WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19th OF JULY 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 192200 TO 202200 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:
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1. MARION FORTIES EAST: N to NW 35 at times in places except in the
north-east.
SYNOPTIC CHART 12:00Z
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High 1030 hPa 30s22w, High 1021 hPa 44s40e, High 1016 hPa 20s39e
Low 1005 hPa 39s26e, Low 982 hPa 50s09e
1. Cold Front: 38s10w 45s02w 49s09w into 49s04w
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SW 05 to 10 in the east, otherwise SE to S 05 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : Variable 05 to 10 in the north-east, otherwise S to SE 10 to
20, reaching 25 in some places over the central and north-
western parts.
VIS : Good but moderate in showers and thundershowers in the south-
east.
SEA STATE: 3.0m in the central and north-western parts, with S to SE
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : Variable 05 to 10 in the south-west, otherwise S to SE 05 to
15.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Anti-cyclonic 05 to 15 in the extreme north until mid-period,
otherwise NW to W 15 to 25, reaching 30 in the extreme south-
west until mid-period.
VIS : Good but moderate in showers and rain over the southern half. SEA STATE: 3.0 to 4.0m in the southern half spreading to the north by
mid-period, with W to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : Anti-cyclonic 05 to 15 in the north, otherwise W 15 to 25
reaching 30 in the extreme south and south-east until mid-
period.
VIS : Good but moderate in showers and rain in the south.
SEA STATE: 3.0 to 4.0m in the south, reaching 4.5m at times with W to SW
swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 in the east, but anti-cyclonic 05 to 15 in
the west, otherwise NE to N 15 to 25 reaching 30 at times in
the central south.
VIS : Good but moderate to poor in showers and thundershowers in
places over the central parts and the extreme north.
SEA STATE: 3.5 to 4.5m, with S to SW swell over the eastern half
otherwise SE to E.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the east but S to SW 20 to 30 in the
extreme south-west, otherwise W to SW 15 to 25 becoming S to
SW 10 to 20.
VIS : Good but moderate to poor in showers and thundershowers over
the central parts from the mid-period
SEA STATE: 3.0 to 4.0m, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : N to NW 05 to 15 in the south-west, otherwise variable 05 to
10.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : Variable 05 to 10.
VIS : Good.
SEA STATE: 3.0m in the south, with a SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anti-cyclonic 05 to 15 in the north-east, otherwise N to NW 15
to 25 reaching 30 to 35 in the south-west spreading to the
south-east from mid-period.
VIS : Good but moderate in showers and rain in the south-west
spreading to the north-west by the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5 to 5.0m in the south-west from mid-
period, with S to SE swell but NW swell in the south-west
spreading to the south-east by mid-period.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/19 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE FORCE 8 ALL OVER THE AREAS.
PART 2: GENERAL SYNOPSIS, 26/07/19 AT 1200UTC
- LOW 982 NEAR 41S/59E MOVING SOUTH-EASTWARD, EXPECTED 987 HPA NEAR
44S/68E AT END.
- HIGH 1022 HPA NEAR 37S/46E AT END WITH A RIDGE EXTENDING
SOUTH-EASTWARDS
PART 3: FORECAST FOR 24 HOURS FROM 26/07/19 AT 1800UTC TO 26/07/20
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND SQUALLS OVER SOUTHERN.
WIND: CLOCKWISE 5 TO 6, INCREASING 7 TO 8 OVER SOUTH-EASTERN WITH
GUSTS, SETTING-UP SOUTHERLY 3 TO 5 BEHIND BY WESTERN LATER.
SEA : VERY ROUGH OR HIGH BECOMING ROUGH TO VERY ROUGH SOON. CYCLONIC
SWELL 3 TO 5 M DECREASING.
VISI: VERY POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS.
WIND: NORTHERLY 5 TO 6 SETTING-UP NORTH-WEST SOON AND INCREASING 7 TO
8 OVER SOUTH-WESTERN. WEST 6 TO 7 BY WESTERN AT END.
SEA : MODERATE TO ROUGH BECOMING VERY ROUGH TO HIGH BY WESTERN SOON.
ARRIVAL OF WEST SWELL 3 TO 4 M.
VISI: POOR OR VERY POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
SHOWERS AND SQUALLS.
WIND : CLOCKWISE 7 TO 8 WITH GUSTS, SETTING-UP SOUTHERLY 4 TO 5
BEHIND LATER AND NORTH-WEST 5 TO 6 BY SOUTH-WESTERN AT END.
SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER NORTHERN. CYCLONIC SWELL
3 TO 4 M.
VISI: POOR OR VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
SHOWERS AND SQUALLS.
WIND : BECOMING CLOCKWISE 7 TO 8 NY NORTH-WESTERN WITH GUSTS,
REACHING ALL THE RAEA AT END WITH SOUTH-EAST 6 TO 7 OVER SOUTHERN.
SEA : ROUGH TO VERY ROUGH, BECOMING HIGH BY NORTH-WESTERN SOON.
SOUTH-WESTERLY SWELL 3 M IN THE SOUTH THEN CYCLONIC SWELL 4 TO 5 M BY
NORTH-WESTERN LATER.
VISI: VERY POOR IN PRECIPITATION.