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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 OCTOBER 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 151000 TO 161000 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: S to SE 35 to 40 in the central-north, spreading to the
north-east towards mid-period but E to NE 35 in the west.
2. DURBAN EAST: SW to S 35 to 40 over the western half, drifting over the
central parts by mid-period, while moderating from the
west.
SYNOPTIC CHART 06:00Z
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High 1035 hPa 41s23e, High 1022 hPa 26s70e
Low 951 hPa 63s03w, Low 963 hPa 57s67e
1. Cold Front: 34s11w 41s04w 46s04e 50s11e 60s19e into 63s03w 2. Cold Front: 26s38e 35s45e 40s51e 45s62e 50s75e into 57s67e
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : NW 10 to 20 in the north-east at first, otherwise S to SE 20
to 30 reaching 35 to 40 in the central-north, spreading to the
north-east towards mid-period but E to NE 25 to 35 in the
west.
VIS : Good, but moderate to poor in showers and rain in the north-
east.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m over the central parts,
spreading to the north-east by mid-period, while becoming with
E to NE swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE to N 15 to 25 in the north-east at first, otherwise SW to S
15 to 25 reaching 30 to 40 over the western half, drifting
over the central parts by mid-period, while becoming SE 15 to
25 in the west but NE 15 to 25 in the south-west towards end
of period.
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.5 to 4.5m over the western half spreading to the east
towards end of period, while reaching 5.0 to 7.0m in south and
south-east, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : SW to S 10 to 20 reaching 25 to 30 in the south-west during
the first half of the period but NE to E 10 to 20 in the
north.
VIS : Good, but moderate in rain and showers over the southern half,
spreading to the north towards end of period.
SEA STATE: 3.5 to 4.5m in the south-west, spreading over the southern
half by end of period, with SW to S swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 in the north, otherwise NE to N 10 to 20 but
W to NW 15 to 25 in the south. It will become SW 15 to 25 in
the south-west towards mid-period
VIS : Moderate to poor in showers and rain.
SEA STATE: 3.0 to 3.5m in the extreme south-west towards end of period,
with SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 reaching 30 in the south-east at first. It will
become W to NW 20 to 30 in the south-west towards mid-period,
spreading to the south-east towards end of period.
VIS : Good, becoming moderate in snow-showers in the south during
the second half of the period.
SEA STATE: 5.0 to 7.0m but 3.5 to 4.5m in the west, spreading to the east
by mid-period, with mainly W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
24/10/15 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 NORTH-WESTERN WAM, FAR SOUTHERN CRO AND KER.
PART 2: GENERAL SYNOPSIS, 24/10/15 AT 0000UTC
– HIGH 1022 HPA NEAR 27S/69E, MOVING EASTWARD SLOWLY.
– WAVING FRONT AXIS: 30S/38E, 40S/50E, 42S/65E, 44S/71E.
PART 3: FORECAST FOR 24 HOURS FROM 24/10/15 AT 0600UTC TO 24/10/16 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAINS AND SHOWERS.
WIND: NW 4 TO 6, INCREASING 7 AHEAD THE FRONT OVER FAR SOUTH-EASTERN PART
AT FIRST, BACKING SOON S 6 TO 7 WITH SEVERE GUSTS BY SOUTHERN,
LOCALLY S 8 OVER FAR NORTH-WESTERN AT END.
SEA : BECOMING ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. ARRIVAL BY
SOUTHERN OF A LONG SSW SWELL INCREASING, 2 M TO 5 M FROM NORTH TO
SOUTH AT END.
VIS : POOR TO VERY POOR IN PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
RAINS AND SCATTERED SHOWERS OVER SOUTHERN LATER.
WIND: WESTERLY 4 TO 6, INCREASING 7 OVER FAR SOUTHERN, THEN SETTING-UP S
5 OR 6 OVER SOUTH-WESTERN LATER.
SEA : MODERATE TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL, 2 TO 3 M
INCREASING 3 TO 5 M OVER SOUTH-WESTERN AT END.
VIS : POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
RAINS AND SCATTERED SHOWERS OVER NORTHERN LATER.
WIND: SW 6 TO 7 WITH SEVERE GUSTS, LOCALLY 8 OVER FAR SOUTHERN AT FIRST,
DECREASING W OR SW 5 TO 6 BY WESTERN.
SEA : VERY ROUGH TO HIGH. LONG SW SWELL, 4 TO 6 M LOCALLY 7 M OVER
SOUTHERN AREA.
VIS : POOR TO VERY POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
FRONTAL RAINS AND SHOWERS. SNOWY SHOWERS OVER SOUTHERN
WIND: WESTERLY 6 TO 7 WITH SEVERE GUSTS, LOCALLY 8 OVER SOUTHERN AREA.
SEA : VERY ROUGH TO HIGH. LONG SW SWELL, 4 TO 6 M.
VIS : VERY POOR IN PRECIPITATIONS.
ENDS DE CAPE TOWN RADIO/ZSC+
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