WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
26th OF JULY 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:
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FORECAST VALID FROM 252200 TO 2622200 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. CAPE EAST: SW to S 35 over the central parts from mid-period.
2. MARION FORTIES EAST: W to SW 10 to 20, reaching 35 in the south-east
at first.
SYNOPTIC CHART 12:00Z
=====================
High 1032 hPa 37s12w, High 1026 hPa 31s37e, High 1026 40s50e
Low 982 hPa 55s17e, Low 1002 hPa 46s39e, Low 1013 hPa 29s55e.
1. Cold Front: 42s01w 46s07e 52s17e 53s09e into 55s17e
2. Cold Front: 38s13e 40s21e 41s30e into 44s37e.
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, variable 05 in the east and central parts.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 15 to 20, but variable 05 to 10 in the north-west.
VIS : Good.
SEA STATE: 3.0m in the extreme south-west towards the end of the period, SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the north-east, otherwise E to SE 15 to 25.
VIS : Good, but moderate in showers in the west.
SEA STATE: 3.0m in the central south, with SE swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the extreme south-east, but E to NE 10 to
20, reaching 25 to 30 in places in the south-west.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anticyclonic 05 to 15 in the south-west, otherwise SE to E 15 to
25, reaching 30 in places in the north-east.
VIS : Good.
SEA STATE: 3.0 to 4.0m, with SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NW 15 to 25 in the north-east and south-east, otherwise SW to
S 15 to 25, reaching 30 to 35 over the central parts from mid-
period.
VIS : Good but moderate in showers and thundershowers across the north-
west, central parts and the south-east.
SEA STATE: 3.0 to 4.0m reaching 4.5m in the south by mid-period, with SW
swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Anticyclonic in the south-east, otherwise S to SE 15 to 25,
reaching 30 over the central parts, but N to NW 15 to 25 in the
south-west until mid-period.
VIS : Good but moderate in showers in places over south-west and in
places in the north.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the eastern parts at first,
with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25.
VIS : Good but moderate in showers and rain in places in the south-
west.
SEA STATE: 3.0 to 3.5m subsiding over the central parts from mid-period,
with S swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 5 to 10 over the central parts, otherwise S to SE 10 to
20.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the extreme south-east, with SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to NW 20 to 30 in the north-east at first and from mid-period,
otherwise W to SW 10 to 20, reaching 25 to 35 in the south-east
at first.
VIS : Good in the south-east at first, otherwise moderate in showers.
SEA STATE: 4.0 to 6.0m, reaching 6.0 to 8.0m in the south, spreading to the
south-east by mid-period, with W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/26 AT 0500UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE RUNNING OVER CRO AND EXPECTED OVER KER.
PART 2: GENERAL SYNOPSIS, 26/07/26 AT 0000UTC
- FILLING LOW WITH THUNDERSTORM 1009 HPA OVER NORTHERN WAM.
- COLD FRONT OVER CRO CROSSING CRO AND KER DURING THE PERIOD.
- COLD FRONT AXIS 49S/18E, 43S/25E, 48S/30E EXPECTED OVER CRO AT
END.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/26 AT 0600UTC TO 26/07/27 AT
0600UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND RAIN. SQUALLS OVER NORTHERN.
WIND: CLOCKWISE 4 TO 6, AT TIMES 7 OVER NORTHERN AREA AT FIRST. OVER
SOUTHERN. NW 4 TO 6 AHEAD THE FRONT BACKING S 5 TO 6 BEHIND. LATER,
BECOMING ANTICLOCKWISE 2 TO 4 , AT TIMES 5 BY WESTERN AREA. GUSTS.
SEA : ROUGH OR VERY ROUGH. SW SWELL 3 TO 4 M.
VIS : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS.
WIND: ANTICLOCKWISE OR VARIABLE 2 A 4 AT TIMES 5.
SEA : ROUGH. SW SWELL 2 TO 3 M.
VIS : GOOD.
CRO (40S/50S, 50E/65E)
RAIN OR FRONTAL SHOWERS.
WIND: NW 6 OR 7 AHEAD OF THE FRONT BACKING WESTERLY 6 TO 7 AT TIMES 8
BY WESTERN OVER SOUTHERN AND DECREASING ANTICLOCKWISE 3 TO 5 OVER
NORTHERN. LATER, INCREASING NW 6 TO 7 AT TIMES 8 AHEAD THE FRONT
BACKING SW 6 TO 7 BEHIND. SEVERE GUSTS.
SEA : VERY ROUGH TO HIGH LOCALLY VERY HIGH BY SOUTHERN AT FIRST. SW
SWELL 4 TO 6 M.
VIS : POOR TO VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
RAIN AND FRONTAL SHOWERS.
WIND: NW 6 TO 7, BACKING WESTERLY 6 TO 7 AT TIMES 8 OVER SOUTHERN
AREA AND DECREASING ANTICLOCKWISE TEMPORARILY 3 TO 5 OVER NORTHERN
LATER. SEVERE GUSTS.
SEA : ROUGH TO VERY ROUGH. HIGH OVER SOUTHWESTERN AT END. W SWELL 4
TO 5 M , INCREASING 6M OVER SOUTHWESTERN AREA AT END.
VIS : POOR TO VERY POOR IN PRECIPITATION.=