WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
16th OF JULY 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 162200 TO 172200 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: Cyclonic 35 to 45 over the south-central parts, spreading
to the east towards mid-period.
2. MARION FORTIES EAST: Cyclonic 35 to 45 in places over the north
after mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1025 hPa 45s02w, High 1027 hPa 31s10e.
1. Cold Front: 15s20w 19s18w 24s14w into 26s13w.
2. Cold Front: 39s09e 38s12e 38s17e 40s18e into 41s24e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SW 05 to 15 in the east, otherwise S to SE 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NW 05 to 15 in the central parts drifting to the south-
east towards mid-period, otherwise S to SE 15 to 25 but
variable 05 to 15 in the north-east.
VIS : Good but moderate to poor in showers and thundershowers
in the north-west across the central to the south-central
parts, clearing towards the end of the period.
SEA STATE: 3.0 to 3.5m in the west and southern parts, with S to SW
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, but variable 05 to 10 in the south-west,
spreading in the south towards the end of the period.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 15 to 25 in the east, spreading to the extreme east
towards the end of the period , otherwise W to SW 10 to 20,
reaching 25 in some places over the central towards mid-
period.
VIS : Good but moderate to poor in showers and thundershowers in the
east in the first-half of the period.
SEA STATE: 3.0 to 3.5m except in the central and west, with NW swell in
the east, otherwise S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the northern parts, otherwise
W to NW 15 to 25, but cyclonic 15 to 25 in the south-west,
spreading to the south-east towards mid-period. it will become
S to SE 10 to 20 in the south-west after mid-period.
VIS : Good but moderate in showers and rain in the west and southern
parts.
SEA STATE: 3.0 to 4.0m, except in the northern parts, with W to NW in the
central and western parts otherwise SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 in the west, but cyclonic 35 to 45 over the
south-central parts, spreading to the east towards mid-period.
It will become cyclonic 15 to 25 in the south-west but W to NW
15 to 25 in the north-west by the end of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
southern-half, spreading to the north-east by the end of the
period.
SEA STATE: 3.5 to 4.5m in the west and central parts, reaching 5.0 to
6.0m in the central towards mid-period but 6.5 to 9.5m in the
south-east towards the end of the period , with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to SE 10 to 20 in the east but N to NE 05 to 15 in the
south-east, otherwise S to SW 05 to 15 becoming anticyclonic
05 to 15 in the north-west by the end of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the east until mid-period becoming 3.0m in the
south from mid-period, with E to SE swell.
MOZAMBIQUE CHANNEL:
WIND : SE 10 to 15 in the south and central, spreading to the north
towards mid-period. It will become variable 05 to 10 in the
south-west towards the end of the period.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the central and north until mid-period,
otherwise S to SE 05 to 15.
VIS : Good but moderate in showers and thundershowers over the
central parts and southern parts at first.
SEA STATE: 3.0m in the south at first, with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 in the south-west until mid-period, otherwise
cyclonic 15 to 25, reaching 35 to 45 in places over the north
after mid-period. it will become S to SE 10 to 20 in the
southern-half and central after mid-period, where it will
reach 25 to 30 towards the end of the period.
VIS : Good but moderate to poor in showers and thundershowers in the
in the north-west, spreading to the east towards mid-period.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 6.0m over the southern-half until
mid-period and over the north-west towards mid-period, 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)
26/07/16 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Locally gale over CRO at first.
PART 2: GENERAL SYNOPSIS, 26/07/16 AT 1200UTC
- High 1028 hPa near 34S/70E moving eastward 15/20 kt.
- Cold front axis 36S/48E, 50S/59E, moving eastward 15/20 kt.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/16 at 1800UTC to 26/07/17 at 1800UTC
WAM (30S/40S, 50E/65E)
Frontal rain and showers.
WIND : Over northern : NE or N 4 or 5, becoming NW 3 or 4 from west soon. Over southern : NW 5 or 6 with gusts ahead the front backing S 2 to 4 behind the front, then SE 2 or 3.
SEA: moderate to rough. SSW swell 2 to 3 meters, decreasing.
VISI: poor with precipitation.
AMS (30S/40S, 65E/80E)
Few showers.
WIND : Over northern : anticlockwise 2 to 4, becoming NE or N 3 or 4 over western later. Over Southern : anticlockwise 2 to 4, increasing NW 5 or 6 with gusts from west soon.
SEA: rough to locally very rough over eastern, becoming moderate or rough later. SSW swell 3 to 4 meters, decreasing.
VISI: good.
CRO (40S/50S, 50E/65E)
Frontal rain and showers, becoming less frequent later.
WIND: NW 6 or 7 ahead the front, at times 8 in the front, backing W 5 or 6, at times 7 behind, decreasing S 3 or 4 over western at end. Severe gusts.
SEA: rough to very rough from north to south. W swell 3 or 4 meters over southern.
VISI: poor with precipitation.
KER (40S/50S, 65E/80E)
Frontal rain and showers by southwestern area soon.
WIND: NW 5 or 6 but anticlockwise 2 to 4 over northeastern at first, increasing 6 or 7 ahead the front, backing W 5 to 6 behind the front later. Severe gusts.
SEA: rough to very rough. SW then W swell 2 to 4 meters.
VISI: poor with precipitation.