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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 15th OF MAY 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 152200 TO 162200 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 in the south-east, as well as in the
south-west by mid-period. It will become SW 35 in the west by the end
of the period.
2. MARION FORTIES EAST: W to NW 35 to 40 in the north.
SYNOPTIC CHART 12:00Z
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High 1022 hPa 30s09e High 1026 hPa 34s51e.
Low 976 hPa 46s03w Low 972 hPa 53s28e.
1. Cold Front: 31s18w 35s09w 40s01e into 46s03w.
2. Cold Front: 36s33e 40s37e 45s38e 50s37e into 53s28e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 15 to 25 reaching 35 to 40 in the south-east, as well
as in the south-west by mid-period. It will become SW 25 to 35
in the west by the end of the period.
VIS : Good over the central parts, otherwise moderate in showers and
rain.
SEA STATE: 3.0 to 4.0m in places, reaching 5.0 to 5.5m in the extreme
south, SW swell but SE swell in the south-east.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE 10 to 20, but N to NW 10 to 20 in the south-west spreading
towards the south-east by mid-period.
VIS : Good, but moderate in showers in the north.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 reaching 30 in the extreme north-east.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 3.5m in the extreme north-east, SE swell.
MADAGASCAR EAST:
WIND : E to SE 20 to 30, but N to NE 10 to 20 in the extreme south VIS : Good in the extreme south, otherwise moderate in showers and
thundershowers, but poor in the north-east.
SEA STATE: 3.0 to 3.5m in the south, SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 20 to 30, reaching 35 to 40 in the north.
VIS : Moderate to poor in showers and rain in places, becoming poor
in the south-west by mid-period.
SEA STATE: 3.0 to 4.0m, but 5.0 to 6.0m in the west reaching 7.0m over
the west central parts, E to SE swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/05/15 AT 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE STRONGER THAN AVERAGES GIVEN HERE).
PART 1: WARNING :
GALE TO LOCALLY STORM CONTINUING OR EXPECTED OVER ALL AREAS.
PART 2: GENERAL SYNOPSYS, 24/05/15 AT 1200 UTC :
– THUNDERY LOW 995 OVER FAR NORTHEAST OF KER NEAR 41S/77E, MOVING RATHER
QUICKLY SOUTHEASTWARDS AND DEEPENING. ASSOCIATED COLD FRONT AXIS
26S/74E, 32S/79E, 42S/79E.
– ANOTHER THUNDERY COLD FRONT AXIS 38S/35E, 43S/40E, 49S/40E, 53S/31E,
EXPECTED CROSSING SOON CRO AND SOUTH OF WAM, THEN KER AND SOUTH OF AMS
AT END.
– HIGH 1029 FROM WEST OVER NORTH OF WAM, WEAKENING A LITTLE.
PART 3: FORECAST FOR 24 HOURS FROM 15/05/24 AT 1800 UTC TO 16/05/24 AT 1800 UTC :
WAM (30S/40S,50E/65E) :
FRONTAL RAINS OR SHOWERS, AT TIMES THUNDERY.WIND:
– IN NORTH : ANTICLOCKWISE 3 TO 5.
– IN SOUTH : WEST 5 OR 6, INCREASING SOON NORTHWEST 6 OR 7, AT TIMES 8, DECREASING WEST 6 OR 7 FROM WEST AT END. SEVERE GUSTS.
SEA : ROUGH OR VERY ROUGH AND CROSSED, BECOMING VERY ROUGH OR HIGH IN
SOUTH LATER, BUT DECREASING MODERATE OR ROUGH IN NORTH.
VISI: POOR OR VERY POOR IN RAINS OR SHOWERS.
AMS (30S/40S,65E/80E) :
FRONTAL RAINS OR SHOWERS, AT TIMES THUNDERY.WIND:
– IN SOUTHWEST : VEERING NORTHWEST 5 OR 6 FROM WEST, INCREASING 7 OR
8 AT END WITH SEVERE GUSTS.
– IN NORTHEAST : SOUTHWEST 5 OR 6, BUT 7 OR 8, AT TIMES 9, IN FAR SOUTHEAST AT FIRST WITH SEVERE GUSTS, DECREASING SOUTH 4 OR 5 SOON.
SEA : ROUGH OR VERY ROUGH, CROSSED, LOCALLY HIGH AT FIRST IN FAR
SOUTHEAST.
VISI: POOR OR VERY POOR IN RAINS OR SHOWERS.
CRO (40S/50S,50E/65E) :
FRONTAL RAINS OR SHOWERS, AT TIMES THUNDERY.
WIND: WEST OR NORTHWEST 5 OR 6, INCREASING VERY SOON 7 OR 8 FROM WEST, AT
TIMES 9 IN NORTH. SEVERE GUSTS.
SEA : ROUGH OR VERY ROUGH, CROSSED, BECOMING LOCALLY HIGH IN NORTH LATER.
VISI: POOR OR VERY POOR IN RAINS OR SHOWERS.
KER (40S/50S,65E/80E) :
FRONTAL RAINS OR SHOWERS, AT TIMES THUNDERY.
WIND: NORTHWEST 5 OR 6, AT TIMES 7, BUT CLOCKWISE 8 OR 9, AT TIMES 10, IN FAR NORTHEAST AT FIRST, INCREASING NORTH OR NORTHWEST 7 OR 8 AT END FROM WEST. SEVERE GUSTS.
SEA : ROUGH OR VERY ROUGH, CROSSED, LOCALLY HIGH AT FIRST IN FAR
NORTHEAST.
VISI: POOR OR VERY POOR IN RAINS OR SHOWERS.
ENDS DE CAPE TOWN RADIO/ZSC+
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