WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22ND OF MAY 2026 AT 08:30 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 221000 TO 231000 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. TRISTAN : NW 35 to 40 in the central and south-eastern parts in the first
half of the period and W to SW 35 to 40 in the south-west
spreading to the south-east by the end of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1024 hPa 33s03e, High 1026 hPa 33s40e
Low 1012 hPa 40s26e, Low 965 hPa 57s05w
1. Cold Front: 23s30w 27s25w 31s20w 37s15w 46s10w 55s00w into 57s05w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 10 to 20, but N to NW 15 to 25 in the south, becoming SW
to S 10 to 20 in the south-west.
VIS : Good, but moderate in showers and thundershowers in the
south-west.
SEA STATE: 3.0 to 4.0m in the south-west, reaching 4.5 to 5.0m from mid-
period, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south-west, otherwise S to SE 15 to 25.
VIS : Good.
TRISTAN (30S/40S, 00E/20W) :
WIND : NW 15 to 25 reaching 30 to 40 in the central and south-eastern
parts in the first half of the period, but W to SW 20 to 30 in the
west spreading to the east by the end of the period reaching 35 to
40 in the south-west spreading to the south-east by the end of the
period.
VIS : Good in the north-east, otherwise moderate to poor in showers and
thundershowers.
SEA STATE: 3.0 to 4.0m, except in the north-east, but 4.5 to 5.5m in the west
and south, reaching 6.5 to 7.0m in the south-west spreading to the
south-east by the end of the period, with W to SW swell, but NW in
the east.
CAPE WEST (30S/40S, 00E/20E):
WIND : SE 10 to 15 in the north-east, otherwise anticyclonic 05 to 15,
but N to NW 15 to 25 in the south spreading to the north-west from
mid-period while reaching 30 in the south-west.
VIS : Good, but moderate in showers and rain in the south-east until
mid-period and in the south-west from mid-period.
SEA STATE: 3.0 to 4.0m in the south-west, reaching 4.5m from mid-period, with
W to NW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the east, otherwise N to NW 15 to 25, but
SW to W 10 to 20 in the west spreading to the central parts by the
end of the period.
VIS : Good, but moderate in showers and thundershowers in places
in the west and central parts.
SEA STATE: 3.0 to 4.0m in the extreme east, reaching 5.0m in the south-east
until mid-period, with S to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the south-west reaching 25 until mid-period,
but SW to S 10 to 20 inthe south-east, otherwise SE to E 10 to
20.
VIS : Good, but moderate in showers and rain in the west from mid-
period.
SEA STATE: 3.0 to 4.0m in the east, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15, reaching 20 in the south-east until mid-period.
VIS : Good.
SEA STATE: 3.0m in the south-east until mid-period, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20, reaching 25 in the north.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 3.5m in the south, with S swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 15 to 25 in the east until mid-period, otherwise NW to N 05 to
15, but cyclonic 20 to 30 in the north-west from mid-period.
VIS : Good, but moderate in showers and rain in the north-west towards
mid-period.
SEA STATE: 3.0 to 4.0m in the east, reaching 5.0 to 6.0m until mid-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)
26/05/22 AT 0700UTC
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) CURRENTLY AFFECTING WAM AND CRO.
- STORM (FORCE 10) FORECASTED OVER KER.
- STRONG GALE (FORCE 9) FORECASTED OVER AMS.
PART 2: GENERAL SYNOPSIS, 26/05/22 AT 0000UTC
- LOW-PRESSURE SYSTEM 976 HPA NEAR 48S/60E, MOVING NORTH-EASTWARD.
COLD FRONT CF 37S/50E, 38S/60E, 40S/65E, 43S/67E, 46S/66E AND WARM
FRONT WF 47S/66E, 45S/70E, 41S/72E.
- HIGH-PRESSURE SYSTEM 1026 HPA WEST OF WAM MOVING WESTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/05/22 AT 0600UTC TO 26/05/23 AT
0600UTC
WAM (30S/40S, 50E/65E)
RAIN, SHOWERS AND SQUALLS WITH CF.
WIND : SOUTH-WESTERLY 5/6, LOCALLY 7 OVER THE SOUTHERN, INCREASING 8/9 OVER
EASTERN AREAS, THEN BECOMING ANTICLOCKWISE 3/5 OVER THE WESTERN AREAS
BY THE END OF THE FORECAST PERIOD. STRONG GUSTS.
SEA : ROUGH TO VERY ROUGH. SOUTH-SOUTH-WESTERLY SWELL 3 TO 5 M OVERNIGHT.
VIS : POOR TO VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
RAIN, SHOWERS AND THUNDERSTORMS WITH A COLD FRONT CF.
WIND : NORTH-WESTERLY 5 TO 7, LOCALLY 8 AHEAD OF THE COLD FRONT, VEERING
WESTERLY 7. STRONG GUSTS.
SEA : ROUGH TO VERY ROUGH. SOUTH-WESTERLY SWELL 3 TO 5 M.
VIS : POOR TO VERY POOR IN RAINFALL.
CRO (40S/50S, 50E/65E)
RAIN OR SNOW BEHIND THE COLD FRONT.
WIND : SOUTH-WESTERLY 7 TO 9, EASING AND BECOMING ANTICLOCKWISE 3 TO 5 OVER
WESTERN AT THE END.
SEA : ROUGH TO VERY ROUGH. WESTERLY SWELL INCREASING 3 TO 5 M.
VIS : POOR TO VERY POOR IN THE RAIN.
KER (40S/50S, 65E/80E)
SHOWERS AND SQUALLS, FOLLOWED BY RAIN OR SNOW WITH WF AND CF.
WIND : NORTH 7 TO 8, BECOMING 3 TO 5 FROM THE WEST IN LOW-PRESSURE AREAS.
STRONG GUSTS.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER NORTHERN. SWELL FROM THE WEST,
4 TO 5 M.
VIS : POOR TO VERY POOR IN PRECIPITATION.