WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
10TH OF MARCH 2026 AT 08:30 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 101000 TO 111000 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 south-west at first and SW to W 35 to 40 in
the south-west until mid-period.
2. MARION FORTIES EAST: W to SW 35 to 40 in south and the south-east until
mid-period.
SYNOPTIC CHART 06:00Z
=====================
High 1028 hPa 36s35e
Low 980 hPa 45s19w, Low 980 hPa 53s04e
1. Cold front: 30s43w 30s31w 35s19w 40s15w 45s13w into 45s19w
2. Cold front: 24s29w 30s19w 35s14w 40s09w 45s01e into 53s04e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 05 to 15.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 10, but SW 05 to 15 in the east.
VIS : Good, but moderate to poor in showers and thundershowers in the
extreme east.
ST HELENA (15S/30S, 00E/20W):
WIND : NW 15 to 25 in the south-west, otherwise SE to E 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers in the
extreme south-west.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the north, otherwise S to SE 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers in the
extreme north-east.
TRISTAN (30S/40S, 00E/20W):
WIND : E to NE 05 to 15 in the north-east, otherwise N to NW 20 to 30
reaching 35 to 40 in the south-west at first. It will become SW to W
15 to 25 in the west during the first half of the period while
reaching 30 to 40 in the south-west until mid-period.
VIS : Good, but moderate to poor in showers and thundershowers along the
band in the north-west through to the south-central parts, drifting
to the south-east during the second half of the period.
SEA STATE: 3.0 to 4.0m except in the north-east, reaching 5.0 to 7.0m in the
south-west, with SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW to N 05 to 15 in the south-west, otherwise SE to E 15 to 25.
VIS : Good.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : E to NE 15 to 25 in the north-west, reaching 30 in places towards
mid-period, and SW to W 15 to 25 in the south-central and south-
eastern parts otherwise anticyclonic 05 to 15, but S to SE 15 to 25
in the north-east.
VIS : Good, but moderate in showers and rain in the extreme north-east.
SEA STATE: 3.0 to 4.0m in the east, with SW swell but NE swell in the north-
west.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NE 10 to 20 in the east and south-west, otherwise E to SE 20 to
30.
VIS : Moderate to poor in showers and thundershowers, but good in the
south-western parts.
SEA STATE: 3.0 to 3.5m, with S to SE swell.
MOZAMBIQUE CHANNEL:
WIND : NE 05 to 10 in the north, otherwise S to SE 10 to 20.
VIS : Good, but moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0 to 3.5m in the south, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to NE 10 to 20.
VIS : Good, but moderate to poor in showers and thundershowers in places.
SEA STATE: 3.0 to 3.5m in the south, with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 15 to 25 reaching 30 to 40 in south and the south-east until
mid-period.
VIS : Moderate in showers and rain in places at times, otherwise good.
SEA STATE: 4.0 to 5.0m, reaching 6.0 to 7.0m in the southern parts, with W to SW
swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/03/10 AT 0600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 EXPECTED OVER CRO AT FIRST.
- GALE FORCE 8 EXPECTED OVER KER SOON.
PART 2: GENERAL SYNOPSIS, 26/03/10 AT 0000UTC
- WAVING FRONT (WF) AXIS 34S/50E, 38S/65E, 44S/80E, MOVING SLOWLY.
- COLD FRONT (CF) RUNNING QUICKLY OVER CRO AND KER.
- HIGH PRESSURE AREA OVER WAM AND AMS.
PART 3: FORECAST FOR 24 HOURS FROM 26/03/10 AT 0600UTC TO 26/03/11 AT 0600UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS.
WIND : VARIABLE 2 TO 4 INCREASING W 5/6 OVER SOUTHERN AREA AT FIRST, BACKING SW
4/5 AT END. GUSTS.
SEA : BECOMING ROUGH, LOCALLY VERY ROUGH OVER FAR SOUTHERN AREA BY LONG SW SWELL
3 TO 5M.
VIS : MODERATE IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN OVER SOUTHWESTERN AREA, SCATTERED SHOWERS ELSEWHERE.
WIND : ANTICLOCKWISE 2/4, INCREASING LOCALLY E 5 OVER NORTHEASTERN AREA AND
NORTHWESTERLY 5, AT TIMES 6 LATER, OVER SOUTHERN.
SEA : MODERATE, BUT BECOMING ROUGH TO VERY ROUGH BY SOUTHWESTERN AREA AT FIRST.
ARRIVAL OF A LONG SW SWELL 3 TO 4M.
VIS : MODERATE OR POOR IN SHOWERS.
CRO (40S/50S, 50E/65E)
RAIN OR SHOWERS, INCREASING SOON OVER EASTERN AREA.
WIND: W 6/7, INCREASING 7/8 AT FIRST, THEN DECREASING GRADUALLY 5/6 BACKING SW
AT END. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH. SW SWELL 4 TO 5 M WITH HIGH WIND SEA.
VIS : VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS OVER EASTERN AREA. RAIN OR SHOWERS INCREASING SOON OVER SOUTHWESTERN.
WIND: NW 6/7, INCREASING SOON 8 BY WESTERN AREA. VIOLENT GUSTS.
SEA : BECOMING ROUGH TO VERY ROUGH OVER NORTHEASTERN, VERY ROUGH TO HIGH OVER
SOUTHWESTERN. LONG SW SWELL BETWEEN 4 TO 6 M. CROSS SEA.
VIS : POOR OR VERY POOR IN PRECIPITATION.