WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF OCTOBER 2026 AT 16:15 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. TRISTAN : W TO SW 35 IN THE SOUTHERN PARTS, SPREADING TO THE SOUTH-
EAST BY THE END OF THE PERIOD WHILE MODERATING IN THE SOUTH.
2. CAPE WEST: W TO NW 35 IN THE SOUTH-EAST AT FIRST AND
BY THE END OF
THE PERIOD.
3. CAPE EAST: NW 35 IN THE SOUTH-WEST AT FIRST.
4. DURBAN EAST : N TO NE 35 IN THE WEST AND SOUTH-WEST
FROM MID-PERIOD.
5. MARION FORTIES EAST: W TO SW 35 IN THE SOUTH-EAST AT FIRST, BUT N
TO
NW 35 IN THE SOUTH-WEST FROM MID-PERIOD
SPREADING TO THE
SOUTH BY THE EVENING.
SYNOPTIC CHART 12:00Z
=====================
HIGH 1020 HPA 24S04W, HIGH 1024 HPA 38S36E.
LOW 991 HPA 45S07E, LOW 949 HPA 65S41E.
1. COLD FRONT: 28S03W 32S04E 36S09E 41S10E INTO 45S07E.
2. COLD FRONT: 36S52E 41S56E 45S63E 50S68E 54S69E
60S65E 62S60E 64S53E
INTO 65S41E.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E TO SE 05 TO 15.
VIS : GOOD.
ANGOLA (06S/15S, 00E/00N):
WIND : S TO SE 05 TO 15 BUT W TO SW 05 TO 15 IN
THE EAST.
VIS : GOOD.
ST HELENA (15S/30S, 00E/20W):
WIND : ANTICYCLONIC 05 TO 15, BUT S TO SW 15 TO 25 IN THE SOUTH.
VIS : GOOD BUT MODERATE IN RAIN AND SHOWERS IN THE SOUTH AND
SOUTH-EAST. CLEARING IN THE SOUTH FROM MID-PERIOD AS WELL
AS
SOUTH-EAST BY THE END OF THE PERIOD.
SEA STATE: 3.0M IN THE SOUTH FROM THE MORNING, WITH SW
SWELL.
TRADES (15S/30S, 00E/WEST COAST):
WIND : W TO NW 15 TO 25 IN THE EXTREME SOUTH-WEST, BECOMING SW 15
TO
25 FROM MID-PERIOD, BUT ANTI-CYCLONIC 05 TO 15 IN THE WEST
AND
SOUTHERN PARTS, OTHERWISE S TO SE 05 TO 15 REACHING 25 IN
THE
SOUTH-EAST AT FIRST.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE SOUTH-WEST.
SEA STATE: 3.0M IN THE SOUTH-WEST BY THE END OF THE
PERIOD, WITH SW
SWELL.
TRISTAN (30S/40S, 00E/20W):
WIND : NW 15 TO 25 IN THE EAST AT FIRST, OTHERWISE W
TO SW 15 TO 25
REACHING 30 TO 35 IN THE SOUTHERN PARTS, SPREADING TO THE SOUTH-
EAST BY THE END OF THE PERIOD WHILE MODERATING
IN THE SOUTH.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE CENTRAL,
SOUTH
AND EASTERN PARTS. CLEARING IN THE CENTRAL FROM THE
MORNING
AND SOUTH BY THE EVENING.
SEA STATE: 3.0 TO 4.0M (EXCEPT IN THE EAST AND NORTH-EAST
AT FIRST)
REACHING 4.5 TO 5.5M IN THE SOUTH-WEST SPREADING TO THE SOUTH-
EAST FROM THE AFTERNOON WHILE SUBSIDING IN THE
SOUTH-WEST,
WITH SW SWELL.
CAPE WEST (30S/40S, 00E/20E):
WIND : ANTI-CYCLONIC 05 TO 15 IN THE NORTH AND
NORTH-EAST, OTHERWISE
W TO NW 15 TO 25 SPREADING TO THE NORTH FROM MID-PERIOD
WHILE
REACHING 30 TO 35 IN THE SOUTH-EAST AT FIRST AND BY THE
END OF
THE PERIOD.
VIS : MODERATE IN SHOWERS AND RAIN IN THE SOUTH-EAST
AT FIRST, BUT
MODERATE TO POOR IN SHOWERS AND RAIN IN THE WEST SPREADING
TO
THE SOUTH FROM MID-PERIOD AS WELL AS SOUTH-EAST BY THE END
OF
THE PERIOD.
SEA STATE: 3.0 TO 4.0M IN THE CENTRAL AND SOUTHERN PARTS,
SPREADING TO
THE WEST FROM THE AFTERNOON, WITH W TO SW SWELL.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N TO NE 20 TO 30 IN THE NORTH-WEST, SPREADING
TO THE CENTRAL
AND SOUTHERN PARTS FROM THE MORNING, BUT NW 15 TO 25 IN
THE
SOUTH-WEST REACHING 30 TO 35 AT FIRST, OTHERWISE
ANTI-CYCLONIC
05 TO 15.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE
SOUTH-WEST AT
FIRST. IT WILL BECOME MODERATE TO POOR IN SHOWERS AND
THUNDERSHOWERS IN THE CENTRAL PARTS FROM THE
MORNING,
SPREADING TO THE SOUTH AND NORTH-WEST FROM THE AFTERNOON.
