WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
14th OF AUGUST 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: W to SW 35 in the west, but NW 35 to 40 over the central
parts and the south-east.
2. CAPE WEST: N to NW 35 in the south-west at first, spreading to
the central south by mid-period.
3. DURBAN EAST: E to SE 35 in the central north at first.
SYNOPTIC CHART 06:00Z
=====================
High 1040 hPa 41s40e.
Low 970 hPa 48s12w; Low 965 hPa 68s01w
1. Cold Front: 27s26w 36s13w 49s08w 44s20w 47s20w into 48s12w.
2. Cold front: 52s09e 61s12e 67s07e into 68s01w
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15, variable 05 to 10 in the south.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15 but variable 05 to 10 in the north.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the north, otherwise N to NW 15 to 25
over the central parts, reaching 30 in the south.
VIS : Good, but moderate to poor in showers and rain in the south-
west towards the end of the period.
SEA STATE: 3.0 to 4.0m , reaching 4.5 to 5.5m in the south-west, with S
to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : SE 05 to 15 in the north-east otherwise variable 05 to 15 but
W to NW 05 to 15 in the south at first.
VIS : Good.
SEA STATE: 3.0m in the extreme south-west, with SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 25 to 35 in the west otherwise NW 25 to 35 reaching 40
over the central parts and the south-east
VIS : Moderate in showers in the east at first, otherwise good,
becoming moderate to poor in showers and thundershowers in the
west from mid-period.
SEA STATE: 4.0 to 5.0m, but 5.0 to 5.5m in the south, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 in the north-east, otherwise N to NW 15 to
25 reaching 30 to 35 in the south-west at first, spreading to
the central south by mid-period.
VIS : Good but moderate in rain and showers in places in the south-
west.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the west towards the end
of the period, with W to SW.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anticyclonic 05 to 15 in the south-east at first, otherwise E
to SE 15 to 25, but NW 20 to 30 in the west where it will
become W to NW 10 to 20 from the mid-period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-west with NE swell, and the extreme
eastern parts, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25, reaching 30 to 35 in the central north at
first, but NE 15 to 25 in the extreme south-west.
VIS : Good but moderate in showers and thundershowers in places over
the central parts and the north-east.
SEA STATE: 3.5 to 4.0m, reaching 4.5 to 5.5m over the central and north-
eastern parts with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : SE 05 to 15 in the south, otherwise S to SW 15 to 25, but
variable 05 in the north-east.
VIS : Good, but moderate in showers over the south-west.
SEA STATE: 3.0 to 3.5m except in the extreme north-west and the south-
east, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 in the north but NE 05 to 10 in the south.
VIS : Good, but moderate in showers and thundershowers in the
extreme south.
SEA STATE: 3.0m in the south, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the northern, otherwise W to NW 15 to
25, but SW 15 to 25 in the south-east at first.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south, with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/08/14 AT 0600UTC
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 CRO, AMS AND KER.
PART 2: GENERAL SYNOPSIS, 26/08/14 AT 0000UTC
- COLD FRONT OVER THE NORTHEAST AMS, LEAVING THE AREA SOON.
- HIGH 1044 HPA NEAR 42S/38E, WITH A RIDGE EXTENDING NORTHEAST, EXPECTED
1037 HPA NEAR 39S/47E BY THE END.
PART 3: FORECAST FOR 24 HOURS FROM 26/08/14 AT 0600UTC TO 26/08/15 AT
0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS.
WIND: SOUTHERLY TO SOUTHEAST 4/5 IN THE WESTERN
HALF AND SOUTHERLY TO SOUTHWEST 4 TO 7 FROM NORTH TO SOUTH IN THE
EASTERN HALF.
SEA: VERY ROUGH, HIGH IN THE SOUTHEAST AND ROUGH IN THE
NORTH AT FIRST. LONG SSW SWELL, 4 TO 6 METERS.
VIS: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FREQUENT FRONTAL SHOWERS IN THE EAST.
WIND: NORTHERN HALF: SOUTHWEST 5/6, INCREASING 7 IN THE SOUTHEAST
LATER.SOUTHERN HALF: SOUTHWEST 6/7, INCREASING 7/8 LATER, REACHING 9
LOCALLY AT END.
SEA : ROUGH TO HIGH FROM NORTH TO SOUTH, BECOMING HIGH TO VERY HIGH IN THE
SOUTH.LONG SOUTH-SOUTHWEST SWELL 4 TO 6 METERS.
VIS : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS.
WIND: WESTERN HALF: SOUTH TO SOUTHWEST 6/7, REACHING LOCALLY 8 IN THE EAST,
DECREASING LATER 4/5, LOCALLY 6 IN THE SOUTH.EASTERN HALF: SOUTHWEST
7/8 WITH STRONG GUSTS, INCREASING SOON 8/9, THEN DECREASING 6/7,
LOCALLY 8 IN THE SOUTHEAST, AT END.
SEA : VERY ROUGH TO HIGH, BUT VERY HIGH IN THE SOUTHEAST. LONG
SOUTHWESTERLY SWELL 4 TO 7 METERS.
VIS : VERY POOR.
KER (40S/50S, 65E/80E)
FRONTALES SHOWERS., SNOW IN THE SOUTH.
WIND: SOUTHWEST 7/8, INCREASING SOON 8/9 WITH STRONG GUSTS, BUT SOUTHWEST
6/7 IN THE FAR SOUTHEAST.
SEA : HIGH, SOON BECOMING VERY HIGH IN THE NORTHWESTER HALF. LONG
SOUTHWESTERLY SWELL 4 TO 7 METERS.
VIS : VERY POOR.=