WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
30TH OF APRIL 2026 AT 13:30 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
NOTE: WX OBSERVATIONS.
======================
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 302200 TO 012200 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:
====================
1. CAPE WEST: NW to W 35 in the central-east towards mid-period.
2. CAPE EAST: W to NW 35 in the west from mid-period and in some
places in the central east.
3. MARION FORTIES EAST: SW to W 35 to 40 in the south spreading
to the south-east until mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1027 hPa 26s00w, High 1022 hPa 28s40e
Low 995 hPa 44s11w, Low 957 56s41e.
1. Cold front: 39s16w 40s12w 41s11w 42s14w into 44s11w.
2. Cold Front: 41s43e 47s53e 55s53e 58s42e into 56s41e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 20.
VIS : Good, but moderate in showers and thundershowers in the extreme
northern parts.
SEA STATE: 3.0m, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 10 in the east.
VIS : Good.
SEA STATE: 3.0m in the south-west, with S to SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 10 to 20 in the central and north becoming N to NE 05 to
15 over the central-west until mid-period, but NW 10 to 20 in the
south.
VIS : Good.
SEA STATE: 3.0m, except in the central-east, with SW swell over the central
and south otherwise SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 reaching 25 over the north-east but variable 05
to 10 over the south-west, spreading to the south-east from mid-
period and W to NW 10 to 15 over the south-west.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 15 to 25 in the extreme north, otherwise SW to
W 15 to 25.
VIS : Good, but moderate to poor in showers and thundershowers in
the central, north and over the south-west towards the end of the
period.
SEA STATE: 4.5 to 5.0m in the south spreading to the south-east towards mid-
period when it will subside, otherwise 3.0 to 4.0m, with W to SW
swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to W 15 to 25 reaching 30 to 35 in the central-east towards
mid-period, otherwise SW 10 to 20, reaching 25 in the
south, spreading to the south-east from mid-period.
VIS : Moderate to poor in showers and rain in the west across the
central to the south-east but clearing in the west towards end of
the period.
SEA STATE: 3.0m to 4.0m but 4.5 to 5.0m over the east, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : SW 10 to 20 over the central, otherwise W to NW 15 to 25,
reaching 30 to 35 in the west from mid-period and in some
places in the central east.
VIS : Moderate to poor in showers and thundershowers in the south-west
and central, spreading to the east towards the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the central parts, spreading
to the south-east from mid-period, and 5.0 to 6.0m in the west by
end of period, with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 10 to 20 in the west reaching 25 to 30 spreading to the
central-south towards mid-period, but SW 10 to 15 in the south-
west spreading to the north-west from mid-period. Otherwise, E to
NE 10 to 15 but anticyclonic 05 to 10 in the east from mid-
period.
VIS : Moderate in showers and rain in places in the west and central
parts.
SEA STATE: 3.0 to 4.0m but 4.5 to 5.0m in the east at first, NW in the south
west at first, otherwise with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 reaching 25 in the south-east at first,
moderating to variable 05 to 15 over the south and central from
mid-period.
VIS : Moderate in showers and thundershowers in places in the north at
first, otherwise good.
SEA STATE: 3.0 to 3.5m in the south and central parts at first, with S to SW
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 10 to 15 reaching 20 over the extreme north-west becoming
NE 10 to 15 over the south-west.
VIS : Moderate in showers and rain in places over the west.
SEA STATE: 3.0 to 4.0m in the south spreading to the central and
east until early afternoon with S to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW to W 15 to 25, reaching 35 to 40 in the south spreading
to the south-east until mid-period but N to NW 15 to 20 over the
extreme north becoming variable 05 to 10 over the central parts
and SE to E in the north towards mid-period.
VIS : Moderate in showers and rain in north and only in the south until
mid-period.
SEA STATE: 4.0 to 5.0m reaching 5.5 to 6.5m in the north and 7.5 to 8.5m in
the central and south-west but 9.0 to 10.0m in the central-south
spreading to the extreme south-east until mid-period, with SW to
W swell.
AREA 2:
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FQIO20 FMEE 300509
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/04/30 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER ALL AREAS.
PART 2: GENERAL SYNOPSIS, 26/04/30 AT 0000UTC
- THUNDERY LOW 983 NEAR 43S/55S, MOVING SLOWLY EASTWARD, FILLING SOON.
ASSOCIATED FRONTS CROSSING AREAS WITH LOCALLY HEAVY RAIN.
- HIGH 1023 OVER WAM AT END.
PART 3: FORECAST FOR 24 HOURS FROM 26/04/30 AT 0600UTC TO 26/05/01 AT 0600UTC
WAM (30S/40S, 50E/65E)
RAIN, SHOWERS. THUNDERSQUALLS OVER EASTERN AT FIRST.
WIND: W 4 TO 6 IN NORTH, 6/7 LOCALLY 8 IN SOUTH, DECREASING LATER
ANTICLOCKWISE 2 TO 4 OVER NORTHERN. SEVERE GUSTS.
SEA : VERY ROUGH OR HIGH. LONG SW SWELL INCREASING 5 OR 6 M.
VIS : POOR OR VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN AND SHOWERS. SQUALLS OVER WESTERN.
WIND: N 4 TO 6 AND INCREASING 7/8 IN THE FRONT BACKING W 4 TO 6, AT TIME 7
BEHIND. GUSTS.
SEA : MODERATE TO ROUGH, BECOMING ROUGH TO VERY ROUGH OVER WESTERN AREA.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN AND SHOWERS.
WIND: CLOCKWISE 4 TO 6, LOCALLY 7/8 OVER NORTHERN. SETTING UP W 6/7 , AT
TIME 8 IN SOUTH. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER NORTHERN AND SOUTHWESTERN.
ARRIVAL OF A LONG SW SWELL AT END.
VIS : POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN, SHOWERS AND SQUALLS.
WIND: N 6 TO 7 AT TIME 8 AHEAD THE FRONT , DECREASING TEMPORARILY VARIABLE 2
TO 4 IN SOUTH-WESTERN SOON, INCREASING LATER W OR NW 5 TO 7. SEVERE
GUSTS.
SEA : ROUGH OR VERY ROUGH, OCCASIONALLY HIGH OVER NORTHWESTERN.
VIS : POOR OR VERY POOR IN PRECIPITATION.