WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
14th OF SEPTEMBER 2026 AT 17:00 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 141220 TO 152200 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 WEST: NW to W 35 in the south-east.
2. CAPE EAST: N to NE, reaching 35 to 40 over the central and southern
parts, but W to NW 35 in the west from mid-period.
3. DURBAN EAST: E to NE 35 in the northern parts (south of Madagascar)
and the south-western parts.
4. MARION FORTIES EAST: N to NW 35 to 40 over the western half,
spreading to the eastern parts by mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1036 hPa 37s43e, High 1020 hPa 21s01w
Low 952 hPa 57s18e, Low 1008 hPa 34s23e
1. Cold Front: 27s15w 33s02w 38s07e 42s12e 49s20e into 57s18e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : S to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 10 over the northern half, otherwise W to
NW 15 to 25, but S to SE 15 to 25 in the south and south-east.
VIS : Good but moderate in showers and rain in the south.
SEA STATE: 3.0m over the southern half, with SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 over the central parts, otherwise S to SE 05
to 15 reaching 20 to 25 in the north-east, but W to NW 15 to
25 in the southern parts.
VIS : Good but moderate to poor in showers and rain in the south-
western parts.
SEA STATE: 3.0m in places in the south-western parts, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : S to SW 15 to 25 in the southern parts where it will reach 30
at times, becoming anticyclonic 05 to 10 over the central
parts, but S to SE 05 to 15 in the north-east.
VIS : Moderate in rain and showers except in the north-west where it
will be good.
SEA STATE: 3.0 to 4.0m reaching 4.5m over the south-eastern parts, with W
to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to W 15 to 25 in the north-east, reaching 30 to 35 in the
south-east, otherwise SW to S 20 to 30.
VIS : Good but moderate to poor in showers and thundershowers across
the north-west central parts and the south-east, spreading to
the north-east towards the end of the period.
SEA STATE: 3.0 to 4.0m, except in the north-east, reaching 4.5 to 5.0m in
the southern parts, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 20 to 30, reaching 35 to 40 over the central and
southern parts, but W to NW 15 to 25 in the west, reaching
30 to 35 in the west from mid-period.
VIS : Moderate in showers and rain over the west and the central
parts.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in places in the central
south and the west, with E to NE swell, but NW in the west and
central south.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to NE 15 to 25, reaching 30 to 35 in the northern parts
(south of Madagascar) and the south-western parts.
VIS : Good but moderate in showers and rain in the south-west.
SEA STATE: 3.5 to 4.5m, with E to NE swell, but S to SW in the east.
MOZAMBIQUE CHANNEL:
WIND : E to SE 10 to 20 becoming NE 10 to 15 during the second half
of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east, with SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : SE 15 to 25, reaching 30 in the north-west at times, but E 15
to 25 in the south-east.
VIS : Moderate in showers and rain in places.
SEA STATE: 3.0 to 4.0m, with E to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 to 40 over the western half,
spreading to the eastern parts by mid-period, while becoming
W to SW 10 to 15 over the west and south-western parts.
VIS : Moderate to poor in showers and rain, except in the north-
east.
SEA STATE: 4.0 to 6.0m, 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)
26/09/14 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE OVER WAM, AMS, CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/09/14 AT 1200UTC
- BUILDING HIGH 1036 HPA NEAR 37S/44E, STEADILY MOVING EASTWARD.-
COLD FRONT (CF) OVER FAR EASTERN AMS AND KER, DRIFTING AWAY THE AREA
BY EAST AT FIRST.- ACTIVE POST COLD FRONT CONDITIONS BEHIND CF.-
WAVING FRONT OVER SOUTH-WESTERN CRO LATER.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/14 AT 1800UTC TO 26/09/15
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS OVER EASTERN, BECOMING GRADUALLY MORE SCATTERED.WIND: EASTERN
HALF: SW 6/7 AT TIMES 8 WITH SEVERE GUSTS, DECREASING S 5/6 AT TIMES
6.WESTERN HALF: BECOMING ANTICLOCKWISE 3/4 AT TIMES 5.SEA: VERY ROUGH
TO HIGH FROM WEST TO EAST, BECOMING ROUGH OVER FAR WESTERN LATER.
LONG SW SWELL 5 TO 7M ABATING 3 TO 5M LATER.VISI: POOR IN
PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS AT TIMES THUNDERY, BECOMING MORE SCATTERED OVER WESTERN
LATER, BUT FRONTAL RAIN, SHOWERS AND SQUALLS OVER FAR EASTERN AT
FIRST.WIND: INCREASING SW 6/7 AT TIMES 8. SEVERE GUSTS.SEA: VERY
ROUGH TO HIGH. LONG SW SWELL SPREADING FROM WEST INCREASING 5 TO
7M.VISI: POOR OR VERY POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS, BUT SHOWERS OVER FAR EASTERN AT FIRST. FRONTAL
RAIN AND SHOWERS OVER SOUTH-WESTERN LATER.WIND: SW 5/6 AT TIMES 7,
LOCALLY 8 OVER NORTHERN AT FIRST, VEERING NW 5/6 AT TIMES 7 FROM WEST
LATER. GUSTS.SEA: VERY ROUGH BUT HIGH OVER NORTH-EASTERN, BECOMING
GRADUALLY ROUGH OVER NORTH-WESTERN. LONG SW SWELL 5 TO 7M ABATING
GRADUALLY 3 TO 5M.VISI: POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SHOWERS AT TIMES THUNDERY, BECOMING MORE SCATTERED OVER WESTERN
LATER, BUT FRONTAL RAIN, SHOWERS AND SQUALLS OVER FAR EASTERN AT
FIRST.WIND: SW 6/7 AT TIMES 8 WITH SEVERE GUSTS, DECREASING 5/6 AT
TIMES 7 FROM WEST LATER.SEA: VERY ROUGH TO HIGH. LONG W SWELL
SPREADING FROM WEST AND INCREASING 4 TO 6M, LOCALLY 7M OVER FAR
NORTH-WESTERN..VISI: POOR OR VERY POOR IN PRECIPITATION.=