SEA STATE: 3.0 TO 4.0M IN THE CENTRAL, SOUTH AND WESTERN PARTS, WITH
SW
SWELL.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N TO NE 15 TO 25 IN THE WEST AND SOUTH-WEST
REACHING 30 TO 35
FROM MID-PERIOD, OTHERWISE E TO SE 05 TO 15 REACHING 20 TO
30
IN THE NORTH SPREADING TO THE CENTRAL PARTS FROM THE
EVENING.
VIS : GOOD.
SEA STATE: 3.0 TO 3.5M IN THE SOUTH-WEST FROM THE MORNING, WITH NE SWELL.
MOZAMBIQUE CHANNEL:
WIND : S TO SE 10 TO 20, REACHING 25 TO 30 IN THE SOUTH-EAST.
VIS : GOOD BUT MODERATE IN SHOWERS AND THUNDERSHOWERS OVER THE
NORTH-EAST AT FIRST AND BY THE END OF THE PERIOD.
SEA STATE: 3.0 TO 3.5M IN THE SOUTH-EAST DURING THE FIRST
HALF OF THE
PERIOD, WITH S TO SE SWELL.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : NE 05 TO 15 IN THE SOUTH, OTHERWISE E TO SE 15
TO 25.
VIS : GOOD BECOMING MODERATE IN LIGHT RAIN IN THE NORTH FROM THE
EVENING.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W TO SW 15 TO 25 REACHING 30 TO 35 IN THE
SOUTH-EAST AT FIRST.
IT WILL BECOME N TO NW 15 TO 25 IN THE WEST FROM THE
MORNING
REACHING 30 TO 35 IN THE SOUTH-WEST FROM MID-PERIOD
SPREADING
TO THE SOUTH BY THE EVENING.
VIS : GOOD BUT MODERATE IN RAIN AND SNOW-SHOWERS IN
THE SOUTH AT
FIRST. IT WILL BECOME MODERATE TO POOR IN SHOWERS AND RAIN
IN
THE WESTERN HALF FROM MID-PERIOD SPREADING TO THE
SOUTH-EAST
BY THE END OF THE PERIOD.
SEA STATE: 3.0 TO 4.0M REACHING 5.0 TO 7.0M IN THE
SOUTHERN PARTS, WITH W
TO SW SWELL.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA
REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/10/10 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- NIL.
PART 2: GENERAL SYNOPSIS, 26/10/10 AT 1200UTC
- COLD FRONT OVER CRO, AXIS 37S/54E, 44S/64E, 50S/67S, MOVING
EASTWARD.- HIGH1030 HPA NEAR 40S/86E WITH A RIDGE EXTENDING
NORTHWESTWARD, MOVING SLOWLY EASTWARD.- HIGH1024 HPA NEAR 36S/39E,
EXPECTED 1033 HPA NEAR 38S/51E AT THE END.
PART 3: FORECAST FOR 24 HOURS FROM 26/10/10 AT 1800UTC TO 26/10/11
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND FRONTAL RAIN.
WIND : NORTHERLY 3 TO 5 FROM NORTH TO SOUTH AHEAD OF THE FRONT,
BACKING SOUTHERLY THEN SOUTHEASTERLY 3/5 BEHIND, REACHING
LOCALLY 6 IN THE SOUTHEAST AT END.
SEA : MODERATE TO ROUGH.
VISI : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS, THEN SHOWERS AND FRONTAL RAIN.
WIND : VARIABLE ANTICLOCKWISE 2/4, SETTLING FROM SOUTH-WEST
NORTHWESTERLY 4 TO 6 FROM NORTH TO SOUTH AHEAD THE FRONT,
BACKING SOUTHERLY 5/6 BEHIND OVER SOUTH-WEST AT END.
SEA : MODERATE, BUT ROUGH IN FAR SOUTH.
VISI : POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SCATTERED SHOWERS, BUT RAIN AND FRONTAL SHOWERS IN THE NORTHEAST AT
FIRST.
WIND : NORTHERN HALF: SOUTHWESTERLY 4/6, BECOMING VARIABLE 2/4 IN
THE NORTHWEST AT END. BUT NORTHWEST 4/5 IN THE NORTHEAST AT
START.SOUTHERN HALF: WESTERLY THEN SOUTHWEST 5/6,
REACHING 7 IN THE SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH, BECOMING VERY ROUGH TO HIGH IN THE
SOUTH. ARRIVAL OF SOUTHWEST SWELL 3 TO 6 METERS BY
SOUTHWEST.
VISI : POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS.
WIND : NORTHWESTERLY 6/7 WITH GUSTS AHEAD THE FRONT,
BACKING WESTERLY THEN SOUTHWESTERLY 5/6, LOCALLY 4 BEHIND.
SEA : ROUGH TO VERY ROUGH, LOCALLY MODERATE IN THE NORTH.
WESTERLY TO NW SWELL 2 TO 4 METERS, THEN ARRIVAL OF SOUTHWEST
SWELL 2 TO 4 METERS IN THE SOUTHWEST AT END.
VISI : POOR IN PRECIPITATION.