WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
03rd OF JULY 2026 AT 18:00 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 032200 TO 042200 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: N to NW 35 to 40 in the east.
2. CAPE WEST: NW to W 35 in the south-west until mid-period.
3. CAPE EAST: Cyclonic 35 to 45 in the east until mid-period.
4. DURBAN EAST: SW 35 in the south-east at first.
5. MARION FORTIES EAST: SE to S 35 to 45 in the north-east until mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1024 hPa 24s03e, High 1026 hPa 48s32e
1. Cold Front: 29s22w 32s17w 35s12w into 36s14w.
2. Cold Front: 34s17e 38s23e 43s20e into 45s14e.
3. Cold Front: 27s43e 34s48e 40s48e into 37s42e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good, but moderate in showers and rain in places.
ANGOLA (06S/15S, 00E/00N):
WIND : SW 05 to 10 in the east, otherwise S to SE 10 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : NW to N 15 to 25 in the south, otherwise anti-cyclonic 05 to 15,
but S to SW 05 to 15 in the south-west spreading to the south-
central parts from mid-period.
VIS : Good, but moderate in showers and rain in places in the south-west
spreading to the south-east from mid-period.
SEA STATE: 3.0m in the southern parts, with SW to S swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Anti-cyclonic 05 to 15 in the central-west, otherwise S to SE 10
to 20, but NW 10 to 20 in the south-west.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : N to NW 25 to 35 in the east , otherwise SW to W 20 to 30
spreading to the south-east from mid-period. It will become anti-
cyclonic 05 to 15 in the north-west towards the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in places
while clearing in the west from mid-period.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the extreme south from mid-
period, with SW swell but W to NW swell in the north-east.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to W 15 to 25 reaching 30 to 35 in the west drifting to the
South-east from mid-period, while becoming SW to S 20 to 30 in the
south-west towards mid-period.
VIS : Good, but moderate to poor in showers and thundershowers except in
the north-east.
SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.0m in the extreme south-west from
mid-period, with NW to W swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : Cyclonic 35 to 45 in the east until mid-period, otherwise W to NW
15 to 25, but variable 05 to 10 in the central parts. It will
become SW to S 20 to 30 in the east from mid-period moderating
towards the end of the period.
VIS : Good, but moderate to poor in showers and thundershowers in places
while clearing in the east from mid-period.
SEA STATE: 4.0 to 5.0m, reaching 6.0 to 7.0m in the east until the end of the
period, while subsiding 3.0 to 3.5m in places in the west from
mid-period, with S to SE swell but SW to W in the north-east and
in the west from mid-period.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anti-cyclonic 05 to 15 in the west, otherwise SW 15 to 25 reaching
30 to 35 in the south-east until mid-period, but N to NW 15 to 25
in the north-east until mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in places
in the east until mid-period but moderate in showers and rain in
the south-west by the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 7.0m in the south-central parts,
drifting to the south-east from mid-period, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : SE to S 05 to 15.
VIS : Good, but moderate in showers and rain in places in the south.
SEA STATE: 3.0 to 4.0m in the south, with S to SW swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south, otherwise S to SE 10 to 20.
VIS : Good, but moderate in showers and rain in the north.
SEA STATE: 3.0m in places in the north and in the extreme south towards the
end of the period, with SE swell but SW swell in the south.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SE to S 15 to 25 in the east, reaching 35 to 45 in the north-east
until mid-period, otherwise anti-cyclonic 05 to 15.
VIS : Good, but moderate in showers and rain in the north-east clearing
by mid-period, with possible blowing snow in the south.
SEA STATE: 3.5 to 4.5m, reaching 5.5 to 6.5m in the north-east until the end
of the period, with SE to E swell, but SW in the south.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/03 AT 1700UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- SEVERE GALE OVER WAM, CRO.
- GALE OVER AMS, KER.
PART 2: GENERAL SYNOPSIS, 26/07/03 AT 1200UTC
- HIGH-PRESSURE SYSTEM AT 1025 HPA NEAR 48S/32E, WEAKENING.
- LOW-PRESSURE SYSTEM AT 993 HPA NEAR 37S/42E, FORECAST TO BE 983 HPA
NEAR 40S/57E ON SATURDAY AT 12 UT.
- COLD FRONT AXIS 40S47E, 35S48E, 30S44E, AND 25S40E, MOVING RAPIDLY
EASTWARD.
- WARM FRONT AXIS 40S40E, 44S45E, 43S50E, AND 40S59E.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/03 AT 1800UTC TO 26/07/04
AT 1800UTC
WAM (30S/40S, 50E/65E)
HEAVY RAIN AND THUNDERSTORMS ASSOCIATED WITH A COLD FRONT MOVING
ACROSS THE REGION FROM WEST TO EAST.
