WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII, EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19th OF JULY 2026 AT 08:30 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
NOTE: WX OBSERVATIONS.
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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 191000 TO 201000 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 06:00Z
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High 1028 hPa 31s21w, High 1024 hPa 44s38e, High 1022 hPa 19s47e
Low 1005 hPa 40s23e
1. Cold Front: 36s20w 40s16w 45s12w 48s12w into 48s13w
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 in the east, but S 15 to 25 in the west
becoming anti-cyclonic from mid-period, otherwise NE to E 15
to 25 reaching 30 at times in the central south.
VIS : Good but moderate to poor in showers and thundershowers in
places except the north, clearing over the east from mid-
period.
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 becoming S to SW 20 to 30 in the
extreme south-west towards the end of the period, otherwise W
to SW 15 to 25 becoming S to SW 15 to 20 in the south-east
towards the end of the period.
VIS : Good but moderate to poor in showers and thundershowers
in the south-central, spreading to the south-east from mid-
period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.5m in the south-east until mid-
period, 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 from mid-period, 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 at times in places.
VIS : Moderate to poor in showers and thundershowers in the
north-east at first and over the south-west towards the end of
the period, otherwise good.
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.
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.