WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
24th OF APRIL 2026 AT 13:30 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 242200 TO 252200 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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MARION FORTIES EAST: W to NW 35 to 40 in the south-west and south.
SYNOPTIC CHART 12:00Z
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High 1032 hPa 39s42e, High 1034 43s18w
Low 1006 hPa 44s06w,
1. Cold Front: 30s04w 35s02e 10s08e into 44s06w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 15.
VIS : Good, but moderate in showers and thundershowers in the northern
parts.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15.
VIS : Good, but moderate in showers and thundershowers in the north-
east.
ST HELENA (15S/30S, 00E/20W):
WIND : SE 10 to 20 reaching 25 to 30 over the southern parts.
VIS : Good, but moderate to poor in showers and thundershowers in the
west and southern parts.
SEA STATE: 3.0 to 4.0m over the southern parts spreading to the central
parts from the second half of the period, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 05 to 15, reaching 20 to 30 in the south-west from mid-
period but W to NW 05 to 15 over the south-eastern parts.
VIS : Good but moderate in showers in the south-western parts.
SEA STATE: 3.0m over the south-western parts for the second half of the
period, with S to SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : SE to E 15 to 25 becoming anti-cyclonic 05 to 15 over the
southern parts from mid-period.
VIS : Good, but moderate in showers and rain in the northern and
eastern parts.
SEA STATE: 3.0 to 4.0 over the northern and eastern parts, with S to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 10 in the east at first, otherwise W to NW 15 to
25, but S to SE 10 to 20 in the west, reaching 25 to 30 in the
south-west towards mid-period.
VIS : Good but moderate in showers and rain over the southern and
western parts.
SEA STATE: 3.0 to 4.0m in the south-west, spreading to the western parts
from mid-period while reaching 4.5m in the south-west with S to
SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : NE 15 to 25 in the west but SE to E 15 to 25 in the north-east,
otherwise, anticyclonic 05 to 10 in the south-east becoming N to
NW 10 to 20 in the extreme west from the first half of the
period.
VIS : Good but moderate in showers and thundershowers in the north-
west drifting to the north and central parts from mid-period.
SEA STATE: 3.0 to 4.0m, in the south-west and northern parts, with S to SW
swell but NE swell in the west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SE to E 10 to 20, reaching 25 to 30 in the south-east and central
parts but NE 15 to 25 in the south-west and variable 05 to 10 in
the north-west.
VIS : Good, but moderate to poor in showers and thundershowers in the
central and eastern parts as well as the south-western parts.
SEA STATE: 3.0 to 4.0m except in the north-west, reaching 4.5m over the
central parts for the first half of the period, with SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 but variable 05 to 10 in the extreme east.
VIS : Good, but moderate in showers and rain in the south-west and
north for the first half of the period.
SEA-STATE: 3.0 to 4.0m in the central and southern parts for the first half
of the period, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20.
VIS : Good, but moderate in showers and thundershowers in places and at
times.
SEA-STATE: 3.0m in the south and west, with S to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the north-east otherwise NW to W 20 to
30 reaching 35 to 40 in the south-west and south.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west from the second half of the period.
SEA STATE: 4.0 to 5.0m over the southern parts but 3.0 to 3.5m in the
central and north-eastern parts, with W to SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/04/24 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- STRONG GALE FORCE 9 OVER SOUTHERN KER.
- GALE FORCE 8 OVER CRO.
PART 2: GENERAL SYNOPSIS, 26/04/24 AT 0000UTC
- COLD FRONT AXIS: 37S/65E, 38S/70E, 40S/74E, 42S/80E, MOVING EASTWARD.
- HIGH1025 HPA NEAR 33S/79E, MOVING SLOWLY EASTWARD.
- HIGH 1032 HPA MOVING INTO THE SOUTHWEST WAM AT THE END.
PART 3: FORECAST FOR 24 HOURS FROM 26/04/24 AT 0600UTC TO 26/04/25 AT 0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS OVER EASTERN.
WIND : NW 4 TO 6 OVER NORTH-EASTERN, BAKING SOUTHERLY TO SE 4 TO 5 BEHIND,
REACHING LOCALLY 6 TO 7 OVER NORTH-WESTERN AT BEGINNING.
ANTICLOCKWISE 3 TO 5 AT END ALL OVER THE AREA.
SEA : ROUGH, LOCALLY VERY ROUGH OVER NORTH-WESTERN. SW SWELL 3 M.
VIS : POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS.
WIND : NORTH-WEST 5 TO 6 OVER SOUTH-EASTERN AHEAD THE FRONT, BACKING SOUTH-
WEST 3 TO 4 BEHIND. VARIABLE 3 TO 5 ALL OVER THE AREA IN LATE DAY.
SEA : MODERATE, BECOMING ROUGH BY SOUTHERN. SOUTH-WEST SWELL 3M OVER
SOUTHERN.
VIS : POOR IN RAIN.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS.
WIND : WESTERLY 6 TO 7, LOCALLY 8 OVER SOUTHERN. DECREASING 3 TO 5 OVER
NORTH-WESTERN AT END. GUSTS.
SEA : ROUGH TO VERY ROUGH, HIGH OVER SOUTH-EASTERN AT END. WESTERLY SWELL
3 TO 5M.
VIS : VERY POOR UNDER PRECIPITATION.
KER (40S/50S, 65E/80E)
SHOWERS AND SQUALLS.
WIND : WESTERLY 6 TO 7, LOCALLY 8 OVER SOUTHERN, INCREASING 9 OVER SOUTH-
EASTERN AT END. GUSTS.
SEA : VERY ROUGH TO HIGH. WESTERLY SWELL 3 TO 4M.
VIS : VERY POOR UNDER PRECIPITATION.=