WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
24th OF JULY 2026 AT 16:00 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. CAPE EAST : W to SW 35 over the central-north, but NW 35 in the south.
2. DURBAN EAST: S to SE 35 over the central parts while spreading to the
east by the end of the period.
3. MARION FORTIES EAST: W to NW 35 to 40 over the central parts but 45 in the
south-west, spreading to the south-east from mid-
period.
SYNOPTIC CHART 12:00Z
=====================
High 1032 hPa 30s03e, High 1032 hPa 40s70e, Low 1016 hPa 45s49e,
Low 961 hPa 62s06w, Low 964 hPa 64s30e
1. Cold Front: 46s18w 49s07w 55s00e 59s02e 63s08w into 62s06w.
2. Cold front: 50s26e 55s26e 59s39e 67s37e into 64s30e.
3. Cold Front: 26s39e 31s40e 46s49e into 45s49e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 15 to 20, variable 05 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south, otherwise E to SE 15 to 20.
VIS : Good.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the north-east, otherwise E to SE 10 to
20, reaching 25 over the central parts.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-at first, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the north-east, otherwise NW to W 15
to 25, reaching 30 in the south-east at first, but S to SE
15 to 25 in the south-west.
VIS : Good but moderate in showers and rain across the north-west,
central parts and the south-east.
SEA STATE: 3.0 to 3.5m in the south, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anti-cyclonic 05 to 15 in the north-west, otherwise NW to W 15 to 25 reaching 30 in the south-east moderating by mid-period,
but SE 15 to 20 in the north-east.
VIS : Good but moderate in showers and rain in the south-west but in
south-east at first.
SEA STATE: 3.0 to 4.0m in the south-east subsiding by towards mid-period,
with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Variable 05 to 10 in the north-east and south-west, otherwise W to SW 15 to 25, reaching 30 to 35 over the central-north, but NW 25 to 35 in the south.
VIS : Good but moderate to poor in showers and thundershowers in the
North-east and south-west. moderating from the end of the period from the south-west.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m over the central parts while
spreading to the east from mid-period, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 05 to 10 in the east, otherwise S to SE 10 to 20,
reaching 25 to 35 over the central parts while spreading to
the east by the end of the period.
VIS : Good but moderate in showers and thundershowers over the
central parts and the east, clearing towards the end of the
period.
SEA STATE: 3.0 to 3.5m in the east at first, reaching 4.5 to 6.5m over the central parts while spreading to the east with S to SW swell, but E swell in the east.
MOZAMBIQUE CHANNEL:
WIND : S to SW 05 to 15 in the south, but SE 10 to 20 in the northeast, otherwise variable 05.
VIS : Good becoming moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m in the south, but 4.5m in the south-east, with S
swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 over the central parts, otherwise S to SE 15 to
25, but N to NW 10 to 20 in the south.
VIS : Moderate in showers and rain in the extreme south, otherwise
good.
SEA STATE: 3.0m in the extreme south subsiding by mid-period, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 05 to 15 in the north-east, otherwise W to NW 15 to 25 reaching 30 to 40 over the central parts but 45 in the south- west, spreading to the south-east from mid-period.
VIS : Good but moderate showers in the north-east at first, becoming
poor in snow-showers in the south by mid-period.
SEA STATE: 7.0 to 8.0m, but 8.0 to 10.0m in the southern-half, 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)
26/07/24 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
GALE EXPECTED AT END OVER CRO.
PART 2: GENERAL SYNOPSIS, 26/07/24 AT 1200UTC
- THUNDERY LOW 1011 NEAR 31S/41E, SLOWLY MOVING EASTWARDS AND
DEEPENING A LITTLE. EXPECTED 1008 NEAR 30S/49E THE 25 AT 12 UTC.
- LOW 1008 NEAR 46S/50E, MOVING SOUTHEASTWARDS AND DEEPENING.
EXPECTED 990 NEAR 53S/67E THE 25 AT 12 UTC.
- NEW LOW AT END EXPECTED NEAR 54S/47E.
- HIGH 1037 NEAR 41S/73E, SLOWLY MOVING EASTWARDS.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/24 AT 1800UTC TO 26/07/25
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN OR SHOWERS, BECOMING LOCALLY THUNDERY IN FAR NORTHWEST.
WIND: NORTH 5 OR 6, BECOMING CLOCKWISE AT TIMES 7 IN FAR NORTHEAST AT
END. GUSTS.
SEA: MODERATE OR ROUGH, BECOMING ROUGH OR VERY ROUGH LATER IN
SOUTHWEST IN SW SWELL.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: EAST 4 OR 5, AT TIMES 6, BACKING SOON NORTH 3 OR 4 IN WEST; BUT
ANTICLOCKWISE 3 OR 4 IN FAR SOUTH.
SEA: MODERATE OR ROUGH.
VISI: MODERATE IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN OR SHOWERS.
WIND: NORTHWEST 6 OR 7, INCREASING AT TIMES 8 AT END, BUT
OCCASIONALLY CLOCKWISE 6 OR 7 IN SOUTHWEST. SEVERE GUSTS.
SEA: ROUGH OR VERY ROUGH, CROSSED IN SW SWELL INCREASING 4 OR 5 M,
BECOMING HIGH IN SOUTH AT END.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SHOWERS.
WIND : ANTICLOCKWISE 3 OR 4 OVER NORTHERN, NW 5 OR 6 OVER SOUTHERN,
LOCALLY 7 OVER FAR SOUTHERN. GUSTS.
SEA: ROUGH TO VERY ROUGH. SW SWELL 3 OR 4METERS.
VISI: POOR IN PRECIPITATION.=