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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 08th OF JULY 2024 AT 17:00 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 082200 TO 092200 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 NW 35 to 40 reaching 45.
2. DURBAN EAST: NW to W 35 in the south at first.
3. MARION FORTIES EAST: N to NE 35 to 40 in the extreme east during the
first half of the period reaching, otherwise NW 35 to 40 in the north-
west.
SYNOPTIC CHART 12:00Z
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High 1026 hPa 25s05w.
Low 984 hPa 43s30e
Cold Front: 25s38e 35s40e 40s35e into 43s30e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 30 to 40 reaching 45.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m in the east, otherwise 5.0 to 6.0m reaching 7.0 to
8.0m but 9.0 to 10.0m in the west and over the central,
W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : W to NW 15 to 25 reaching 30 to 35 in the south at first. It
will become anti-cyclonic 05 to 15 in the north from mid-
period.
VIS : Moderate in showers and thundershowers in places.
SEA STATE: 3.0 to 4.0m in the west, reaching 5.0 to 6.0m in the south-
west but 7.0 to 7.5m in the south-west, SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, but N to NW 15 to 25 in the south during the
first half of the period.
VIS : Good.
MADAGASCAR EAST:
WIND : S to SE 10 to 20 in the north reaching 25 in the extreme
north-east, otherwise NE 05 to 10.
VIS : Good.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NE 20 to 30 in the east during the first half of the
period reaching 35 to 40 in the extreme east, otherwise NW 15
to 25 reaching 30 to 40 in the north-west.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m but 7.0 to 8.0m in the
north-west from mid-period, N to NE swell but NW in the
north-west.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/08 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 WEST CRO.
PART 2: GENERAL SYNOPSYS, 24/07/08 AT 1200 UTC :
– COLD FRONT OVER WEST CRO IN THE MORNING, MOVING EASTWARD QUICKLY.
– LOW 1010 HPA NEAR 30S/62E, WITH COLD FRONT ASSOCIATED, MOVING NORTH-EASTWARD.
– HIGH 1032 HPA NEAR 46S/62E, FORECAST 1032 HPA NEAR 39S/71E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 08/07/24 AT 1800 UTC TO 09/07/24 AT 1800 UTC :
WAM (30S/40S,50E/65E) :
RAIN, SHOWERS AND SQUALLS OVER NORTHERN AT BEGINNING. FRONTAL SHOWERS OVER WESTERN DURING THE DAY.
WIND : CLOCKWISE 4 TO 6 LOCALLY 7 WITH GUSTS OVER NORTHERN AT BEGINNING, EAST TO NORTH-EAST 4 TO 6 OVER SOUTHERN AREA, THEN INCREASING 6 TO 7 BY SOUTH-WESTERN IN THE MORNING. NORTHERLY 5 TO 6, LOCALLY 7 OVER SOUTHERN AT END.
SEA: ROUGH TO VERY ROUGH. SOUTH-EAST SWELL 2 TO 4 M, THEN ARRIVAL OF A WEST SWELL 3 M BY WESTERN PART AT END.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
AMS (30S/40S,65E/80E) :
SHOWERS OR SQUALLS OVER FAR NORTH-WESTERN PART AT BEGINNING.
WIND : SOUTHERLY TO SOUTH-EAST 4 TO 6 WITH GUSTS OVER NORTH-
