IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 20TH OF OCTOBER 2024 AT 17:30 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:
=======
FORECAST VALID FROM 202200 TO 212200 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: SE to E 35 to 40 in the north-west towards mid-period.
2. DURBAN EAST: E to SE 35 in the north and south-west.
SYNOPTIC CHART 12:00Z
=====================
High 1026 hPa 37s41e
Low 970 hPa 57s42e, Low 998 hPa 49s64e
1. Cold Front: 28s25w 35s16w 40s11w into 45s12w 2. Cold Front: 43s35e 50s46e into 57s42e 3. Cold Front: 34s54e 40s58e into 49s64e
AREA FORECAST:
==============
CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to SW 10 to 20 in the south-east, otherwise SE to E 15 to 25
reaching 30 to 40 in the north-west towards mid-period but
variable 05 to 10 over the central parts at first.
VIS : Moderate to poor in showers and rain in places, except in the
north-east.
SEA STATE: 3.0 to 4.0m in the south-west, spreading over the central
parts towards mid-period, with SW swell, reaching 4.5 to 5.0m
in the north-west towards mid-period with E to NE swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : Variable 05 to 10 in the south-east, otherwise E to SE 15 to
25 reaching 30 to 35 in the north and south-west but NE to E
10 to 20 in the north-west.
VIS : Good, but moderate to poor in showers and rain in the west.
SEA STATE: 3.0 to 4.0m in the north and south-west, with SE swell.
MOZAMBIQUE CHANNEL:
WIND : NE 10 to 20 in the north-west, otherwise SE to E 10 to 20
reaching 25 in the south-east and north-east.
VIS : Good, but moderate to poor in showers and rain in the north
and south.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : NE 15 to 25 in the south-west, otherwise SE to E 10 to 20
reaching 25 in the north-west but NE 20 to 30 in the south-
west.
VIS : Moderate to poor in showers and rain in places.
SEA STATE: 3.0m in the south-west, with SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : SW 10 to 20 in the north, otherwise NW to W 15 to 25 reaching
30 in the south, becoming variable 05 to 10 in the north-west
towards end of period.
VIS : Good but moderate to poor in showers and rain over the central
parts, drifting to the north-east towards mid-period.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south, drifting to
the south-east towards end of period, with SW swell.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
24/10/20 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be about 40% stronger than the averages given here).
PART 1: WARNING
– Gale expected of KER.
PART 2: GENERAL SYNOPSIS, 24/10/20 AT 1200UTC
– Low 997 near 49S/64E, moving rather quickly south-eastwards, expected 988 near 54S/74E the 21 at 06 UTC.
– Cold front crossing south of CRO.
– High 1030 near 32S/82E, little change.
– Ridge gradually building from west, over WAM.
PART 3: FORECAST FOR 24 HOURS FROM 24/10/20 at 1800UTC to 24/10/21 at 1800UTC
WAM (30S/40S, 50E/65E)
Rains or showers.
WIND: Southerly 3 to 5 from west, but Northwest in far northeast.
SEA: moderate in SW swell, locally rough in south
VISI: poor in precipitations.
AMS (30S/40S, 65E/80E)
Rains or showers.
WIND: – In far northeast : Anticlockwise 3 to 5.
– Elsewhere : Northwest 5 or 6, locally 7 at first in south,
decreasing soon 3 to 5 and backing South in southwest. Gusts.
SEA : moderate, locally rough in south.
VIS : poor in precipitations.
CRO (40S/50S, 50E/65E)
Rains or scattered showers.
WIND: Westerly 5 or 6, locally 7 in south. Severe gusts.
SEA : moderate or rough, becoming rough or very rough in south,
occasionally high. Long SW swell 4 or 5 m soon in southwest.
VIS : poor or very poor in precipitations.
KER (40S/50S, 65E/80E)
Rains or showers.
WIND: Westerly 6 or 7, but Clockwise at first in far southwest,
increasing at times 8 soon. Severe gusts.
SEA : moderate or rough, crossed, becoming soon rough or very rough.
VIS : poor or very poor in precipitations.
ENDS DE CAPE TOWN RADIO/ZSC+
NNNN
