WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
14TH OF JULY 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 141000 TO 151000 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: E to SE 35 in the west towards mid-period.
2. MARION FORTIES EAST: NW 35 in the west from mid-period.
SYNOPTIC CHART 06:00Z
=====================
High 1025 hPa 27s02e, High 1038 hPa 40s45e
Low 979 hPa 57s17e, Low 1018 hPa 25s41e
1. Cold Front: 35s03e 40s14e 45s19e 50s21e into 57s17e
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 10 to 20, but variable 05 to 10 in the east.
VIS : Good.
SEA STATE: 3.0m in the south, with S to SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the south-east until mid-period, otherwise E
to SE 10 to 20 but NW 15 to 25 in the south-west, spreading to
the south by the end of the period.
VIS : Good, becoming moderate to poor in showers and thundershowers in
the south-west towards mid-period.
SEA STATE: 3.0 to 3.5m in the south, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south-west, otherwise S to SE 10 to 20
reaching 25 to 30 in the north but in the south-west towards mid-
period.
VIS : Good.
SEA STATE: 3.0m in the north, spreading to the south by the end of the
period, with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Variable 05 to 10 in the south-east at first, otherwise NW 10 to
20 reaching 25 to 30 in the north-west but E to SE 20 to 30 in
the south-west, reaching 35 in the west towards mid-period.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in the south-east at first, but
in the west towards the end of the period, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 05 to 15 in the north-east, otherwise W to SW 10 to 20
reaching 25 to 30 in the south, but NW 10 to 20 in the extreme
east, reaching 25 in the south-west towards the end of the
period.
VIS : Good but moderate in showers and rain in the south-east until
mid-period but in the south-west towards the end of the period.
SEA STATE: 3.0 to 3.5m in the southern and western halves, reaching 4.0 to
5.0m in the south, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 15 to 25 reaching 30 over the central parts, but W to NW
10 to 20 in the west, reaching 25 to 30 in the south-west towards
mid-period. It will become SW 15 to 25 in the west towards the
end of the period.
VIS : Moderate in showers and thundershowers in places.
SEA STATE: 3.0 to 4.0m in the central parts with NE to E swell, reaching 4.5
to 5.0m in the south-west towards the end of the period, with SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the north, otherwise E to SE 20 to 30 but S
to SW 05 to 15 in the west.
VIS : Moderate to poor in showers and thundershowers, but good in the
south and west.
SEA STATE: 3.0 to 4.0m reaching 4.5m in the south, with E to SE swell.
MOZAMBIQUE CHANNEL:
WIND : N to NW 15 to 25 in the south-east, otherwise S to SW 05 to 15
reaching 20 to 25 in the south-west.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S to SE 05 to 15 reaching 20 to 25 in the north-west until mid-
period, but E to NE 15 to 25 in the south.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m in the south, with SE to E swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north-east until mid-period,
otherwise NW 20 to 30 reaching 35 in the west from mid-period.
VIS : Good, becoming moderate to poor in showers and rain in the west
from mid-period.
SEA STATE: 3.0 to 4.0m in the south and west with W to SW swell, reaching
4.5 to 5.5m in the west towards the end of the period, with NW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/07/14 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER CRO.
- GALE OVER KER AND SEVERE GALE EXPECTED.
PART 2: GENERAL SYNOPSIS, 2026/07/14 AT 0000UTC
- HIGH 1039 HPA NEAR 41S/43E MOVING NORTH-EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 2026/07/14 AT 0600UTC TO 2026/07/15 AT 0600UTC
WAM (30S/40S, 50E/65E)
FEW SHOWERS.
WIND : ANTICLOCKWISE 3 TO 5, LOCALLY 6 WITH GUSTS OVER FAR NORTHWESTERN AT
END.
SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH AT FIRST OVER FAR SOUTHEASTERN.
SW SWELL 3 TO 4 M ABATING.
VIS : GOOD.
AMS (30S/40S, 65E/80E)
FEW SHOWERS.
WIND : OVER NORTHERN : SW 4 TO 6 WITH GUSTS FROM WEST TO EAST, DECREASING 3
TO 5 LATER. OVER SOUTHERN : SW 5 OR 6, LOCALLY 7 OVER FAR SOUTHERN,
DECREASING 4 OR 5 OVER WESTERN LATER. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH, BECOMING LOCALLY HIGH OVER FAR SOUTHEASTERN
LATER. SW SWELL 3 OR 4 M, THEN 4 OR 5 M AT END.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
FEW SHOWERS.
WIND : OVER NORTHERN : SW 4 TO 6 FROM WEST TO EAST, LOCALLY 7 OVER FAR
EASTERN, GRADUALLY DECREASING 3 OR 4 AT END. OVER SOUTHERN : W OR SW
6 OR 7, AT TIMES 8 OVER FAR SOUTHEASTERN AT FIRST, GRADUALLY
DECREASING 4 TO 6 FROM WEST TO EAST AT END. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER FAR SOUTHEASTERN. SW SWELL 3
TO 5 M.
VIS : GOOD.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS.
WIND : SW 6 OR 7, LOCALLY 8 OVER WESTERN AT FIRST, GRADUALLY INCREASING 7 OR
8 SOON, LOCALLY 9 OVER FAR SOUTHERN LATER, DECREASING 5 OR 6 OVER
WESTERN AT END. VIOLENT GUSTS.
SEA : VERY ROUGH TO HIGH, LOCALLY VERY HIGH OVER FAR SOUTHEASTERN AT END.
SW SWELL 4 TO 6 M AT END.
VIS : POOR WITH PRECIPITATION.