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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 06th OF JULY 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 061000 TO 071000 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: N to NW 35 in the extreme south-east at first, as well as
in the south-west in the second half of the period.
2. DURBAN EAST: N to NW 35 in the extreme west in the second half of the
period.
3. MARION FORTIES EAST: Cyclonic 35 in the extreme north-east at first,
but S to SW 35 over the north-central parts at first.
SYNOPTIC CHART 12:00Z
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High 1024 hPa 30s18w.
Low 1012 hPa 25s13e Low 996 hPa 40s04e Low 988 hPa 50s18e
Low 1008 hPa 34s39e Low 1000 hPa 41s44e
1. Cold Front: 27s01w 30s03e 35s09e into 40s04e into 50s18e.
2. Cold Front: 27s45e 35s50e into 41s44e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 15 to 25 over the central parts spreading towards the
north-east by the end of the period, otherwise N to NW 20 to
30 reaching 35 in the extreme south-east at first, as well as
in the south-west in the second half of the period.
VIS : Moderate to poor in showers and thundershowers, but good over
the central parts at first.
SEA STATE: 3.0 to 4.0m, reaching 5.0m in the south-east and extreme
north-west, W to SW swell but SE swell in the south-east.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : S to SW 20 to 30 in the west spreading towards the east by the
end of the period, otherwise N to NW 15 to 25 reaching 35 in
the extreme west in the second half of the period.
VIS : Moderate in showers and thundershowers, becoming good in the
west from the west by mid-period.
SEA STATE: 5.0m in the extreme west central parts at first, otherwise 3.0
to 4.0m in the west spreading towards the central parts by the
end of the period, SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, but variable 05 to 10 in the south.
VIS : Good, but moderate showers in the extreme south-east.
SEA STATE: 3.0 to 3.5m in the extreme south, SW swell.
MADAGASCAR EAST:
WIND : S to SE 10 to 20 reaching 25 in the extreme north-east, but
N to NW 10 to 20 in the extreme south.
VIS : Moderate in light showers.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Cyclonic 10 to 20 in the north-east reaching 35 in the extreme
north-east at first, otherwise E to NE 15 to 25 but S to SW 15
to 25 in the west reaching 35 over the north-central parts at
first.
VIS : Moderate to poor in showers and rain in places.
SEA STATE: 3.0 to 4.0m in the north, spreading towards the south 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: 24/07/06 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 WAM, CRO AND KER.
PART 2: GENERAL SYNOPSYS, 24/07/06 AT 0000 UTC:
– LOW 982 HPA NEAR 54S/75E, AND OCCLUSION OVER KER.
– COLD FRONT CG OVER WESTERN WAM AND NORTHWESTERN CRO, WITH LOW 994 HPA NEAR 40S/43E.
– HIGH 1025 NEAR 32S/67E, SLOWLY MOVING EASTWARD WITH RIDGE EXTENDING TOWARD SOUTHWEST.
PART 3: FORECAST FOR 24 HOURS FROM 06/07/24 AT 0600 UTC TO 07/07/24 AT 0600UTC:
WAM (30S/40S, 50E/65E):
FRONTAL RAIN AND SHOWERS, SQUALLS.
WIND : ANTICLOCKWISE 3 TO 5 OVER EASTERN PART, NORTHERLY 6/7 WITH CG DECREASING 5. GUSTS ON SQUALLS.
SEA: MODERATE TO ROUGH. N SWELL 2 TO 4 M OVER WESTERN PART.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E):
SHOWERS.
WIND : ANTICLOCKWISE 3 TO 5 SETTING UP WESTERLY 6/7 OVER SOUTHWESTERN PART, LOCALLY 8 THE NIGHT.
SEA : ROUGH BUT VERY ROUGH OVER SOUTH-EASTERN PART. LONG SW SWELL, 2 TO 4M.
VISI : LOCALLY POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E):
FRONTAL RAINS AND SHOWERS.
WIND : NORTHEASTERLY 5/6 INCREASING LOCALLY 7 OVER NORTHWESTERN PART AND SOUTHWESTERLY 7/8 OVER SOUTHEASTERN PART BUT DECREASING 4/5 ON RIDGE AT FIRST. EASTERLY 5/6 AT END.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER FAR SOUTH-EASTERN PART. LONG SSW SWELL 2 TO 4 M OVER SOUTH-EASTERN PART. N SWELL 2 TO 3 M OVER NORTH-WESTERN PART.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E):
FRONTAL RAINS AND SHOWERS.
WIND : SOUTHWESTERLY 6 TO 8 THEN SOUTHERLY 6 TO 8. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH. W OR SW SWELL INCREASING 4 TO 6 M.
VISI : POOR TO VERY POOR IN PRECIPITATIONS.
ENDS THIS IS CAPE TOWN RADIO
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