WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
28TH OF SEPTEMBER 2026 AT 16:30 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 282200 TO 292200 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 IN PLACES OVER THE CENTRAL AND SOUTHERN
PARTS,
BUT CYCLONIC 35 IN THE WEST TOWARDS MID-PERIOD.
2. CAPE WEST: E TO SE 35 IN THE EAST.
3. CAPE EAST: S TO SW 35 IN THE SOUTH-EAST.
4. MARION FORTIES EAST: CYCLONIC 35 TO 40 IN THE CENTRAL
NORTH AND
NORTH-EASTERN PARTS UNTIL THE AFTERNOON.
SYNOPTIC CHART 12:00Z
=====================
HIGH 1031 HPA 39S17E, HIGH 1035 HPA 38S74E.
LOW 1001 HPA 38S18W, LOW 992 HPA 45S43E.
1. COLD FRONT: 21S28W 29S20W 35S15W INTO 38S21W.
2. COLD FRONT: 26S34E 34S46E 40S50E INTO 45S43E.
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 10 TO 20 BUT SW 05 TO 10
IN THE EAST.
VIS : GOOD.
ST HELENA (15S/30S, 00E/20W):
WIND : ANTI-CYCLONIC 05 TO 15 IN THE NORTHERN PARTS, OTHERWISE W
TO
NW 15 TO 25, REACHING 30 IN PLACES IN THE SOUTH AND SOUTH-
WEST.
VIS : GOOD BUT MODERATE IN SHOWERS AND
THUNDERSHOWERS IN THE SOUTH
AND SOUTH-WESTERN PARTS.
SEA STATE: 3.0 TO 4.0M IN THE SOUTH-WEST, WITH SW SWELL.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S TO SE 05 TO 15, REACHING 20 TO 25 IN THE
SOUTH-EAST AT
FIRST.
VIS : GOOD.
SEA STATE: 3.0M IN THE SOUTH-EAST AT FIRST, WITH S TO SE
SWELL.
TRISTAN (30S/40S, 00E/20W):
WIND : N TO NW 15 TO 25, REACHING 30 TO 35 IN PLACES OVER THE
CENTRAL
AND SOUTHERN PARTS, BUT CYCLONIC 20 TO 30 IN THE WEST,
REACHING 35 TOWARDS MID-PERIOD.
VIS : GOOD BUT MODERATE IN SHOWERS AND
THUNDERSHOWERS IN THE NORTH,
SOUTH AND WESTERN HALF, SPREADING TO THE EAST FROM THE
EVENING.
SEA STATE: 3.0 TO 4.0M IN THE WEST, SOUTH AND
CENTRAL PARTS, REACHING 4.5
TO 5.0M IN THE SOUTH-WEST, SPREADING TO THE WEST FROM MID-
PERIOD, WITH NW SWELL, BUT SW IN THE WEST.
CAPE WEST (30S/40S, 00E/20E):
WIND : ANTI-CYCLONIC 05 TO 15 IN THE
SOUTH-EAST UNTIL MID-PERIOD, BUT
N TO NE 15 TO 25 IN THE WEST, OTHERWISE E TO SE 15 TO 25,
REACHING 30 TO 35 IN THE EAST.
VIS : GOOD.
SEA STATE: 3.0 TO 4.0M IN THE EASTERN PARTS,
WITH S TO SE SWELL.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : ANTI-CYCLONIC 05 TO 15 IN THE SOUTH-WEST, BUT E TO NE 15
TO 25
IN THE WEST, REACHING 30 IN PLACES FROM THE MORNING,
OTHERWISE
S TO SW 15 TO 25, REACHING 30 TO 35 IN THE SOUTH-EAST.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE
CENTRAL AND
EASTERN PARTS.
