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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 20th OF JULY 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 202200 TO 212200 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: NW to W 35 in the central and west spreading to
the east by the second half of the period.
SYNOPTIC CHART 12:00Z
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High 1028 hPa 34s13e
Low 1016 hPa 38s52e
Cold Front 1: 42s45e 49s44e 58s37e into 58s32e.
Cold Front 2: 37s25w 44s22w into 55s20w.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW 15 to 25 in the extreme north-east at first, otherwise W to
SW 15 to 25, reaching 30 in the west.
VIS : Moderate in showers and rain in places, but good in the
extreme west.
SEA STATE: Nil in the east, otherwise 3.5 to 4.5m reaching 5.5 to 6.0 in
the west and central, SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NW 10 to 20 in the east in the first half of the period,
otherwise anti-cyclonic 10 to 20.
VIS : Good in the central, otherwise moderate in showers and rain in
places at times.
SEA STATE: 3.0 to 4.0m in the south-west spreading to the south-central
by the mid-period, SW swell.
MOZAMBIQUE CHANNEL:
WIND : Anti-cyclonic 10 to 20 in the south, otherwise SE to E 10 to
20, but 25 in the extreme north-east.
VIS : Good but moderate in showers in the extreme south.
MADAGASCAR EAST:
WIND : N to NE 10 to 20 in the south, otherwise S to SE 15 to 25 but
variable 05 to 10 in the extreme south-west.
VIS : Moderate in showers and rain, but good in the central.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW to W 15 to 25 reaching 35 in the central and west
spreading to the east by the second half of the period.
VIS : Good in the east at first, otherwise moderate to poor in
showers and rain.
SEA STATE: 3.5 to 4.5m but 5.5 to 6.5m in the west, SW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/07/20 AT 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE STRONGER THAN AVERAGES GIVEN HERE).
PART 1: WARNING : NIL.
PART 2: GENERAL SYNOPSYS, 24/07/20 AT 1200 UTC :
– COLD FRONT OVER FAR NORTH-EASTERN AMS AT FIRST AND LEAVING SOON AMS
AREA.- WAVING FRONT OVER WESTERN WAM AND WESTERN CRO AT FIRST,AND MOVING EASTWARD SLOWLY.- HIGH 1022 HPA NEAR 48S/65E, MOVING NORTH-EASTWARD, EXPECTED 1028 HPA OVER AMS NEAR 37S/74E AT END.
PART 3: FORECAST FOR 24 HOURS FROM 20/07/24 AT 1800 UTC TO 21/07/24 AT 1800 UTC :
WAM (30S/40S,50E/65E) :FRONTAL RAIN AND SHOWERS.
WIND: ANTICLOCKWISE 2 TO 4, INCREASING SOON N 4 TO 6 AHEAD THE FRONT
OVER SOUTHERN,AND BACKING LATER W 3 TO 4 BY WESTERN.
SEA: MODERATE TO ROUGH. ARRIVAL LATER BY WESTERN OF A LONG WSW SWELL,
2 TO 3 M.
VIS: POOR IN PRECIPITATION.
AMS (30S/40S,65E/80E) :FEW SHOWERS AT FIRST OVER EASTERN, AND AT END OVER
SOUTH-WESTERN.
WIND: ANTICLOCKWISE 2 TO 4 BUT S OR SW 4 TO 6 OVER EASTERN AT FIRST
DECREASING GRADUALLY AND N 4 TO 6 OVER SOUTH-WESTERN AT END.
SEA: ROUGH LOCALLY VERY ROUGH OVER SOUTH-EASTERN, BECOMING MODERATE BY
WESTERN. AT FIRST, W SWELL, 2 TO 3 M OVER NORTHERN DECREASING
GRADUALLY, AND S SWELL 2 TO 3 M OVER SOUTHERN PUIS OVER THE
ENTIRE AREA AT END.
VIS: MODERATE IN PRECIPITATION.
CRO (40S/50S,50E/65E) :RAIN AND FRONTAL SHOWERS.
WIND: NORTHERLY 4 TO 6, LOCALLY 7 WITH SEVERE GUSTS OVER NORTH-EASTERN,
BECOMING ANTICLOCKWISE 2 TO 4 BY WESTERN, AND SETTING-UP NW 6 OR
7 OVER SOUTH-WESTERN AT END.
SEA:MODERATE TO ROUGH, BECOMING GRADUALLY ROUGH TO VERY ROUGH FROM
EAST TO WEST. ARRIVAL LATER BY WESTERN OF A LONG W SWELL, 2 TO 4 M
OVER WESTERN.
VIS: POOR IN PRECIPITATION.
KER (40S/50S,65E/80E) : FEW SHOWERS, FRONTAL RAIN AND SHOWERS OVER
WESTERN AT END.
WIND: S 4 TO 6 AND DECREASING SOON ANTICLOCKWISE 2 TO 4 BY WESTERN AND
SETTING-UP LATER NW OR W 5 TO 6 WIT GUSTS BY WESTERN.
SEA: MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER SOUTH-EASTERN AT
FIRST. S SWELL, 2 TO 3 M OVER EASTERN.
VIS: POOR IN PRECIPITATION.
ENDS THIS IS CAPE TOWN RADIO
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