WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
15TH OF MAY 2026 AT 16:00 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 152200 TO 162200 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: W to SW 35 in south and east at first.
SYNOPTIC CHART 12:00Z
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High 1028 hPa 37s07e, High 1031 hPa 43s25e and High 1023 30s40e
Low 1000 hPa 45s13w, Low 953 hPa 58s61e
1. Cold Front: 34s27w 35s22w 38s17w 40s14w 43s12w into 45s13w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 15, becoming variable 05 to 10
in the east towards mid-period.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to E 10 to 20, but N to NE 05 to 15 in the south.
VIS : Good.
SEA STATE: 3.0m in the south-west and central, subsiding towards the end
of the period, with S to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the central and south-eastern parts, with S to
SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the north-east and in place over the
central and western parts, otherwise W to NW 15 to 20 becoming
cyclonic 10 to 20 in the extreme south-west towards the end of
the period.
VIS : Good, but moderate in showers and rain central to the south-
eastern parts until mid-period, and becoming moderate in
showers and thundershowers in the west from mid-period.
SEA STATE: 3.0 to 3.5m except in the north-east, reaching 4.0m in the
south-west at first, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 15 in the south-west and central, becoming SW
10 to 20 in the extreme south-west towards the end of the
period, otherwise E to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the south-west at
first.
SEA STATE: 3.0 to 3.5m except in the west and subsiding in the central
from mid-period, reaching 4.0m in places in the east at first,
with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 10 to 20 in the north-eastern parts at first, but SW
10 to 20 in the south-eastern parts otherwise, variable 05 to
15 but becoming E to NE 10 to 15 in the west from mid-period.
VIS : Good, but moderate in rain and showers over the central and
east but clearing from mid-period.
SEA STATE: 4.0 to 5.0m at first subsiding to 3.0 to 3.5m towards mid-
period, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the north-east until mid-period
but anticyclonic 05 to 10 in the south-central parts until
after mid-period otherwise E to SE 10 to 20 reaching 25 in
places in the north-central.
VIS : Good, but moderate in showers and thundershowers in the
western and central parts across to the south-eastern parts
but clearing from the second half of the period.
SEA STATE: 3.0 to 3.5m in the first half of the period, with S to SW
swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 reaching 25 in the south-east.
VIS : Good, becoming moderate in showers and thundershowers in
the south-west towards mid-period.
SEA STATE: 3.0 to 3.5m in the south, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25, but NE 10 to 15 in the extreme south-west
mid-period.
VIS : Good over the central parts, but moderate in rain and showers.
SEA STATE: 3.0 to 3.5m in the south for the first part of the period,
with SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the south spreading to
the east.
VIS : Good but moderate to poor in rain and showers in the south,
with possible snow showers in the south st first.
SEA STATE: 4.0 to 5.0m reaching 6.0 to 8.0m in the south-east but
subsiding in the second half the period, 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)
26/05/15 AT 1400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- LOCALLY GALE OVER CRO THEN KER.
PART 2: GENERAL SYNOPSIS, 26/05/15 AT 1200UTC
- WAVING FRONT AXIS 31S/50E, 40S/67E, 45S/80E, ALMOST STATIONARY.
- SECOND FRONT FROM SOUTH-WESTERN WAM TO SOUTHERN KER, MOVING
EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/05/15 AT 1800UTC TO 26/05/16
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS WITH THE BOTH FRONTS.
WIND: NORTHWESTERLY 3 TO 5 BACKING SOUTHERLY 3 TO 5 BEHIND.
SEA : ROUGH TO VERY ROUGH. SW SWELL 2 TO 4 M.
VIS : POOR OR VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS AND FRONTAL RAINOVER SOUTHERN.
WIND: ANTICLOCKWISE 3 A 5 LOCALLY 6 IN SOUTH SETTING UP NW 5 TO 6
OVER SOUTHERN SOON.
SEA : ROUGH TO VERY ROUGH OVER SOUTHERN. LONG SW SWELL 2 TO 4 M.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS AND RAIN OVER NORTHERN. SCATTERED SHOWERS BEHIND.
WIND: WESTERLY 6/7, AT TIME 8. GUSTS.
SEA : VERY ROUGH TO HIGH. LONG W SWELL 2 TO 4 M.
VIS : POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN OR SHOWERS. SQUALLS.
WIND: NORTH-WESTERLY 5 TO 7 AT TIMES 8 AT THE END. GUSTS.
SEA : VERY ROUGH TO LOCALLY HIGH BY W SWELL 3 TO 5 M.
VIS : POOR OR VERY POOR IN PRECIPITATION.