WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF SEPTEMBER 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:
=======
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. ST HELENA: CYCLONIC 35 IN THE SOUTH-EAST FROM MID-PERIOD.
2. CAPE EAST: CYCLONIC 35 IN THE SOUTH-EAST.
3. MARION FORTIES EAST : NW 35 IN PLACES IN THE SOUTH BUT CYCLONIC 35
IN
THE NORTH-EAST BY THE END OF THE PERIOD.
SYNOPTIC CHART 12:00Z
=====================
HIGH 1024 HPA 32S20W, HIGH 1028 HPA 29S51E,
LOW 968 HPA 60S05E,
1. COLD FRONT: 43S14E 53S23E 60S23E 66S11E INTO 60S05E.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE TO E 10 TO 20.
VIS : GOOD.
ANGOLA (06S/15S, 00E/00N):
WIND : S TO SE 05 TO 15, BUT SW 05 TO 10 IN THE EAST.
VIS : GOOD.
ST HELENA (15S/30S, 00E/20W):
WIND : VARIABLE 05 TO 10 IN THE NORTH-EAST, OTHERWISE SE TO
E 15 TO 25 BUT CYCLONIC 20 TO 30 IN THE SOUTH-EAST
REACHING 35
FROM MID-PERIOD.
VIS : GOOD BUT MODERATE TO POOR IN SHOWERS AND THUNDERSHOWERS IN
THE SOUTH-EAST.
SEA STATE: 3.0 TO 4.0M, EXCEPT IN THE NORTH, REACHING 4.5 TO 5.0M IN
THE
SOUTH-EAST, WITH SE SWELL.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S TO SE 15 TO 25 REACHING 30, BUT VARIABLE 05 TO 10 IN THE
NORTH-WEST.
VIS : GOOD BUT MODERATE IN SHOWERS AND THUNDERSHOWERS IN THE
SOUTH
TOWARDS THE END OF THE PERIOD.
SEA STATE: 3.0 TO 3.5M IN THE SOUTH, WITH SE TO S SWELL.
TRISTAN (30S/40S, 00E/20W):
WIND : ANTICYCLONIC 05 TO 15, BUT S TO SE 20 TO 30 IN THE
NORTH-EAST.
VIS : GOOD BUT MODERATE IN SHOWERS AND THUNDERSHOWERS IN THE
NORTH-
WEST.
SEA STATE: 3.0 TO 4.0M IN THE EAST REACHING 4.5 TO 5.0M IN THE NORTH-
EAST, WITH S TO SW SWELL BUT SE SWELL IN THE NORTH-EAST.
CAPE WEST (30S/40S, 00E/20E):
WIND : ANTICYCLONIC 05 TO 15 IN THE SOUTH, OTHERWISE S TO SE 10
TO 20
REACHING 25 TO 30 IN THE NORTH.
VIS : GOOD BUT MODERATE IN SHOWERS AND THUNDERSHOWERS IN THE
NORTH
BY THE END OF THE PERIOD.
SEA STATE: 3.0 TO 4.0M, WITH SW SWELL BUT SE SWELL IN THE NORTH.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : CYCLONIC 15 TO 25 REACHING 30 TO 35 IN THE SOUTH-EAST BUT
SE
10 TO 20 IN THE WEST, BECOMING ANTICYCLONIC 05 TO 10 IN
THE
SOUTH-WEST FROM MID-PERIOD.
VIS : MODERATE TO POOR IN SHOWERS AND THUNDERSHOWERS IN THE
SOUTH-
EAST BUT IN RAIN IN PLACES IN THE WEST, OTHERWISE GOOD.
SEA STATE: 3.0 TO 4.0M, EXCEPT IN THE NORTH-EAST AT FIRST, REACHING
4.5
TO 5.0M IN THE SOUTH-EAST, WITH SW TO W SWELL.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SW 10 TO 20 IN THE EXTREME WEST AT FIRST, OTHERWISE
ANTICYCLONIC 05 TO 15 BUT NE 15 TO 25 IN THE NORTH-EAST.
VIS : GOOD BUT MODERATE IN RAIN AND SHOWERS IN THE NORTH-EAST
UNTIL
MID-PERIOD.
MOZAMBIQUE CHANNEL:
WIND : S TO SE 05 TO 15.
VIS : GOOD.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E TO SE 15 TO 25 IN THE NORTH REACHING 30 IN THE EXTREME
NORTH-WEST BUT NE 10 TO 20 IN THE SOUTH.
VIS : MODERATE IN SHOWERS AND RAIN IN PLACES.
SEA STATE: 3.0 TO 4.0M IN THE NORTH, WITH E TO SE SWELL.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W TO SW 20 TO 30 IN THE SOUTH-EAST AT FIRST, OTHERWISE NW
15
TO 25 REACHING 30 TO 35 IN PLACES IN THE SOUTH BUT
CYCLONIC 20
TO 30 IN THE NORTH REACHING 35 IN THE NORTH-EAST BY THE
END OF
THE PERIOD.
VIS : MODERATE IN SHOWERS AND THUNDERSHOWERS IN THE NORTH AND
SOUTH-
WEST SPREADING TO THE SOUTH-EAST FROM MID-PERIOD.
SEA STATE: 3.0 TO 4.0M IN THE EXTREME NORTH OTHERWISE 4.5 TO 5.5M,
REACHING 6.5 TO 7.5M IN PLACES BUT 8.0 TO 8.5M IN THE
SOUTH-
EAST AT FIRST, WITH W TO SW SWELL.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
2026/09/10 AT 0400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 OVER CRO AND KER.
PART 2: GENERAL SYNOPSIS, 26/09/10 AT 0000UTC
- WAVING COLD FRONT CF OVER CRO AND KER AREA, AXIS 40S/32E, 43S/45E,
46S/58E, 51S/63E AND MOVING EASTWARD 20/25KT.- HIGH 1034 HPA NEAR
32S/52E.
PART 3: FORECAST FOR 24 HOURS FROM 26/09/10 AT 0600UTC TO 26/09/11 AT
0600UTC
WAM (30S/40S, 50E/65E)
SCATTERED SHOWERS BUT FRONTAL RAIN AND SHOWERS UNDER CF ET END BY
SOUTHERN AREA.
WIND: ANTICLOCKWISE 3 TO 4 AT TIMES 5 OVER NORTHERN AREA, BUT W 5 TO
6
WITH GUSTS OVER SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH BUT MODERATE OVER NORTH-WESTERN AREA. LONG
SOUTH-WESTERLY SWELL 3 TO 5M.
VIS : MAINLY GOOD.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: W TO SW 5 TO 6, INCREASING LOCALLY 7 OVER SOUTHERN AREA.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH OVER SOUTHERN AREA BY LONG SW
SWELL 4 TO 5 METERS.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN, SHOWERS AND SQUALLS UNDER CF.
WIND: WESTERLY 6 TO 7, LOCALLY 8 OVER SOUTHERN. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH. LONG SW SWELL 4 TO 6 METERS.
VIS : VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN, SHOWERS AND SQUALLS UNDER CF.
WIND : WESTERLY TO SOUTH-WEST 7 TO 8. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH LOCALLY HIGH. LONG WESTERLY TO SOUTH-WEST
SWELL 4 TO 6 METERS.
VIS : POOR OR VERY POOR IN PRECIPITATION.
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