WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF JUNE 2026 AT 08:30 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 101000 TO 111000 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: Cyclonic 35 to 45 in the south-west at first, but NW to N
35 in places over the southern half.
2. CAPE EAST: SE to S 35 TO 40 in the extreme north-east by the end of the
period.
3. DURBAN EAST: Cyclonic 35 to 40 in the south-east.
4. MARION FORTIES EAST: W to NW 35 in the central parts, spreading to the
south-east towards mid-period until towards the
end of the period.
SYNOPTIC CHART 06:00Z
=====================
High 1025 hPa 33s33e
Low 1001 hPa 44s08e, Low 1007 hPa 29s50e
1. Cold Front: 29s12w 33s04w 40s03w into 38s06w.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but variable 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the center, but S to SW 10 to 15 in
the south-east, otherwise SE to E 10 to 20.
VIS : Good but moderate in showers and thundershowers in the south-
west towards the end of the period.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anticyclonic 05 to 15 in the central west and south-east, but
W to SW in the south-west, otherwise S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the extreme south-
west from mid-period.
TRISTAN (30S/40S, 00E/20W) :
WIND : S to SW 15 to 25 becoming anticyclonic 05 to 15 in the extreme
west by the end of the period.
VIS : Good but moderate in showers and rain in the east.
SEA STATE: 3.0 to 4.0m in the east, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Cyclonic 20 to 30 in the south-west until mid-period reaching
35 to 45 at first, but variable 05 to 10 in the extreme north-
east, otherwise NW to N 15 to 25 reaching 30 to 35 in places
over the southern half. It will become SW to W 15 to 25 in the
west from mid-period.
VIS : Good, but moderate in showers and rain in the west, spreading
to the east by mid-period.
SEA STATE: 3.0 to 4.0m, except in the north-east, reaching 4.5 to 5.5m in
places over the southern half, with W to NW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : SE to S 15 to 25 in the north-east reaching 30 to 40 in the
extreme north-east from mid-period, but anticyclonic 05 to 15
in the north drifting to the north-east from mid-period,
otherwise N to NW 15 to 25 reaching 30 to 35 in the south-west
towards the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in
the extreme north-east, as well as in the extreme south-west
towards the end of the period.
SEA STATE: 3.0 to 3.5m in the south, with W to SW swell, but 3.5 to 4.5m
with E to SE swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Cyclonic 20 to 30 in the east reaching 35 to 40 in the south-
east, otherwise S to SW 05 to 15 reaching 20 to 25 in places,
but N to NE 10 to 20 in the extreme south-west.
VIS : Moderate to poor in showers and thundershowers in places in
the east but very poor in the south-east until just after mid-
period, otherwise good.
SEA STATE: 3.0 to 4.0m in the east reaching 4.5 to 5.5m in the south-
east, with cyclonic swell.
MOZAMBIQUE CHANNEL:
WIND : S to SW 10 to 20 but SE in the extreme west.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : W to NW 15 to 25in the extreme south at first, otherwise
variable 05 to 10.
VIS : Good, but moderate in showers and thundershowers in places in
the south from mid-period.
SEA STATE: 3.0m in the extreme south, with W to SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 15 to 25 reaching 30 to 40 in the central parts,
spreading to the south-east towards mid-period until towards
the end of the period.
VIS : Good, but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in places, with W to SW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/10 AT 0400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER WAM AND CRO.
PART 2: GENERAL SYNOPSIS, 26/06/10 AT 0000UTC
- HIGH 1030 HPA NEAR 34S/71E MOVING EASTWARD.
- OCCLUSION FRONT OVER CRO AND KER.
- LOW 1009 HPA DEEPENING OVER NORTH-WESTERN AREA OF WAM.
- COLD FRONT AXIS 44S/42E, 48S/53E, 52S/57E, 59S/55E MOVING EASTWARD 20KT.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/10 AT 0600UTC TO 26/06/11 AT 0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND SQUALLS BY NORTH-WESTERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 INCREASING NORTHERLY 4 TO 6 BY WESTERN AREA THEN BECOMING CLOCKWISE 6 TO 7 LOCALLY 8 WITH GUSTS IN VICINITY OF LOW.
SEA: BECOMING MODERATE TO ROUGH. N SWELL 2 TO 3 METERS.
VIS: POOR TO VERY POOR UNDER PRECIPITATIONS.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE 3 TO 4 INCREASING W 4 TO 5 OVER SOUTHERN AREA.
SEA: MODERATE TO ROUGH BECOMING MODERATE. S SWELL 2 TO 3 M ABATING.
VIS: GOOD.
CRO (40S/50S, 50E/65E)
RAIN AND FRONTAL SHOWERS.
WIND: W TO NW 6 TO 7 LOCALLY 8 WITH GUSTS.
SEA: MODERATE TO ROUGH LOCALLY VERY ROUGH OVER SOUTHERN AREA. W TO SW SWELL 2 TO 3 METERS.
VIS: POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS.
WIND: W 5 TO 6 LOCALLY 7 WITH GUSTS.
SEA: MODERATE TO ROUGH. W TO SW SWELL 2 TO 3 METERS.
VIS: POOR IN PRECIPITATIONS.=