WIND: NORTH TO NORTHWEST, FORCE 5 TO 7, LOCALLY 8, FROM EAST TO WEST,
STRENGTHENING TO FORCE 6 TO 7, LOCALLY 8 TO 9, TOMORROW NORTH OF THE
LOW-PRESSURE SYSTEM, THEN BACKING TO WEST TO SOUTHWEST VIA THE WEST.
VIOLENT GUSTS.
SEA : ROUGH TO VERY ROUGH , BECOMING VERY ROUGH TO HIGH, REMAINING
LOCALLY ROUGH IN THE NORTHEASTERN PART OF THE AREA. SOUTHWEST SWELL
RANGING FROM 1.50 TO 3.50 METERS WILL EXTEND FROM THE NORTHWEST TO
THE SOUTHEAST, FOLLOWED BY A WEST SWELL RANGING FROM 3 TO 5 METERS IN
THE WESTERN PART OF THE AREA.
VIS : VERY POOR DURING PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS IN THE SOUTHEAST, FOLLOWED BY WORSENING WEATHER
FROM THE WEST, WITH HEAVY RAIN AND THUNDERSTORMS ASSOCIATED WITH A
COLD FRONT.
WIND:
IN THE NORTHERN HALF: HIGH-PRESSURE SYSTEM, FORCE 2 TO 4, SHIFTING TO
NORTHWEST, FORCE 4 TO 6 OR EVEN 7, FROM EAST TO WEST
IN THE SOUTHERN HALF: SOUTHWEST TO WEST, FORCE 4 TO 7, FROM WEST TO
EAST, SHIFTING TO WEST, THEN NORTHWEST TO NORTH, FORCE 5 TO 7,
LOCALLY 8, FROM EAST TO WEST.
SEA : ROUGH TO HIGH FROM THE NORTHWEST TO THE SOUTHEAST, BECOMING
ROUGH TO VERY ROUGH FROM THE NORTH TO THE SOUTH. SOUTHWEST SWELL OF 3
TO 5 METERS FROM THE NORTHWEST TO THE SOUTHEAST.
VIS : VERY POOR IN HEAVY RAIN.
CRO (40S/50S, 50E/65E)
HEAVY RAIN AND THUNDERSTORMS ACROSS MUCH OF THE NORTHERN HALF OF THE
AREA DUE TO THE DISTURBANCE, SCATTERED SHOWERS IN THE SOUTH.
WIND:
NORTHERN HALF: NORTHEAST TO EAST, FORCE 5 TO 7, LOCALLY 8, VEERING
SOUTHEAST TO SOUTH FROM THE WEST, FORCE 6 TO 8, LOCALLY 9, BEHIND THE
LOW-PRESSURE SYSTEM. VARIABLE WINDS, FORCE 3/4, AT THE CENTER OF THE
LOW-PRESSURE SYSTEM. VIOLENT GUSTS.
SOUTHERN HALF: SOUTHWEST TO SOUTH, FORCE 3 TO 4, LOCALLY VARIABLE AT
FORCE 2, SHIFTING TO A SOUTHERLY DIRECTION, FORCE 4 TO 5, LOCALLY 6
IN THE NORTH.
SEA : ROUGH TO VERY ROUGH, BECOMING VERY ROUGH TO HIGH IN THE NORTHERN
HALF. SOUTHWEST SWELL OF 2 TO 5 METERS FROM WEST TO EAST, SUBSIDING.
VIS : POOR TO VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SCATTERED SHOWERS, FOLLOWED BY WORSENING WEATHER FROM THE WEST ACROSS
THE NORTHERN HALF OF THE COUNTRY, WITH HEAVY RAIN AND THUNDERSTORMS.
WIND:
IN THE EASTERN HALF: SOUTHWEST FORCE 7 TO 8, VEERING WEST TO
SOUTHWEST FORCE 4 TO 6, LOCALLY 7 IN THE SOUTHEASTERN PART OF THE
AREA, THEN NORTHWEST FORCE 5 TO 7
IN THE WESTERN HALF: SOUTHWEST WINDS OF FORCE 6 TO 7 VEERING WEST,
FORCE 4 TO 5, LOCALLY VARIABLE AT FORCE 2 TO 3, THEN NORTH TO
NORTHWEST IN THE NORTHERN PART OF THE AREA, FORCE 6 TO 7, LOCALLY 8.
AT THE END OF THE FORECAST PERIOD, SOUTH OF THE LOW-PRESSURE SYSTEM,
SOUTH TO SOUTHEAST WINDS OF FORCE 4 TO 7 FROM SOUTH TO NORTH.
SEA : VERY ROUGH TO HIGH. A 4 TO 6 METER SOUTHWEST SWELL IS COMING
FROM THE WEST.
VIS : VERY POOR IN HEAVY RAIN.