WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
09TH OF JULY 2026 AT 17:25 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 092200 TO 102200 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: Cyclonic 35 the central parts towards the end of the period.
2. CAPE EAST: W to SW 35 in the south-central from mid-period
3. MARION FORTIES EAST: W to SW 35 to 45 in the east at first and
35 to 45 over towards mid-period west, drifting to
the north-east after mid-period.
SYNOPTIC CHART 12:00Z
=====================
High 1019 hPa 20s04w, High 1035 hPa 33s77e
1. Cold Front: 17s25w 21s21w 27s19w 30s21w into 31s27w.
2. Cold Front: 41s18e 37s17e 35s11e into 37s11e.
3. Cold Front: 36s33e 37s38e 40s43e 44s44e into 45s41e.
4. Cold Front: 33s43e 39s54e 40s43e 48s64e into 54s67e.
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
SEA STATE: 3.0m in the south-west and central except in the north-east
with S to SW swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 15 but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : W to NW 15 to 25 reaching 30 in places in the west and
central parts, spreading to the south-east, otherwise anticyclonic
05 to 15 in the east.
VIS : Good but moderate to poor in showers and thundershowers in the
west spreading to the south-east towards mid-period.
SEA STATE: 3.0 to 4.0m in the south-west, with W to NW swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20 but variable 05 to 10 in the south-west.
VIS : Good.
TRISTAN (30S/40S, 00E/20W):
WIND : Cyclonic 15 to 25 in the south-west at first and north-west
spreading to the central parts, where it will reach 35 in places
towards the end of the period, otherwise NE to E 15 to 25, it will
become W to SW 15 to 25 in the west towards mid-period.
VIS : Moderate to poor in showers and thundershowers in the west and
Central spreading to the east, otherwise good.
SEA STATE: 3.0 to 4.0m, subsiding in the north-east and in places in the west
from mid-period, with W to NW swell in the northern half but E to
SE swell in the southern half.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 in the east, otherwise E to NE 10 to 20
reaching 25 in the south-west becoming variable 05
to 10 in the north-west towards mid-period.
VIS : Good but moderate in showers and rain in the west but clearing
after mid-period.
SEA STATE: 3.0 to 4.0m but moderating in the north-west towards the end of
the period, reaching 4.5 to 5.0m in the south-east until mid-
period, with SW to S swell but NE swell in the south-west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the south-central from mid-
period becoming S to SE 10 to 20 in the west towards mid-period.
VIS : Moderate in showers and rain at first, clearing towards after mid-
period becoming good over the central by the end of the period.
SEA STATE: 4.0 to 5.0m, reaching 6.0 to 7.0m in the south and central until
mid-period, with W to SW swell. It will become 3.0 to 3.5m in the
extreme west by the end of the period.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 10 to 20 in the east otherwise W to SW 10 to 20, but
variable 05 to 10 in the north spreading to the central parts,
while becoming NW 05 to 15 in the north-west towards mid-period.
VIS : Moderate in showers and rain in the west but moderate in
showers and thundershowers in places in the central and south-east
at first.
SEA STATE: 3.0 to 4.0m in the south, spreading to the central and northern
parts towards mid-period, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the central and south but S to SE 10 to 15 in
the north and east from mid-period.
VIS : Good but moderate in showers and rain in places in the north and
central parts.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25 in the north, otherwise NE to N to 10 to 20 but
variable 05 to 10 in the central-west.
VIS : Moderate in showers and rain in the north and in places in the
south.
SEA STATE: 3.0m in the north, with S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : W to SW 25 to 30, reaching 35 to 45 in the east until at first and
35 to 45 over west drifting to the north-east after mid-period.
VIS : Moderate in showers and rain but poor in snow-showers in
the south.
SEA STATE: 4.0 to 4.5m in the south-east until mid-period, otherwise 5.0 to
6.0 reaching 7.0m in the north at first, with W to SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
26/07/09 AT 1700UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
GALE OVER WAM AT FIRST AND OVER KER
SEVERE GALE OVER CRO
PART 2: GENERAL SYNOPSIS, 26/07/09 AT 1200UTC
HIGH 1035 HPA NEAR 33S/78E, BUILDING AND MOVING SLOWLY EASTWARD.
