WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
22ND OF MAY 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 222200 TO 232200 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. TRISTAN : W to SW 35 to 40 in the south-west spreading to the south-east
by mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1024 hPa 31s05e, High 1026 hPa 33s42e
Low 1012 hPa 40s30e, Low 986 hPa 47s07w
1. Cold Front: 25s25w 30s20w 35s15w 40s10w 45s08w into 47s07w.
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m in the south-west towards the end of the period, with SW
swell.
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 : N to NW 10 to 20 in the south-east and SW to S 10 to 20 in the
south-west, otherwise E to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m in the south-west spreading to the north-west towards
the end of the period, reaching 4.5 to 5.0m in the extreme south-
west, 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 20 to 30 in the east, otherwise W to SW 15 to 25 reaching 30 to
40 in the south-west spreading to the south-east by mid-period.
VIS : Moderate in showers and rain, but poor in places in the east until
mid-period.
SEA STATE: 3.5 to 4.5m, except in the extreme north-east, reaching 5.0 to
6.5m in the south-west spreading to the south-east from mid-
period, with W to SW swell, but NW in the east until mid-period.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to W 20 to 30, but anticyclonic 05 to 15 in the central north
and north-east.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 4.0m in the south-west spreading to the south-east towards
the end of the period, reaching 4.5m in the south-west, with
W to NW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the east, but N to NW 15 to 25 in the
central parts spreading to the east towards the end of the period,
otherwise SW to W 10 to 20.
VIS : Good, but moderate in showers and thundershowers in places
in the north-west and central parts.
SEA STATE: 3.0 to 3.5m in the east, reaching 4.0 to 4.5m 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 west, otherwise SE to E 05 to 15, becoming
variable 05 to 10 in the west towards the end of the period.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 4.0m in the east, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 10 to 20, reaching 25 in the north-west.
VIS : Good, but moderate in showers and rain in the south-west.
SEA STATE: 3.0 to 3.5m in the south until mid-period, with S swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : NW to N 05 to 15, but cyclonic 20 to 30 in the north-west drifting
to the north-east towards the end of the period.
VIS : Good, but moderate in showers and rain in the north-west drifting
to the north-east towards the end of the period.
SEA STATE: 3.0 to 4.0m in the east 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.