WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
11th 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 111000 TO 121000 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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SYNOPTIC CHART 06:00Z
=====================
High 1031 hPa 44s13e; Low 990 hPa 40s28w; Low 992 hPa 47s18w;
Low 1000 hPa 40s7w
1. Cold Front: 28s12w 35s02w 40s03w 41s07w into 40s07w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20, but variable 05 in the north-east.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15 but variable 05 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : W to NW 15 to 25 in the south-west, otherwise variable 05 to 10,
but E to SE 10 to 20 in the north-east.
VIS : Good but moderate in a band of showers and thundershowers in the
south.
SEA STATE: 3.0m from the end of the period, with W to NW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 but variable 05 to 10 in the south-west.
VIS : Good, but moderate in rain and showers in the extreme south-west
by the end of the period.
TRISTAN (30S/40S, 00E/20W):
WIND : W to NW 10 to 20 in the west reaching 25 to 35 in the south-west,
but variable 05 to 10 in the north-east.
VIS : Moderate to poor in showers and thundershowers in the west,
Spreading to the south-east by the end of the period.
SEA STATE: 3.0 to 4.0m in the west, reaching 4.5 to 5.5m, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 in the north, otherwise E to NE 15 to 25 in the south-
west, but SE 10 to 20.
VIS : Good in places in the north-east, otherwise moderate in showers.
SEA STATE: 3.0 to 3.5m in the extreme north-east and south-west, with SE
swell, but in the NW in the south-west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SW 10 to 20 in the south-east, reaching 25 to 30 in the
extreme south-east at first, otherwise E to SE 05 to 15, but
variable 05 to 10 in the south-west.
VIS : Moderate in showers and rain in places, except the south-east.
SEA STATE: 3.0 to 4.0m over the central parts, reaching 4.5 to 5.5m in the
south-east, with SW to S swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 10 to 20 in the east otherwise, S to SE 10 to 20, reaching
25 in the south, but variable 05 to 10 in the north-east.
VIS : Good in places in the south, otherwise moderate in showers and
rain.
SEA STATE: 3.0 to 4.0m in places in the east, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15 in the east and northern parts, otherwise
variable 05 to 10.
VIS : Good but moderate in showers and rain in places over the
central parts at first.
SEA STATE: 2.0 to 3.0m in the extreme south, with SW swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : cyclonic 05 to 15 in the west, but E to SE 15 to 25 in the north-
east, otherwise NE to N to 05 to 15.
VIS : Good in the south at first, otherwise moderate in showers and
rain, but poor over the central parts.
SEA STATE: 3.0 to 3.5m in the south, spreading northwards from mid-period,
with S to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25, reaching 30 to 35 in the north-east at first,
become anticyclonic 05 to 15 in the extreme north-west by the end
of the period.
VIS : Good in the north-west, otherwise moderate in showers and rain but
poor in snow-showers in the south-east.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 5.5m in the extreme east, 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)
26/07/11 AT 0400UTC
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 OVER KER.
- GALE FORCE 8 OVER CRO.
PART 2: GENERAL SYNOPSIS, 26/07/11 AT 0000UTC
- LOW 999 HPA NEAR 46S/44E EXPECTED 992 HPA NEAR 45S/68E AT END.
- LOW 995 HPA NEAR 44S/54E, EXPECTED 970 HPA NEAR 51S/69E AT 18UTC.
- HIGH 1032 HPA OVER NORTH-EASTERN AMS AT FIRST.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/11 AT 0600UTC TO 26/07/12 AT
0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS FRONTAL OVER SOUTHERN.
WIND: ANTICLOCKWISE 2 TO 4 OVER NORTHERN. ELSEWHERE, WEST TO
NORTH-WEST 5 TO 6, INCREASING 7 OVER FAR SOUTHERN.
SEA : ROUGH TO VERY ROUGH. SOUTH-WESTERLY SWELL 3 TO 5 M FROM NORTH
TO SOUTH.
VIS : POOR TO VERY POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS OVER SOUTHERN.
WIND : ANTICLOCKWISE 3 TO 4 OVER NORTH-EASTERN. ELSEWHERE,
NORTH-WESTERLY 5 TO 6, LOCALLY 7 OVER SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH. SOUTH-WESTERLY SWELL 3 TO 4 M.
VIS : POOR UNDER PRECIPITATION.
CRO (40S/50S, 50E/65E)
SHOWERS AND SQUALLS.
WIND : WESTERLY TO NORTH-WEST 5 TO 7, INCREASING LOCALLY 8. STRONG
GUSTS.
SEA : VERY ROUGH TO HIGH. WESTERLY SWELL 4 TO 6 M.
VIS : VERY POOR UNDER PRECIPITATION.
KER (40S/50S, 65E/80E)
SHOWERS AND SQUALLS.
WIND : CLOCKWISE 6 TO 7, INCREASING 8 TO 9 NEAR THE CENTRE. STRONG
GUSTS.
SEA : VERY ROUGH TO ROUGH. WESTERLY SWELL 4 TO 6 M.
VIS : VERY POOR DURING PRECIPITATION.=