SEA STATE: 3.0 TO 4.0M (EXCEPT IN THE SOUTH-WEST),
REACHING 4.5 TO 5.5M
IN THE CENTRAL AND SOUTHERN PARTS BUT 6.0 TO 6.5M IN THE
SOUTH-EAST, WITH SE SWELL IN THE WEST,
OTHERWISE S TO SW.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N TO NE 15 TO 25 IN THE EAST, OTHERWISE S TO SW 15 TO 25,
BECOMING SE 15 TO 25 IN THE WEST TOWARDS THE END OF THE
PERIOD.
VIS : GOOD BUT MODERATE TO POOR IN SHOWERS
AND THUNDERSHOWERS IN THE
NORTH-WEST AND CENTRAL PARTS AT FIRST AS WELL AS
SOUTH-EAST
SPREADING TO THE EAST FROM MID-PERIOD.
SEA STATE: 3.0 TO 4.0M IN THE SOUTH AND WESTERN PARTS,
WITH S TO SW
SWELL.
MOZAMBIQUE CHANNEL:
WIND : E TO NE 05 TO 15 IN THE WEST AND NORTH-WESTERN
PARTS DURING
THE FIRST HALF OF THE PERIOD, OTHERWISE S TO SE 05 TO 15,
REACHING 20 TO 30 IN THE SOUTHERN PARTS
SPREADING TO THE
CENTRAL FROM THE EVENING.
VIS : GOOD BUT MODERATE IN SHOWERS AND THUNDERSHOWERS
IN THE
SOUTH-WEST.
SEA STATE: 3.0 TO 3.5M IN THE SOUTH-WEST SPREADING TO THE
SOUTH-EAST FROM
THE EVENING, WITH S TO SE SWELL.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : S TO SE 10 TO 20 BUT N TO NE 05 TO 15 IN THE
SOUTH, REACHING
20 TO 25 AT FIRST.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN PLACES
IN THE CENTRAL
AND EAST UNTIL MID-PERIOD.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : CYCLONIC 30 TO 40 IN THE CENTRAL NORTH AND
NORTH-EASTERN PARTS
UNTIL THE AFTERNOON, OTHERWISE S TO SW 15 TO 25.
VIS : GOOD BUT MODERATE IN SHOWERS AND RAIN IN THE
CENTRAL AND
EASTERN PARTS.
SEA STATE: 3.5 TO 4.5M, REACHING 5.5 TO 6.5M IN THE
CENTRAL AND NORTHERN
PARTS, WITH W TO SW SWELL.
AREA 2:
======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA
REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/09/28 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
GALE EXPECTED OVER KER.
PART 2: GENERAL SYNOPSIS, 26/09/28 AT 1200UTC
LOW 992 NEAR 44S/43E, MOVING EASTWARD. COLD FRONT 24S/32E,
28S/40E, 30S/42E, 40S/48E, 46S/47E.- HIGH 1035 OVER AMS
LEAVING AREA.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/28 AT 1800UTC TO
26/09/29 AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL RAIN.
WIND: NORTH-WESTERLY 4/6 OVER NORTHERN, 6/7 OVER SOUTHERN.
SEA: MODERATE TO ROUGH, LOCALLY VERY ROUGH OVER SOUTHERN.
VIS: POOR TO VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
RARE SHOWERS.
WIND: ANTICLOCKWISE 2/4 INCREASING N 4/5 OVER WESTERN AT END.
SEA: ROUGH BECOMING MODERATE FROM WEST. SW SWELL 2 TO 4 M ABATING.
VIS: GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN OR SNOW.
WIND: N TO NW 6/7 DECREASING TEMPORARILY W 3/5 THEN INCREASING
SW 5/6 LOCALLY 7 OVER NORTHERN AT END.
SEA: ROUGH. NW SWELL 2 TO 4 M.
VISI: VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN OR SNOW OVER SOUTHWESTERN SOON.
WIND: NORTH-WESTERLY 5/6 INCREASING 7/8 AT END.
SEA: ROUGH BUT VERY ROUGH OVER SOUTHEASTERN AT FIRST AND
BECOMING VERY ROUGH AT END. SW SWELL 3 TO 5 M ABATING
AT END.
VIS: BECOMING VERY POOR FROM SOUTHWEST.