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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 28th OF MAY 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 282200 TO 292200 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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NIL.
SYNOPTIC CHART 12:00Z
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High 1026 hPa 31s42e.
Low 1014 hPa 28s13e Low 984 hPa 56s18e Low 1012 hPa 39s08w.
Cold Front: 40s10e 45s19e 50s20e into 56s18e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 15 to 25 in the south-east, otherwise N to NE 15 to 25
but NW 10 to 20 in the south-west spreading towards the south-
east by the end of the period.
VIS : Good, but moderate in showers and rain in the east.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 5.5m in the south-east, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE 15 to 25 in the south-west, otherwise E to SE 10 to 20.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m in the east, S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25.
VIS : Good over the central parts, otherwise moderate in showers.
MADAGASCAR EAST:
WIND : S to SE 15 to 25.
VIS : Good in the extreme south, otherwise moderate in showers.
SEA STATE: 3.0 to 3.5m in the south-east, SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : S to SW 20 to 30, but W to NW 10 to 20 in the west spreading
towards the east by mid-period.
VIS : Good, but moderate in showers and rain in the west spreading
towards the east by the end of the period.
SEA STATE: 4.0 to 5.0m reaching 6.5 to 7.5m in the east, subsiding to
3.0m in the south-west by mid-period, W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/05/28 AT 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE STRONGER THAN AVERAGES GIVEN HERE).
PART 1: WARNING :
– STRONG GALE FORCE 9 OVER CRO AND KER.
– GALE FORCE 8 OVER WAM AND AMS.
PART 2: GENERAL SYNOPSYS, 24/05/28 AT 1200 UTC :
– COLD FRONT CF LEAVES AMS AT FIRST.
– COLD FRONT CG MOVES QUICKLY OVER CRO THEN KER, ASSOCIATED WITH DEEPENING LOW 970 HPA MOVING ALONG 50S, 967 HPA AT END.
PART 3: FORECAST FOR 24 HOURS FROM 28/05/24 AT 1800 UTC TO 29/05/24 AT 1800 UTC :
WAM (30S/40S,50E/65E) : FRONTAL RAIN AND SHOWERS OVER SOUTHERN PART AT
FIRST.
WIND : ANTICLOCKWISE 3 TO 5 OVER NORTHERN PART THEN WESTERN, WESTERLY
6/7 OVER SOUTHERN, INCREASING LOCALLY 8 IN VICINITY OF FRONT,
THEN SOUTHWESTERLY 6/7 OVER EASTERN AT END.
SEA : VERY ROUGH TO HIGH. SW SWELL 3 TO 4 M THEN 5 TO 6 M.
VISI : POOR IN PRECIPITATIONS.
AMS (30S/40S,65E/80E) : FRONTAL RAINS AND SHOWERS OVERR SOUTHERN PART.
WIND : WESTERLY 4/5 INCREASING 6 TO 8 FROM NORTH TO SOUTH WITH SEVERE
GUSTS.
SEA : VERY ROUGH TO HIGH. SOUTH-WEST SWELL 3 TO 4 M THEN 5 TO 6 M.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
CRO (40S/50S,50E/65E) : RAIN AND FRONTAL SHOWERS, SQUALLS.
WIND : WESTERLY 7 TO 9 BACKING SW 7 THEN DECREASING WESTERLY 5/6 OVER
WESTERN PART AT END. SEVERE GUSTS.
SEA : HIGH TO VERY HIGH. WESTERLY SWELL 4 TO 6 M.
VISI : VERY POOR.
KER (40S/50S,65E/80E) : RAIN AND FRONTAL SHOWERS, SQUALLS.
WIND : WESTERLY 7/8 AND CLOCKWISE 7 TO 9 OVER SOUTHERN PART, THEN SW
7 OVER WESTERN AT END. SEVERE GUSTS.
SEA : HIGH TO VERY HIGH. WESTERLY SWELL 4 TO 6 M.
VISI : VERY POOR.
ENDS DE CAPE TOWN RADIO/ZSC+
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