WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19th OF JULY 2026 AT 13:30 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 192200 TO 202200 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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1. MARION FORTIES EAST: N to NW 35 at times in places except in the
north-east.
SYNOPTIC CHART 12:00Z
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High 1030 hPa 30s22w, High 1021 hPa 44s40e, High 1016 hPa 20s39e
Low 1005 hPa 39s26e, Low 982 hPa 50s09e
1. Cold Front: 38s10w 45s02w 49s09w into 49s04w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SW 05 to 10 in the east, otherwise SE to S 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the north-east, otherwise S to SE 10 to
20, reaching 25 in some places over the central and north-
western parts.
VIS : Good but moderate in showers and thundershowers in the south-
east.
SEA STATE: 3.0m in the central and north-western parts, with S to SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south-west, otherwise S to SE 05 to
15.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the extreme north until mid-period,
otherwise NW to W 15 to 25, reaching 30 in the extreme south-
west until mid-period.
VIS : Good but moderate in showers and rain over the southern half. SEA STATE: 3.0 to 4.0m in the southern half spreading to the north by
mid-period, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anti-cyclonic 05 to 15 in the north, otherwise W 15 to 25
reaching 30 in the extreme south and south-east until mid-
period.
VIS : Good but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m in the south, reaching 4.5m at times with W to SW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 in the east, but anti-cyclonic 05 to 15 in
the west, otherwise NE to N 15 to 25 reaching 30 at times in
the central south.
VIS : Good but moderate to poor in showers and thundershowers in
places over the central parts and the extreme north.
SEA STATE: 3.5 to 4.5m, with S to SW swell over the eastern half
otherwise SE to E.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the east but S to SW 20 to 30 in the
extreme south-west, otherwise W to SW 15 to 25 becoming S to
SW 10 to 20.
VIS : Good but moderate to poor in showers and thundershowers over
the central parts from the mid-period
SEA STATE: 3.0 to 4.0m, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NW 05 to 15 in the south-west, otherwise variable 05 to
10.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10.
VIS : Good.
SEA STATE: 3.0m in the south, with a SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the north-east, otherwise N to NW 15
to 25 reaching 30 to 35 in the south-west spreading to the
south-east from mid-period.
VIS : Good but moderate in showers and rain in the south-west
spreading to the north-west by the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-west from mid-
period, with S to SE swell but NW swell in the south-west
spreading to the south-east by mid-period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/19 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
- Gale continuing and expected over WAM, AMS and KER
- Severe gale continuing over CRO.
PART 2: GENERAL SYNOPSIS, 26/07/19 AT 0000UTC
- Low 985 near 39S/55E moving SE, expected near 42S/63E the 20 at 06 UTC.
- Cold front axis 40S/55E, 39S/62E, 30S/56E moving eastward.
- Warm front axis 42S/55E, 42S/64E, 39S/76E moving ESE.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/19 at 0600UTC to 26/07/20 at 0600UTC
WAM (30S/40S, 50E/65E)
Rain and showers.
WIND: Clockwise 5 to 6 over northern area, 6 to 7 at times 8, with severe gusts over southern area.
SEA: very rough or high. Southwest swell from 3 to 5 m.
VIS: poor or very poor in precipitation.
AMS (30S/40S, 65E/80E)
Frontal rain and showers.
WIND: Northerly 4 to 6 increasing 6 to 7 locally 8 in far southwestern area at end.
SEA: moderate or rough becoming very rough or high over western at end. Arrival of westerly swell from 3 to 4 m.
VIS: poor or very poor in precipitation.
CRO (40S/50S, 50E/65E)
Heavy rain and thundery showers over northern.
WIND:
Northern half: Clockwise 7 or 8, at times 9. Severe gusts.
Southern half: Southeast 4 to 6 at times 7 from south to north increasing 5 to 7 at times 8 near the low soon.
SEA: Rough or very rough but very rough or high in the north. Southwesterly swell in the southern area 3 m to 3.50 m but clockwise swell 3 to 4 m elsewhere.
VIS: poor or very poor in precipitation.
KER (40S/50S, 65E/80E)
Rain and showers.
WIND : Over far Southeastern, W 5 to 6 at first but over Northwestern, E 5 to 6 locally 7 increasing 6 to 7 temporarily 8 reaching the South ahead the front then N 6 to 7 locally 8 with severe gusts behind the front at end.
SEA: rough to very rough locally high over far Northwestern area at end. Southwesterly swell 3 to 4 m in the south then Northwesterly swell 3 to 4 m over Northwestern area at end.
VIS: poor or very poor in precipitation.