WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF JUNE 2026 AT 16:45 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 102200 TO 112200 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: NW to N 35 in places in the south-east.
2. CAPE EAST: SE to S 35 to 40 in the extreme north-east until mid-period
and N to NW 35 in the west.
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 12:00Z
=====================
High 1023 hPa 33s34e
Low 1001 hPa 42s11e, Low 1004 hPa 30s50e
1. Cold Front: 29s03w 34s03e 38s06e into 39s03e.
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 central east until mid-period,
otherwise S to SE 10 to 20, but E 10 to 20 in the
extreme west reaching 25 in the extreme south-east.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west.
SEA STATE: 3.0m in the extreme south-west from mid-period, with SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : NW 10 to 20 in the south-west at first becoming S to SW 10 to
15, but anticyclonic 05 to 15 in the central west and south-
east, otherwise S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the extreme south-
west and south-east until towards the end of the period.
TRISTAN (30S/40S, 00E/20W) :
WIND : S to SW 15 to 25 becoming anticyclonic 05 to 15 in the extreme
west towards mid-period.
VIS : Good but moderate in showers and rain in the east at first.
SEA STATE: 3.0 to 4.0m in the east, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Variable 05 to 10 in the extreme north-east at first, but NW
to N 15 to 25 in the east reaching 30 to 35 in places in the
south-east, otherwise SW to W 15 to 25 reaching 30 at times.
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 extreme 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 until mid-period, but anticyclonic 05 to 15
in the central north and south-east, otherwise N to NW 15 to
25 reaching 30 to 35 in the west.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.5 to 4.5m in the west, with W to NW swell, but 3.0 to 4.0m
in the north-east 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 until mid-period, but S to SE 05 to 15 in the center,
otherwise N to NE 05 to 15 in the west reaching 20 in the
extreme south-west at times.
VIS : Moderate to poor in showers and thundershowers in places in
the east but very poor in the south-east until mid-period,
otherwise good.
SEA STATE: 3.0 to 4.0m in the east reaching 4.5 to 5.5m in places, 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 : Variable 05 to 10, becoming E to NE 05 to 15 in the north
towards the end of the period.
VIS : Good, but moderate in showers and thundershowers in places in
the south.
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 1400UTC
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, CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/06/10 AT 1200UTC
- HIGH 1030 HPA NEAR 34S/71E MOVING EASTWARD.
- OCCLUSION FRONT OVER CRO AND KER.
- LOW 1003 HPA DEEPENING OVER NORTH-WESTERN WAM.
- DISTURBANCE OVER WESTERN CRO AT FIRST MOVING QUICKLU EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/10 AT 1800UTC TO 26/06/11
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND SQUALLS BY NORTH-WESTERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 BECOMING CLOCKWISE 6 TO 7 LOCALLY 8 WITH
GUSTS IN VICINITY OF LOW.
SEA: MODERATE TO ROUGH. N SWELL 2 TO 3 M.
VISI: 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.
SEA: MODERATE TO ROUGH. SW SWELL 2 TO 3 M OVER SOUTH-EASTERN ABATING.
VISI: 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. W TO SW
SWELL 2 TO 3 M.
VISI: POOR IN PRECIPITATIONS.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS.
WIND: W 5 TO 6 INCREASING 6 TO 7 LOCALLY 8 WITH GUSTS LATER.
SEA: ROUGH TO VERY ROUGH. W TO SW SWELL 2 TO 3 M.
VISI: POOR IN PRECIPITATIONS.=