WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
24TH OF JUNE 2026 AT 17:30 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 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:
====================
1. TRADES: S to SE 35 in the south-west during the first half of the period.
2. TRISTAN: NW to N 35 in the southern parts.
3. MARION FORTIES EAST : W to NW 35 in the central south and south-west in
the first half of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1028 hPa 36s05w, High 1036 hPa 40s70e
Low 964 hPa 65s70e, Low 976 hPa 50s27w
1. Cold Front: 23s45w 33s30w 39s24w 46s21w into 50s27w
2. Cold Front: 35s33e 40s40e 45s46e 50s51e into 65s70e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 20, reaching 25 in the west.
VIS : Good, but moderate in showers and rain in the west and north-west.
SEA STATE: 3.0m in the south-west, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but S to SW 05 to 15 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to S 15 to 25 reaching 30 in the extreme south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-east, with S to SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, reaching 30 to 35 in the south-west during the
first half of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the south-west.
SEA STATE: 3.0 to 3.5m, reaching 4.0 to 4.5m in the south-west, with S to SE
swell.
TRISTAN (30S/40S, 00E/20W):
WIND : SE 10 to 20 in the extreme north-east, otherwise, NW to N 15 to 25
reaching 30 to 35 in the southern parts.
VIS : Good, but moderate in showers and rain in the central south and
south-west.
SEA STATE: 3.0 to 3.5m in the north-east with SE swell, but 4.0 to 4.5m in
the south-west, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 15 to 25, reaching 30 in the extreme north-west, but NW 10
to 20 in the extreme south-west where it will reach 25 to 30
towards mid-period.
VIS : Good, but moderate in showers and rain in the eastern parts.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the eastern parts until mid-period,
with S to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to SE 05 to 25 in the north-west, but N to NW 15 to 25 in the
far east, elsewhere anticyclonic 05 to 15.
VIS : Good, but moderate in showers and thundershowers in the east.
SEA STATE: 3.5 to 4.5m in the west and central parts, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to NE 10 to 20 in the east, otherwise variable 05 to 10.
VIS : Good, but moderate in showers and thundershowers in places over
the eastern half.
SEA STATE: 3.0m in the east at first, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0m, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 in the eastern parts, otherwise W to NW 15 to 25,
reaching 30 to 35 in the central south and south-west in the first
half of the period.
VIS : Good but moderate in showers and rain at times, with snow-showers
in the south mainly in the .
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south-west from mid-
period, with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/24 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
NIL.
PART 2: GENERAL SYNOPSIS, 26/06/24 AT 1200UTC
- HIGH 1039 HPA NEAR 40S/69E, EXPECTED NEAR 38S/78E AT END.
- COLD FRONT AXIS 39S/40E AND 49S/52E, MOVING EASTWARDS 20KT.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/24 AT 1800UTC TO 26/06/25
AT 1800UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS, THEN RAIN AND FRONTAL SHOWERS IN THE SOUTH-WEST.
WIND: NORTHERN HALF: EASTERLY TO NORTH-EASTERLY 4/5, DECREASING 3/4
LATER.
SOUTHERN HALF: NORTHERLY TO NORTH-WEST 3/4, INCREASING NORTH-WESTERLY
4/5, LOCALLY 6 WITH THE FRONT, BACKING SOUTH 4 IN THE FAR SOUTH-WEST
AT END.
SEA : ROUGH, BECOMING MODERATE TO ROUGH.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: NORTHERN HALF: SOUTH-EASTERLY 5/6, DECREASING EAST 4/5 DURING THE
DAY.
SOUTHERN HALF:ANTICLOCKWISE 2/4, BUT SOUTH-EAST 4/5 IN THE NORTH-EAST
AT START.
SEA : ROUGH TO VERY ROUGH FROM WEST TO EAST, BECOMING MODERATE IN THE
SOUTH-WEST AT END. SOUTH-WESTERLY SWELL 3 TO 5 METERS, ABATING.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS, LOCALLY SQUALLS.
WIND: NORTH-WESTERLY 5/6, REACHING LOCALLY 7 WITH STRONG GUSTS NEAR
THE FRONT, DECREASING SOON BEHIND SOUTHERLY TO SOUTH-WESTERLY 4/5 IN
THE NORTH AND WESTERLY TO SOUTH-WESTERLY 4/5, THEN 6/7 IN THE SOUTH.
SEA : ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. WESTERLY SWELL 2 TO 4
METERS, BEHIND THE FRONT.
VIS : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS, THEN RAIN AND FRONTAL SHOWERS IN THE SOUTH-WEST AT
END.
WIND: WESTERLY TO NORTH-WEST 5/6, LOCALLY 7 WITH STRONG GUSTS IN THE
SOUTH WITH THE FRONT, DECREASING WESTERLY 3/4 IN THE FAR SOUTH-WEST
AT THE END BEHIND. BUT ANTICLOCKWISE 2/4 IN THE NORTH AT START.
SEA : ROUGH TO VERY ROUGH. SOUTH-WEST SWELL 3 TO 5 METERS ABATING,
THEN AT END WESTERLY SWELL 2 TO 4 METERS BEHIND THE FRONT IN THE FAR
SOUTH-WEST.
VIS : POOR IN PRECIPITATION.