IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII, EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 24th OF AUGUST 2024 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 242200 TO 252200 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: N to NE 35 to 45 over the east and central in the first
half of the period, and again in the west by the second
half of the period.
2. DURBAN EAST: N to NE 35 in the extreme west at first and in the north-
central by the second half of the period.
3. MADAGASCAR EAST: S to SE 35 in the extreme north-west as well as NE to
E 35 in the extreme south-west.
4. MARION FORTIES EAST: N to NW 35 to 40 in the first half of the period.
SYNOPTIC CHART 12:00Z
=====================
High 1027 hPa 27s11w
High 1038 hPa 41s49e
Cold Front: 37s27e 47s30e into 50s27e.
AREA FORECAST:
==============
CAPE EAST (32.5S/40S, 20E/50E):
WIND : N to NE 20 to 30 reaching 35 to 45 over the east and
central in the first half of the period, and again in the west
by the second half of the period.
VIS : Good in the east otherwise moderate in showers and rain.
SEA STATE: 4.0 to 5.0m reaching 6.5m to 7.0m in the south and central at
first as well as in the extreme west towards the end of the
period, cyclonic swell but SE in the east.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : E to SE 20 to 30 in the east at first, otherwise N to NE 15 to
25 reaching 35 in the extreme west at first and in the north-
central by the second half of the period. It will become
cyclonic to S 15 to 25 in the south-west by during the course
of the first period.
VIS : Good, but moderate in showers and rain in the east and
central.
SEA STATE: 3.5 to 4.5m reaching 6.0m in the north-east in the first, S to
SE swell.
MOZAMBIQUE CHANNEL:
WIND : S to SE 15 to 25 but NE 15 to 25 in the extreme south-west.
VIS : Good, but moderate in showers in the extreme north.
SEA STATE: 3.5 to 4.0m in the south and central reaching 4.5m in the south-
east, S to SE swell.
MADAGASCAR EAST:
WIND : S to SE 20 to 30 reaching 35 in the extreme north-west,
but NE to E 15 to 25 in the south-west reaching 35 in the
extreme south-west.
VIS : Good in the south, otherwise moderate in moderate in
showers and thundershowers.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the extreme south at first,
S to SE swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 to 40 in the first half of the
period, becoming variable 05 to 15 in the central by the
second half of the period.
VIS : Good, but moderate in showers and rain in the west at first,
spreading to the central and east in the first of the period.
SEA STATE: 4.0 to 5.0m reaching 6.5 to 8.5m in west and central spreading to
the east towards mid-period, SW swell in the east at first
otherwise NW.
AREA 2:
=======
MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/24 AT 1700 UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE STRONGER THAN AVERAGES GIVEN HERE).
PART 1: WARNING:
– GALE FORCE 8 OVER WAM, CRO AND KER.
– STRONG GALE FORCE 9 VERY LOCALLY OVER SOUTH-EAST WAM AT THE START.
PART 2: GENERAL SYNOPSYS, 24/08/24 AT 1200 UTC:
– CF COLD FRONT WITH ASSOCIATED LOW 1004 HPA NEAR 35S/70E EVACUATING EAST SOON.
– HIGH 1037 HPA NEAR 41S/48E, EXPECTED 1037 HPA NEAR 36S/60E AT THE END.
– CG COLD FRONT ARRIVING OVER SOUTH-WESTERN CRO LATER.
PART 3: FORECAST FOR 24 HOURS FROM 24/08/24 AT 1800 UTC TO 25/08/24 AT 1800 UTC :
WAM (30S/40S, 50E/65E):
SCATTERED SHOWERS LOC THUNDER IN THE NORTH-EAST.
WIND : SOUTH-EASTERLY WIND 4 TO 7 FROM SOUTH-WEST TO NORTH-EAST, BECOMING ANTICLOCKWISE 3/5 FROM SOUTH-WEST ZONE DURING THE DAY.
SEA: VERY ROUGH TO HIGH, BECOMING ROUGH TO VERY ROUGH. SOUTHERLY TO SOUTH-WESTERLY SWELL 4/6M, ABATING 2/4M LATER.
VISI : POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E):
RAIN, SQUALLS AND FRONTAL SHOWERS LOC STORM ( CF ) WIND : SOUTHERLY TO SOUTHEASTERLY 6/7, DECREASING 4/6 DURING THE DAY, BUT AT FIRST WESTERLY TO NORTHWESTERLY 6/7 LOCALLY 8 WITH STRONG GUSTS OVER THE NORTHEAST QUARTER AND CLOCWIZE 7/8 LOCALLY 9 OVER THE SOUTHEAST QUARTER.
SEA: ROUGH TO VERY ROUGH. SOUTH-WESTERLY SWELL, THEN SOUTHERLY 2/4M.
VISI : POOR UNDER PRECIPITATION.PITATIONS.
CRO (40S/50S, 50E/65E):
RAIN, FRONTAL SHOWERS AND SQUALLS OVER SOUTH-WEST AREA LATER CG.
WIND: NORTH HALF: ANTICYCLONIC 3/5, BECOMING LATER NW 5/6 LOCALLY 7 OVER FAR SOUTHWEST. SOUTH HALF: WESTERLY 5/6, LOCALLY 7, INCREASING NW 6/7 WITH STRONG GUSTS DURING THE DAY WITH CG, TEMPORARILY REACHING 8 OVER FAR SOUTHWEST, DECREASING W 4/6 OVER FAR W EST BEHIND CG.
SEA: ROUGH TO VERY ROUGH, BECOMING VERY ROUGH TO HIGH OVER SW QUARTER LATER. SOUTH-WESTERLY SWELL 3/4M THEN WESTERLY SWELL 4/5M IN THE SOUTH-WEST WITH CG.
VISI : GOOD.
KER (40S/50S, 65E/80E):
SHOWERS, LOC SQUALLS TO THE NORTH (SNOW TO THE SOUTH) WIND : SOUTHERLY 6/7, BECOMING SOON SW 6/7, INCREASING LATER 7/8 OVER EAST ZONE.
SEA : VERY ROUGH, BECOMING LATER VERY ROUGH TO HIGH OVER EAST ZONE. SOUTHWESTERLY SWELL 2/4M.
VISI : POOR WITH PRECIPITATION.
ENDS
THIS IS CAPE TOWN RADIO
NNNN
