WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
16TH OF JUNE 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:
=======
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. TRADES : S to SE 35 in the south-east at first, as well as north-
east until mid-period.
2. TRISTAN : N to NW 35 in the west by the end of the period.
3. CAPE WEST : S to SE 35 in the north-east at first.
4. CAPE EAST: W to SW 35 in the east and southern parts until mid-
period.
5. MARION FORTIES EAST: W to SW 35 in the north at first.
SYNOPTIC CHART 12:00Z
=====================
High 1032 hPa 34s01w, High 1028 hPa 33s53e
Low 1010 hPa 39s44e, Low 983 hPa 47s01e
1. Cold Front: 30s42e 34s45e 38s46e into 39s44e.
2. Cold Front: 30s22w 34s17w 38s12w 42s05w into 47s01e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 25.
VIS : Good.
SEA STATE: 3.0 to 4.0m, with SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : SW 05 to 15 in the east, otherwise S to SE 10 to 20, reaching
25 to 30 in the south and south-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m central, west and southern parts, with SE swell.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NE 15 to 25 in the west and south-west, otherwise E to SE
15 to 25, reaching 30 in places in the north-east at times.
VIS : Good but moderate to poor in showers and thundershowers in the
extreme south-west.
SEA STATE: 3.0 to 4.0m, except in the south-east, with E to SE swell, but
NW in the south-west.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 15 to 25, reaching 30 in the south and northern parts,
but 35 in the south-east at first, as well as north-east until
mid-period.
VIS : Good, but moderate in thundershowers in the south-east.
SEA STATE: 3.0 to 4.0m in the south-east, central and northern parts,
with SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the east, otherwise N to NW 15
to 25, reaching 30 in places in the central and southern parts
at first, but 35 in the west by the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the west and south, spreading to the south-west by the end of
the period.
SEA STATE: 3.0 to 4.0m in the south and west, reaching 4.5m in the south-
west until mid-period, with N to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : W to NW 15 to 25 in the south and south-west, but anti-
cyclonic 05 to 15 in the west, otherwise S to SE 15 to 25,
reaching 30 to 35 in the north-east at first.
VIS : Good, but moderate in showers and thundershowers in places in
the north-east, but moderate in showers and rain in the
extreme south-west.
SEA STATE: 3.0 to 4.0m in the south, north and north-east, with SE swell,
but SW in the south.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15 in the west, otherwise W to SW 15 to
25, reaching 30 to 35 in the east and southern parts until
mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in
the east at first. It will become moderate in showers and rain
in the south from the morning, spreading to the east by the
end of the period.
SEA STATE: 3.0 to 4.0m, in the east and southern parts, reaching 4.5 to
5.0m in the east at first, as well as southern parts from the
morning, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 05 to 15 in the west, but E to NE 05 to 15 in
the east at first, otherwise W to SW 10 to 20, reaching 25 to
30 in the south-east.
VIS : Good, but moderate to poor in showers and thundershowers in
the east and south-east, but moderate in showers and rain in
the north-west, spreading to the south-west by the end of the
period.
SEA STATE: 3.0 to 3.5m in the south-west, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 05 to 15, reaching 20 to 25 in the south-east.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise E to SE 10 to 20,
reaching 25 to 30 in the extreme north-west.
VIS : Moderate in light showers and rain in places.
SEA STATE: 3.0m in the extreme south-east and north-west at first, with S
to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25, reaching 30 in places until late afternoon,
but 35 in the north at first.
VIS : Good, but moderate in showers and rain in the southern half,
spreading to the north from the morning.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 6.5m in places in the west and
southern half, spreading to the north from mid-period, while
subsiding in the south-west, with SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/16 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE RUNNING OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/06/16 AT 1200UTC
- LOW 1010 NEAR 38S/43E, MOVING EASTWARD.
- DISTURBED WESTERLY FLOW WITH A TROUGH OVER WAM AND CRO ET END.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/16 AT 1800UTC TO 26/06/17
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN, SHOWERS AND SQUALLS.
WIND: INCREASING NORTHERLY 6/7 THEN BACKING SW 6/7.
SEA : ROUGH TO VERY ROUGH BY SW SWELL 2 TO 4 M.
VIS : POOR TO VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS AND SQUALLS.
WIND: ANTICLOCKWISE 3/5.
SEA : ROUGH LOCALLY VERY ROUGH AT FIRST BY SW SWELL 3 TO 5 M
DECREASING.
VIS : POOR TO VERY POOR IN PRECIPITATIONS.
CRO (40S/50S, 50E/65E)
RAIN OR SNOW, SHOWERS AND SQUALLS.
WIND: WESTERLY 7/8 DECREASING 6/7 AND BACKING SOUTHERLY 5/6 AT END.
SEA : VERY ROUGH TO HIGH. SW SWELL 3 TO 5 M AND CROSS SEA.
VIS : POOR TO VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SNOW OVER SOUTHERN.
WIND: WESTERLY 6/7 LOCALLY 8 OVER SOUTHERN.
SEA : VERY ROUGH TO HIGH. SW SWELL 3 TO 5 M LOCALLY 5 TO 6 M OVER
SOUTHERN AND CROSS SEA.
VIS : POOR OR VERY POOR IN PRECIPITATION.