIS : POOR UNDER PRECIPITATION.
ENDS DE CAPE TOWN RADIO/ZSC+
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