LOW 955 HPA NEAR 53S/63E, MOVING EAST-SOUTHEAST, FORECAST TO BE AT
56S/79E ON THE 10TH AT 00Z.
COLD FRONT (CF) CENTERED AT 51S/71E, 45S/65E, AND 35S/47E, MOVING
SLOWLY EASTWARD.
LOW 980 HPA NEAR 47S43E, MOVING EAST, FORECAST TO BE AT 47S52E ON
THE 10TH AT 00Z.
COLD FRONT CG WITH AXIS AT 46S/44E, 41S/44E, 38S40E, MOVING
EAST-SOUTHEAST AT 40 KNOTS
PART 3: FORECAST FOR 24 HOURS FROM 26/07/09 AT 1800UTC TO 26/07/10
AT 1800UTC
WAM (30S/40S, 50E/65E)
RAIN AND FRONTAL SHOWERS ASSOCIATED WITH CF.
WIND :
IN THE EASTERN HALF: NORTH TO NORTHWEST 5 TO 7, LOCALLY 8 NEAR THE
FRONT AT THE START OF THE PERIOD, DECREASING 4 TO 6 BY THE END OF
THE PERIOD.
IN THE WESTERN HALF: NORTHWEST TO WEST 5 TO 7, DECREASING 4 TO 5,
THEN INCREASING 5 TO 6 IN THE SOUTHWEST BY THE END OF THE PERIOD.
SEA : LOCALLY MODERATE IN THE NORTH AT FIRST, BECOMING ROUGH;
OTHERWISE, ROUGH TO VERY ROUGH FROM NORTH TO SOUTH, LOCALLY
HIGH IN THE FAR SOUTH. SOUTHWEST SWELL 1.50 M TO 5 M FROM
NORTH TO SOUTH.
VISIBILITY: POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E)
SCATTERED SHOWERS BECOMING MORE FREQUENT IN THE SOUTHWEST.
WIND : CLOCKWISE 3 TO 4 IN THE NORTHEASTERN PART OF THE AREA ,
ELSEWHERE, NORTH TO NORTHWEST 4 TO 6 FROM NORTH TO SOUTH,
LOCALLY REACHING 7 IN THE SOUTHWESTERN PART OF THE AREA.
SEA : MODERATE TO ROUGH FROM NORTH TO SOUTH. SOUTHWEST SWELL 1.50M ET
3M FROM NORTH TO SOUTH, LOCALLY 4 METERS.
VISIBILITY: GOOD BECOMING POOR UNDER SHOWERS IN THE SOUTHWEST
CRO (40S/50S, 50E/65E)
HEAVY RAIN AND THUNDERY SHOWERS WITH CF AND CG.
WIND : NORTHWEST 7 TO 9, LOCALLY 10/11 AHEAD OF CF, ABATING WEST 6
TO 8 BEHIND IT, AND LOCALLY 5 TO 7 OVER SOUTHERN AREA AT THE END
OF THE FORECAST PERIOD. VIOLENT GUSTS.
SEA : VERY ROUGH TO HIGH. WEST SWELL 3 TO 5 METERS, LOCALLY 7 METERS
IN THE SOUTHEAST AT FIRST.
VISIBILITY: VERY POOR UNDER PRECIPITATION.
KER (40S/50S, 65E/80E)
HEAVY RAIN AND THUNDERY SHOWERS WITH CF AND CG.
WIND : NORTHWEST 6 TO 7 LOCALLY 8, WITH STRONG GUSTS; TEMPORARILY 4
TO 5 IN THE SOUTHERN PART OF THE AREA.
SEA : VVERY ROUGH TO HIGH. WEST SWELL 4 TO 6 M.
VISIBILITY: VERY POOR UNDER PRECIPITATION.=380