WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
19TH OF APRIL 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:
=======
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:
====================
1. CAPE WEST: W to SW 35 in the east and south-east in the first half of the
period, but over the southern half from mid-period.
2. CAPE EAST: N to NE reaching 35 in the central and southern parts, and W
to SW 35 in the western half, becoming NW 35 in the south-west
towards the end of the period.
3. DURBAN EAST: SW 35 in the extreme south-west, but N to NE 35 in the west
and central south in the first half of the period.
4. MARION FORTIES EAST: N to NW 35 in places at times.
SYNOPTIC CHART 12:00Z
=====================
High 1028 hPa 46s10w, High 1028 hPa 40s73e
Low 1004 hPa 42s27w, Low 990 hPa 40s22e
Low 985 hPa 51s24e, Low 972 hPa 56s57e
1. Cold Front: 33s16w 40s20w 45s26w into 42s27w
2. Cold Front: 28s11e 35s21e 40s25e into 40s22e
3. Cold Front: 42s27e 46s31e 50s29e into 51s24e
4. Cold Front: 40s50e 45s57e 45s53e 50s66e 55s70e into 56s57e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : E to SE 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 10 to 20, but SW 05 to 10 in the east.
VIS : Good.
ST HELENA (15S/30S, 00E/20W):
WIND : N to NE 15 to 25 in the south-west, otherwise E to SE 10 to 20. VIS : Good, but moderate in showers and thundershowers in the south-
western parts.
SEA STATE: 3.0m in the south-east, with SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : SW 10 to 20 in the south-eastern parts during the first half of
the period, otherwise S to SE 10 to 20, reaching 25 in the north-
east.
VIS : Good.
SEA STATE: 3.0 to 4.0m in the south, reaching 4.5m in the south-east, with S
to SW swell.
TRISTAN (30S/40S, 00E/20W):
WIND : S to SW 15 to 25 in the eastern parts, but N to NE 20 to 30 in
the west, otherwise anti-cyclonic 05 to 15.
VIS : Good, but moderate to poor in showers and thundershowers in the
west.
SEA STATE: 3.0m in the west with NE swell but 3.0 to 4.0m in the extreme
east, with S to SW in the east.
CAPE WEST (30S/40S, 00E/20E):
WIND : W to SW 15 to 25 reaching 30 to 35 in the east and south-
east in the first half of the period, but over the southern half
from mid-period.
VIS : Good, but moderate to poor in showers and thundershowers in east
and south-eastern parts.
SEA STATE: 4.0 to 6.0m in the east and southern parts, but 3.0 to 3.5m,
in the north-western parts, with S to SW swell.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 15 to 25 reaching 30 to 35 in the central and
southern parts, otherwise W to SW 30 to 35, becoming NW 30 to 35
in the south-west towards the end of the period.
VIS : Moderate to poor in showers and thundershowers.
SEA STATE: 3.0 to 4.0m in the east and central parts, with NW swell, but
5.0 to 7.0m in the west, north-west and south-western parts,
drifting to the central parts during the second half of the
period, with W to SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : SW 30 to 35 in the extreme south-west, otherwise, N to NE 15 to
25, reaching 30 to 35 in the west and central south in the first
half of the period.
VIS : Good, but moderate in showers and thundershowers in the south-
west by mid-period.
SEA STATE: 3.0 to 3.5m in the south-west, reaching 4.0 to 4.5m from mid-
period, with SW swell.
MOZAMBIQUE CHANNEL:
WIND : Variable 05 to 10 in the central and south-eastern parts,
otherwise, E to NE 05 to 15.
VIS : Good.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to NE 05 to 15 in the south, otherwise E to SE 10 to 20.
VIS : Good, but moderate in showers and thundershowers in places in the
north.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 15 to 25, reaching 30 to 35 in the west and south-west as
well as the central northern parts, drifting to the east and
north-eastern parts.
VIS : Moderate to poor in showers and thundershowers at times, clearing
from the west towards the end of the period.
SEA STATE: 3.0 to 4.0m, reaching 4.5m in the north and north-western parts,
with W to NW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA
ACK (AMSTERDAM-CROZET-KERGUELEN)
26/04/19 AT 1400UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
- GALE TO STRONG GALE EXPECTED OVER SOUTHEASTERN KER LATER.
PART 2: GENERAL SYNOPSIS, 26/04/19 AT 1200UTC
- COLD FRONT FROM NORTH-WESTERN CRO TO SOUTH-EASTERN CRO AT FIRST,
MOVING EASTWARD QUICKLY.
- CONVERGENCE LINE WITH SQUALLS BETWEEN EASTERN WAM AND WESTERN AMS.
- HIGH AREA OVER AMS AND WAM WITH HIGH 1029 NEAR 40S/76E, MOVING
SLOWLY EAST-NORTH-EASTWARD.
PART 3: FORECAST FOR 24 HOURS FROM 26/04/19 AT 1800UTC TO 26/04/20
AT 1800UTC
WAM (30S/40S, 50E/65E)
SHOWERS AND SQUALLS OVER EASTERN.
WIND: VARIABLE 3 TO 4 SETTING UP N 4 TO 5 OVER WESTERN AT THE END.
GUSTS IN SQUALLS OVER EASTERN.
SEA: MODERATE.
VISI: POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E)
SHOWERS AND SQUALLS AT TIMES THUNDERY OVER WESTERN. FRONTAL SHOWERS
OVER NORTH-EASTERN LATER.
WIND: ANTICLOCKWISE 2 TO 4 INCREASING NW THEN W 4/5 OVER SOUTHERN
AREA LATER. GUSTS IN SQUALLS.
SEA: MODERATE, LOCALLY ROUGH OVER FAR EASTERN BY SOUTH SWELL 2 TO 3
M.
VISI: POOR IN PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL RAIN AND SHOWERS MOVING EASTWARD.
WIND: WESTERLY 4 TO 6 BEHIND THEN DECREASING ANTICLOCKWISE 2 TO 4
OVER NORTHERN SOON THEN GENERALIZING LATER. SETTING UP N 5 TO 6
LOCALLY 7 BY WESTERN AT THE END.
SEA: MODERATE TO ROUGH FROM NORTH TO SOUTH, LOCALLY VERY ROUGH OVER
FAR SOUTHERN. W SWELL 2 TO 3 M.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL RAIN AND SHOWERS MOVING EASTWARD.
WIND: WESTERLY 5/6 LOCALLY 7 FROM NORTH TO SOUTH, REACHING
TEMPORARILY 8 TO 9 WITH SEVERE GUSTS IN SOUTHERN LATER.
SEA: MODERATE TO VERY ROUGH FROM NORTH TO SOUTH, TEMPORARILY HIGH
OVER THE FAR SOUTH-EASTERN LATER. SW SWELL 2 TO 3 M, LOCALLY 4 M OVER
SOUTHERN, ABATING.
VISI: POOR IN PRECIPITATION.