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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 16TH OF SEPTEMBER 2024 AT
17:45 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 162200 TO 172200 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:Nil.
SYNOPTIC CHART 12:00Z
High 1030 hPa 32s00e
Low 1015 hPa 41s12w
Low 991 hPa 53s42e
Low 1014 hPa 37s49e
Cold Front: 38s35e 45s42e 50s47e into 53s42e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 10 in the north-west, otherwise W to NW 15 to
25 reaching 30 in the south-west towards mid-period, where it
will become SE 15 to 25 towards end of period but SW 15
to 25 over the central parts, spreading to the east by mid-
period.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 3.5m over the western half, reaching 4.0 to 4.5m in the
south-west, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 15 to 25 in the west but east at first, otherwise SE
to E 10 to 20 but W to SW 05 to 15 in the south-east.
VIS : Moderate in showers and rain, except over the central parts.
SEA STATE: 3.0 in the east at first, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 over the central parts, otherwise N to NE 05
to 15 but SE 10 to 20 in the south-east, reaching 25 in the
north-east.
VIS : Good but moderate in showers and rain in places in the north.
MADAGASCAR EAST:
WIND : N to NE 15 to 25 in the south, otherwise SE 10 to 20, reaching
25 in the north-west.
VIS : Moderate in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 in the west, spreading to the north-east by mid-
period, otherwise W to NW 15 to 25, reaching 30 in the south-
west by end of period.
VIS : Moderate to poor in showers and rain in the east at first, but
in the south-west by mid-period, spreading over the central
parts by end of period.
SEA STATE: 3.0 to 3.5m over the western half, reaching 4.0 to 5.0m in the
south-west towards end of period, with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
24/09/16 AT 1500UTC
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 WAM.
PART 2: GENERAL SYNOPSIS, 24/09/16 AT 1200UTC
– FILLING LOW 1013 HPA NEAR 36S/52E, WITH COLD FRONT CF OVER WESTERN WAM,
MOVING EASTWARD 15/20 KT.
– HIGH 1041 HPA NEAR 42S/77E, SLOWLY MOVING EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 24/09/16 AT 1800UTC TO 24/09/17 AT
1800UTC
WAM (30S/40S, 50E/65E): FRONTAL RAIN, SQUALLS AND SHOWERS (CF).
WIND: NORTHERLY 6 TO 7 AHEAD THE FRONT, LOCALLY 8 WITH GUSTS IN VINCINITY
OF THE FRONT AT BEGINNING, BACKING WEST 4 TO 5 BEHIND, THEN VARIABLE
2 TO 3.
SEA : ROUGH TO VERY ROUGH. NORTH SWELL 3 TO 4 M BEHIND THE FRONT.
VISI: POOR OR VERY POOR IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E): FEW SHOWERS.
WIND: ANTICLOCKWISE 3 TO 5 SETTING-UP NORTH 6 TO 7 BY WESTERN AT END.
SEA : MODERATE TO ROUGH. SOUTH-WEST SWELL 2 TO 3 M ABATING.
VISI: POOR UNDER PRECIPITATIONS.
CRO (40S/50S, 50E/65E): RAIN AND FRONTAL SHOWERS.
WIND: NORTHERLY 6 TO 7 AHEAD THE FRONT, BACKING WESTERLY 4 TO 6 BEHIND.
SEA : ROUGH TO VERY ROUGH. NORTH SWELL 3 TO 4 M BEHIND THE FRONT.
VISI: POOR OR VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E): SHOWERS OVER WESTERN AREA.
WIND: ANTICLOCKWISE 3 TO 5 IN NORTH, BUT NORTH-WEST 5 TO 7 IN SOUTH,
REACHING ALL THE AREA DURING THE DAY.
SEA : MODERATE TO ROUGH IN NORTH, ROUGH TO VERY ROUGH IN SOUTH.
SOUTH-WEST SWELL 3 M.
VISI: POOR UNDER PRECIPITATIONS.
ENDS DE CAPE TOWN RADIO/ZSC+
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