WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
08TH OF JULY 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:
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FORECAST VALID FROM 082200 TO 092200 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. TRISTAN: Cyclonic 35 in the west at first.
2. CAPE EAST: N to NW in the south-east at first, but SW to S 35 to 40 in the extreme south-west drifting to the extreme south-east from mid-period.
3. MARION FORTIES EAST: W to SW 35 to 45 in the extreme east at first and in
the north-west towards mid-period drifting to the
north-east by mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1034 hPa 33s65e.
1. Cold Front: 17s12w 22s06w 32s03w 36s13w into 32s11w.
2. Cold Front: 35s20e 36s30e 40s36e into 43s38e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20 but variable 05 to 10 in the south-west.
VIS : Good.
SEA STATE: 3.0m in the south-west spreading to the north and east from mid-
period, with S to SW swell.
ANGOLA (06S/15S, 00E/00N):
WIND : SW 05 to 10 in the east, otherwise S to SE 10 to 20.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 15 in the north drifting to the south-east from
mid-period, otherwise NW to W 15 to 25 reaching 30 in the south-
central until mid-period and in the west towards the end of the
period.
VIS : Good but moderate in showers and rain in the extreme south at
first but poor in showers and thundershowers in the south-west
from mid-period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-central at first,
with S to SW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : variable 05 to 10 in the south-west, otherwise S to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m in the south subsiding from mid-period, with S to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 25 to 35, but NE to E 15 to 25 in the south-east,
becoming NW to W 15 to 25 in the north and west from mid-period.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 4.0 to 5.0m reaching 5.5 to 6.5m in the west at first, while
subsiding 3.0 to 4.0m towards the end of the period, with SE to E
swell but NW to W swell in the north.
CAPE WEST (30S/40S, 00E/20E):
WIND : SE 15 to 25 in the north-east, otherwise NE to E 15 to 25, but SW
15 to 25 in the south-east.
VIS : Good but moderate to poor in showers and thundershowers in the
west.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-east, with SW to S
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 25 to 35 in the east until towards the end of the period,
otherwise SW to W 20 to 30 reaching 35 to 40 in the extreme south-
west drifting to the extreme south-east from mid-period.
VIS : Moderate in showers and rain but poor in showers and
thundershowers in the east until the end of the period.
SEA STATE: 3.5 to 4.5m reaching 5.0 to 6.0m in the south but 6.5 to 7.5m in
the south-central from mid-period, with NW swell in the east,
otherwise SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE to E 10 to 20 in the north-east, otherwise N to NW 10 to 20,
but SW to S 10 to 20 in the south-west.
VIS : Good in the north-west, otherwise moderate to poor in showers and
thundershowers
SEA STATE: 3.0 to 4.0m in the south from mid-period, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 in the north, otherwise variable 05 to 10.
VIS : Good but moderate in showers and rain in places in the north.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 in the north, otherwise NE to N to 10 to 20 but
variable 05 to 10 in the central-west.
VIS : Moderate in showers and rain.
SEA STATE: 3.0 to 3.5m, with SE to S swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 25 to 30 reaching 35 to 45 in the extreme east at first
and in the north-west towards mid-period drifting to the north-
east by mid-period.
VIS : Moderate to poor in showers and rain but poor in snow-showers in
the south.
SEA STATE: 5.0 to 6.0m reaching 7.0 to 8.0m in the north-east at first and in
the north-west from mid-period, with W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/08 AT 1700UTC
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 EXPECTED OVER WAM AND KER.
- STORM OR VIOLENT STORM EXPECTED OVER SOUTHWESTERN CRO SOON.
PART 2: GENERAL SYNOPSIS, 26/07/08 AT 1200UTC
- DEEPENING LOW 984 HPA NEAR 44S/39E, MOVING SOUTHEASTWARD , 40/45 KT
WITH COLD FRONT AXIS
35S/23E, 36S/29E, 39S/34E, 42S/38E.
- HIGH 1034 HPA NEAR 33S/66E, MOVING EASTWARD 20/25KT.
- WARM FRONT OVER CRO AND KER AT FIRST.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/08 AT 1800UTC TO 26/07/09
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS AND RAIN.
WIND:
- IN NORTH: N 4 TO 6
- IN SOUTH : NORTHWEST 5 OR 6, GRADUALLY INCREASING 6 OR 7, LOCALLY 7
OR 8. SEVERE GUSTS.
SEA: MODERATE OR ROUGH IN NORTH, VERY ROUGH TO LOCALLY HIGH IN SOUTH.
VISI: POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FEW SHOWERS.
WIND:
- IN NORTH: ANTICLOCKWISE 3 TO 5.
- IN SOUTH: NW 5 TO 6 LOCALLY 7 OVER FAR SOUTHERN.
SEA: MODERATE OR ROUGH, LOCALLY VERY ROUGH OVER FAR SOUTHWESTERN. SW
SWELL 2 TO 3 METERS.
VISI: GOOD BUT LOCALLY MODERATE IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
RAIN OR SHOWERS. GRAINS.
WIND : INCREASING CLOCKWISE 7 TO 8 , LOCALLY 9 TO 10 IN SOUTHWEST ,
AT TIMES 11 NEAR THE CENTER. DECREASING LATER NW 4 TO 6 BEHIND THE
LOW AND INCREASING W 6 TO 7 AT TIMES 8 BY WESTERN AREA AT END.
VIOLENT GUSTS.
SEA: VERY ROUGH TO HIGH LOCALLY VERY ROUGH OVER FAR SOUTHERN AREA. SW
SWELL 4 TO 6 METERS.
VISI: VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SHOWERS.
WIND: W 6 TO 7 DECREASING TEMPORARILY W 4 TO 6 OVER SOUTHERN AREA AT
FIRST AND INCREASING NW 7/8 BY WESTERN AREA SOON. SEVERE GUSTS.
SEA: VERY ROUGH TO HIGH. SW SWELL INCREASING 4 TO 6 M LATER.
VISI: POOR IN PRECIPITATION.=