WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
30TH OF JUNE 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 302200 TO 012200 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 EAST: Cyclonic 35 in the north-west, spreading to the central
parts from mid-period, as well as southern parts by the
end of the period, while moderating in the north-west.
2. MARION FORTIES EAST: W to SW 35 in the southern parts at times.
SYNOPTIC CHART 12:00Z
=====================
High 1030 hPa 32s15w, High 1037 hPa 38s78e
Low 1018 35s02w hPa Low 962 hPa 54s28w, Low 954 hPa 60s66e.
1. Cold Front: 27s10w 30s02w into 35s02w
2. Cold Front: 27s37w 33s30w 38s24w 43s20w 50s20w into 54s28w.
3. Cold Front: 32s46e 37s49e 43s54e 48s61e 52s70e into 60s66e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 15 to 25, reaching 30 in places in the west and south-west
at times.
VIS : Moderate in light rain and showers in places.
SEA STATE: 3.0 to 3.5m in the central and west, spreading to the east towards
the end of the period, 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
in the south from the morning.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south towards mid-period, with S to SW swell.
ST HELENA (15S/30S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the south, but SW 10 to 20 in the
south-east at first, otherwise E to SE 15 to 25.
VIS : Moderate in showers and rain in places in the north, but moderate
in showers and thundershowers in the south-east at first.
SEA STATE: 3.0 to 4.0m in the north and south-east, with S to SE swell, but
SW in the south-east.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anti-cyclonic 05 to 15 in the south, otherwise S to SE 15 to 25,
reaching 30 in the north-east.
VIS : Good, but moderate in showers and thundershowers in the south-west
at first.
SEA STATE: 3.0 to 3.5m in the north and eastern parts, as well as over the
south-west towards mid-period, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15, but N to NW 15 to 25 in the west, reaching
30 in the south-west at first, spreading to the south from mid-
period, as well as central and south-east by the end of the
period.
VIS : Good, but moderate in showers and rain in the west and south-west,
spreading to the south from the morning, while clearing in the
south-west from mid-period.
SEA STATE: 3.0 to 4.0m, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SW 15 to 25 in the south-east, but cyclonic 15 to 25 in the
south-west, otherwise anticyclonic 05 to 15.
VIS : Moderate in showers and rain in places, but good in the north.
Clearing in the west from the afternoon.
SEA STATE: 3.0 to 3.5m in the east and north-west, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Anti-cyclonic 05 to 15, but cyclonic 15 to 25 in the west,
reaching 30 to 35 in the north-west, spreading to the central
parts from mid-period, as well as southern parts by the end of the
period, while moderating in the north-west.
VIS : Good, but moderate to poor in showers and thundershowers in places
in the western half, spreading to the central parts from mid-
period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the south-east at first, with SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 05 to 15, but N to NE 15 to 25 in the west and
south-west, reaching 30 in the south-west.
VIS : Moderate in showers and rain in places in the west and south-west,
but moderate in showers and thundershowers in the south-east until
in the afternoon, otherwise good.
SEA STATE: 3.0 to 3.5m in the east, and in places in the southern half, with
SE in the east, but NE in the south-west, otherwise S to SW.
MOZAMBIQUE CHANNEL:
WIND : N to NE 05 to 15 in the south-west, spreading to the west from
mid-period, otherwise S to SE 10 to 20.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise S to SE 15 to 25.
VIS : Good, but moderate in showers and rain in the north.
SEA STATE: 3.0m in the south-east, with SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the northern parts, otherwise W to
SW 15 to 25, reaching 30 to 35 in the southern parts at times.
VIS : Good, but moderate in snow-showers and rain in the south,
spreading to the central and northern parts from the morning.
SEA STATE: 3.5 to 4.5m, reaching 5.0 to 7.0m in the central and south, 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)
26/06/30 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- LOCALLY GALE OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/06/30 AT 0000UTC
- HIGH1040 HPA NEAR 39S/75E, MOVING EAST-NORTH-EASTWARD 20 KT
- COLD FRONT AXIS 33S/41E, 42S/48E, 52S/59E MOVING EASTWARD 20 KT.
- SQUALLY WEATHER OVER NORTHWESTERN AMS WITH A DEEPENING LOW AT
FIRST.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/30 AT 0600UTC TO 26/07/01 AT
0600UTC
WAM (30S/40S, 50E/65E)
FRONTALS SHOWERS AND RAIN.
WIND: N OR NW 4 TO 6 AHEAD THE FRONT BACKING S 3 TO 5, AT TIMES 6/7
BEHIND.
SEA: ROUGH. E SWELL 2 TO 3 METERS AHEAD THE FRONT, SW SWELL 2 TO 3
METERS BEHIND.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SQUALLS AND SHOWERS.
WIND: ANTICLOCKWISE 3 TO 5 INCREASING E 6/7 OVER NORTHERN BECOMING
CLOCKWISE 4 TO 6 OVER NORTHWESTERN. GUSTS.
SEA: MODERATE TO ROUGH OVER SOUTHERN, ROUGH TO VERY ROUGH OVER
NORTHERN. SW SWELL 2 TO 3 METERS ABATING.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS. SQUALLS.
WIND: NW 6 TO 7 AHEAD THE FRONT, AT TIMES 8 BACKING ANTICLOCKWISE 3
TO 5 OVER NORTHERN AREA AND W 6/7 OVER SOUTHERN. GUSTS.
SEA: ROUGH TO VERY ROUGH IN NORTH, VERY ROUGH TO HIGH IN SOUTH. SW
SWELL 3 TO 4 METERS SOON.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS EXPECTED OVER SOUTHWESTERN AREA SOON.
WIND: ANTICLOCKWISE 3 TO 5 OVER NORTHEASTERN AT FIRST, INCREASING NW
6/7, AT TIMES 8 AHEAD THE FRONT AND BACKING W 4 TO 6 IN SOUTHWESTERN
AREA AT END.
SEA: ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. SW SWELL 3 METERS.
VISI: POOR IN PRECIPITATION.