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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 25th OF MAY 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 251000 TO 261000 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 NW 35 to 40 in the south spreading north-
eastward.
SYNOPTIC CHART 06:00Z
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High 34s03e 1030 hPa
Low 36s52e 1016 hPa
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15 in the central parts spreading
eastward. It will become W to NW 15 to 25 reaching 30 in the
west, but SW 20 to 30 in the extreme west at the end of the
period.
VIS : Good, but moderate in showers and thundershowers in the north-
east at first. It will become moderate in showers and
thundershowers in the west from midnight.
SEA STATE: 3.0 to 4.0m SW swell in the south-west from midnight reaching
5.0 to 6.0m at the end of the period.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10. It will become SW 15 to 20 in the extreme
south-west at the end of the period.
VIS : Good, but moderate in showers and rain in places.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good but moderate in thundershowers in places in the north.
MADAGASCAR EAST:
WIND : E to SE 15 to 25 reaching 30 in the north but NE 20 to 20 in
the southwest.
VIS : Good, but moderate in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 10 to 20 reaching 30 to 40 in the south spreading
north-eastward. It will become W to SW 25 to 30 in the west
from midnight.
VIS : Good, becoming moderate in showers and rain in the west in the
evening spreading eastward.
SEA STATE: 3.0 to 4.0m SW swell in the south reaching 5.0 to 6.0m, but
7.0 to 7.5m from midnight in the extreme south.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/05/25 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 OVER CRO AND KER.
PART 2: GENERAL SYNOPSYS, 24/05/25 AT 0000 UTC :
– COLD FRONT CF AXIS 32S/45E, 38S/55E, 34S/47E, 36S/51E ASSOCIATED WITH DEEPENING LOW 1012 HPA OVER WAM.
– COLD FRONT CG AXIS 47S/57E, 51S/60E, 57S/54E.
– HIGH 1023HPA NEAR 30S/53E.
PART 3: FORECAST FOR 24 HOURS FROM 25/05/24 AT 0600 UTC TO 26/05/24 AT 0600UTC :
WAM (30S/40S,50E/65E) :
FRONTAL RAINS, SHOWERS AND SQUALLS UNDER CF.
WIND : BECOMING CLOCKWISE 5 OR 6 WITH SEVERE GUSTS, LOCALLY 7 OVER
SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH BECOMING MODERATE TO ROUGH. SW SWELL 2 TO 3M.
VISI: POOR OR VERY POOR UNDER PRECIPITATION.
AMS (30S/40S,65E/80E) :
SCATTERED SHOWERS BUT FRONTAL SHOWERS UNDER CF AT END OVER SOUTH-WESTERN AREA.
WIND : SW 5 TO 6 OVER WESTERN AREA AT BEGINNING BECOMING ANTICLOCKWISE 2
TO 4 BY WESTERN AREA.
SEA : ROUGH TO VERY ROUGH. SW SWELL 4 TO 5M.
VISI : GOOD BUT MODERATE UNDER PRECIPITATION.
CRO (40S/50S,50E/65E) :
SNOW SHOWERS OVER SOUTHERN AREA.
WIND : W 4 TO 6 OVER NORTHERN AREA, 6 OR 7 WITH SEVERE GUSTS OVER
SOUTHERN AREA, BUT NW 6 TO 7 LOCALLY 8 BY WESTERNA AREA AT END.
SEA : ROUGH TO VERY ROUGH FROM N TO S. SW SWELL 3 TO 5 M.
VISI : POOR UNDER PRECIPITATION.
KER (40S/50S,65E/80E) :
FRONTAL RAINS AND SHOWERS UNDER CG. SNOW OVER SOUTHERN AREA.
WIND : W OR SW 6 TO 7 LOCALLY 8 WITH SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH. SW SWELL 5 TO 6M.
VISI : POOR TO VERY POOR UNDER PRECIPITATION.
ENDS DE CAPE TOWN RADIO/ZSC+
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