WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
05TH OF JULY 2026 AT 17:00 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 052200 TO 062200 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. TRISTAN: SE 35 in the west and north-west towards mid-period.
SYNOPTIC CHART 12:00Z
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High 1022 hPa 23s02w, High 1026 hPa 28s37e, High 1025 hPa 42s45e
Low 951 hPa 55s16e
1. Cold Front: 31s08e 35s13e 40s20e 45s27e into 55s16e
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 : Variable 05 to 10 in the east, otherwise S to SE 10 to 15.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : SE 05 to 15 in the north, otherwise NW 10 to 20 reaching
25 to 30 in the south-west.
VIS : Good but moderate to poor in showers and thundershowers in the
south-west, spreading to the south towards mid-period.
SEA STATE: 3.0 to 4.0m in the south-west towards mid-period, with NW to W
swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : NW 05 to 15 in the south-west, otherwise S to SE 10 to 20.
VIS : Good but moderate in showers and rain in the south-west until mid-
period.
TRISTAN (30S/40S, 00E/20W):
WIND : SW 10 to 20 in the south-east at first, otherwise NW 10 to 20
reaching 25 to 30 in the north-west towards mid-period, while
becoming SE 25 to 35 in the west and north-west.
VIS : Good but moderate to poor in showers and thundershowers in the
north-west, spreading to the east towards the end of the period.
SEA STATE: 3.0 to 4.0m reaching 5.0 to 6.0m in the extreme south, but in the
west towards the end of the period, with S to SW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 05 to 15 in the extreme north-east, otherwise W to NW 10
to 20 reaching 25 to 30 in the south.
VIS : Good but moderate in showers and rain in the south-east at first,
but in the south-west towards the end of the period.
SEA STATE: 3.0 to 3.5m in the southern and western halves, reaching 4.5 to
5.0m in the extreme south, with W to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 10 to 20 in the east, otherwise NW 15 to 25 reaching 30 in
the south-west towards the end of the period, but N to NE 15 to 25
in the north-west.
VIS : Good but moderate in showers and thundershowers in the east and
south-west at first.
SEA STATE: 3.0m reaching 3.5 to 4.0m in the south-west, with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SW 05 to 15 in the south-east at first, otherwise anticyclonic 05
to 15 but N to NE 15 to 25 in the west.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the east, with S to SW swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20 reaching 25 to 30 in the south-east, but variable
05 to 10 in the extreme south-west, where it will become N to NE
05 to 15 towards the end of the period.
VIS : Good but moderate in showers and rain in the northern parts.
SEA STATE: 3.0m in the south-east, with S to SE swell.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : SE 10 to 20.
VIS : Good but moderate in showers and rain in places.
SEA STATE: 3.0m in the south, spreading to the north by the end of the
period, with S swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north-east at first, otherwise W to
NW 15 to 25 reaching 30 in the south-west, spreading to the east
towards mid-period.
VIS : Good but moderate in showers and rain in the west, spreading to
the east towards mid-period.
SEA STATE: 3.0 to 4.0m in the west, spreading to the east by mid-period,
with W to NW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/07/05 AT 1400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- VIOLENT STORM FORCE 11 OVER SOUTH-EASTERN AMS AND NORTH-EASTERN KER
AT FIRST.
PART 2: GENERAL SYNOPSIS, 26/07/05 AT 1200UTC
- LOW 976 HPA NEAR 42S/76E, LEAVING KER AND AMS AT FIRST.
- HIGH 1025 HPA NEAR 42S/45E, MOVING EASTWARD.
- COLD RONT REACHING SOUTH-WESTERN CRO AT THE END.
PART 3: FORECAST FOR 24 HOURS FROM 26/07/05 AT 1800UTC TO 26/07/06
AT 1800UTC
WAM (30S/40S, 50E/65E)
FEW SHOWERS.
WIND: ANTICLOCKWISE 3 TO 5 FROM WEST TO EAST.
SEA: ROUGH TO VERY ROUGH AT FIRST BECOMING MODERATE TO ROUGH LATER.
SOUTH-WESTERLY SWELL 2 TO 4 M.
VISI : POOR IN PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL RAIN, SQUALLS AND SHOWERS OVER EASRZERN AT FIRST. SCATTERED
SHOWERS BEHIND.
WIND: CLOCKWISE 8 TO 9 OVER SOUTH-EASTERN AND REACHING 10 TO 11 AT
TIMES NEAR THE LOW. VIOLENT GUSTS. SW 3 TO 5 BEHIND SOON.
SEA: VERY ROUGH TO HIGH BECOMING VERY ROUGH SOON. SW SWELL 3 TO 5 M.
VISI: VERY POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS AND RAIN OVER WESTERN AT THE END.
WIND: S TO SW 4 TO 6 LOCALLY 7 OVER EASTERN AT FIRST VEERING NW 5 TO
7 BY WESTERN AT THE END AHEAD OF THE FRONT. GUSTS.
SEA: ROUGH TO VERY ROUGH. SOUTH-WESTERLY SWELL 2 TO 3 M.
VISI: VERY POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN, SQUALLS AND SHOWERS OVER EASTERN AT FIRST. SCATTERED
SHOWERS BEHIND.
WIND:
- NORTHERN: CLOCKWISE 8 TO 9, INCREASING 10 TO 11 NEAR THE LOW OVER
FAR NORTH-EASTERN AREA IN THE EVENING. SOUTH-WEST 4 TO 6
BEHIND.VIOLENT GUSTS.
- SOUTHERN: SETTING-UP SW 5 TO 7.
SEA: ROUGH TO VERY ROUGH IN SOUTH, VERY ROUGH TO HIGH IN NORTH,
LOCALLY VERY HIGH OVER NORTHEASTERN AT FIRST. SW SWELL 3 OR 5 M.
VISI: VERY POOR IN PRECIPITATION.=