####018007417#### FQZA31 FAPR 281730 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 28th OF APRIL 2024 AT 13:30 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 282200 TO 292200 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 : W to SW 35 in places in the east at times. 2. CAPE WEST: W to NW 35 over the central parts. 3. MARION FORTIES EAST: W to SW 35 to 40 in the south, moderating in the south-west towards mid-period. SYNOPTIC CHART 12:00Z ===================== High 1024 hPa 34s35e. Low 1000 hPa 37s02w Low 1008 hPa 36s14e 1. Cold front: 23s06w 28s02w 33s01e 38s02e into 37s02w 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 05 to 15, but SW 05 to 15 in the extreme south-east at first and at the end of the period. VIS : Good. ST HELENA (15S/30S, 00E/20W): WIND : S to SW 10 to 20, reaching 25 in the south-east, but SE 10 to 20 in the north, becoming anti-cyclonic 05 to 10 in the south- west from mid-period. VIS : Good, but moderate in showers and rain in places in the south- east. SEA STATE: 3.0 to 4.0m, in the south-east, SW swell. TRADES (15S/30S, 00E/WEST COAST): WIND : S to SE 05 to 15, but W to NW 15 to 25 in the south-west, becoming SE 10 to 15 in the extreme north-west by the end of the period. VIS : Good, but moderate in rain and showers in the extreme south- west. SEA STATE: 3.0 to 4.0m, W to SW swell. TRISTAN (30S/40SE, 00E/20W): WIND : W to SW 15 to 25, reaching 35 in places in the east at times, becoming cyclonic 15 to 25 in the north-west towards the end of the period, reaching 30 in places. VIS : Good, but moderate to poor in showers and rain in the east at first as well as in the extreme west from mid-period. SEA STATE: 3.0 to 4.0m, but 5.0 to 6.0m in places in the east, subsiding over the central parts towards the end of the period, S to SE swell but SW in the north-east. CAPE WEST (30S/40S, 00E/20E): WIND : E to NE 10 to 20 in the extreme south-east at first, otherwise W to NW 10 to 20, reaching 30 to 35 over the central parts. VIS : Good, but moderate in showers and rain in the west, spreading to the south-east by the end of the period. SEA STATE: 3.0 to 4.0m in the west, W to NW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : Anti-cyclonic 05 to 15 in the central parts, spreading to the north-east by the end of the period, otherwise E to NE 15 to 25, but S to SW 15 to 25 in the extreme east. VIS : Good. SEA STATE: 3.0 to 4.0m, except in the extreme west, SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : N to NE 15 to 25 in the south-west, reaching 30 in the extreme south-west, otherwise E to SE 10 to 20. VIS : Good. SEA STATE: 3.0m in the south-eastern parts, S to SW swell. MOZAMBIQUE CHANNEL: WIND : S to SE 15 to 25. VIS : Moderate in showers and thundershowers, but good over the central parts. SEA STATE: 3.0m in the south, S to SW swell. MADAGASCAR EAST: WIND : S to SE 10 to 20. VIS : Moderate in showers and thundershowers, but good in the extreme south. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : W to SW 15 to 25, reaching 35 to 40 in the south, moderating in the south-west towards mid-period. It will become N to NW 10 to 20 in the north-west towards the end of the period. VIS : Good. SEA STATE: 3.5 to 4.5m in the extreme north, otherwise 5.5 to 6.5m, but 7.5 to 8.5m in the south, reaching 9.5 to 10.5m in the south- east from mid-period while becoming 11.0 to 11.5m in the extreme south-east, S to SW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) DATE: 24/04/28 at 1700 utc AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here). PART 1: WARNING : - Strong gale force 9 expected over CRO, locally storm force 10 at the end. - Gale force 8 expected over KER. PART 2: GENERAL SYNOPSYS, 24/04/28 at 1200 UTC : - Active cold front CF axis 52S/80E, 36S/71E, 27S/62E, moving eastern 20/25 kt. - High pressure over western WAM with ridge behind front. - Low 951 hPa near 59S/38E associated with a cold front (CG) axis 61S/34E, 61S/43E, 56S/50E, 51S/50E and moving quickly east-north- eastern 30/35 kt. - Rapid westerly flow over CRO. PART 3: FORECAST FOR 24 HOURS from 28/04/24 at 1800 UTC to 29/04/24 at 1800 UTC : WAM (30S/40S,50E/65E) :Rain or showers over the eastern area at the beginning of the period. Rares showers thereafter. WIND: S to SW 4 to 6, locally 7 over eastern area, later becoming westerly 5 to 7 over southern area and anticlockwise 3 to 5 over northern area. SEA : moderate over far northern area, very rough over far southern area, rough elsewhere. SW swell gradually increasing 2 to 4 m. VISI: poor in precipitations. AMS (30S/40S,65E/80E) :Rain and frontal showers evacuating rapidly. Scattered showers later. WIND: NW 5/6 ahead of the front, backing W to SW 5 to 6 behind it, becoming W 6/7 at the end of the period over southern area. SEA : rough, becoming very rough over the far south-western area at the end of the period. Arrival SW swell 2/3 m. VISI: poor to very poor in precipitations. CRO (40S/50S,50E/65E) :Rain and frontal showers under CG over southern area. Scattered showers elsewhere. WIND: westerly 5 to 7, soon increasing to 7 to 9, locally 10 over far southern area. Strong gusts throughout the zone. SEA: rough to very rough, soon becoming high to very high. SW swell 2 to 4 meters, increasing at the end of the period 4 to 6m. on the West zone. VIS: poor to very poor in precipitations. KER (40S/50S,65E/80E) :Rain and frontal showers under CF evacuating rapidly, then arriving from the west of CG. WIND: southerly 4/5 over eastern area and clockwise 3 to 5 over western area, then NW 6/7 locally 8 ahead of CG, backing westerly 6 to 8 behind. Violent gusts near fronts. SEA : rough, becoming very rough to high over western area at the end of the period. SW swell, 2 to 3 m. VISI: very poor in precipitations.####018005396#### FQZA81 FAPR 281730 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 28th OF APRIL 2024 AT 13:30 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 282200 TO 292200 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. MARION FORTIES EAST: W to SW 35 to 40 in the south, moderating in the south-west towards mid-period. SYNOPTIC CHART 12:00Z ===================== High 1024 hPa 34s35e. Low 1000 hPa 37s02w Low 1008 hPa 36s14e 1. Cold front: 23s06w 28s02w 33s01e 38s02e into 37s02w AREA FORECAST: ============== CAPE EAST (32.5S/40S, 20E/50E): WIND : Anti-cyclonic 05 to 15 in the central parts, spreading to the north-east by the end of the period, otherwise E to NE 15 to 25, but S to SW 15 to 25 in the extreme east. VIS : Good. SEA STATE: 3.0 to 4.0m, except in the extreme west, SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : N to NE 15 to 25 in the south-west, reaching 30 in the extreme south-west, otherwise E to SE 10 to 20. VIS : Good. SEA STATE: 3.0m in the south-eastern parts, S to SW swell. MOZAMBIQUE CHANNEL: WIND : S to SE 15 to 25. VIS : Moderate in showers and thundershowers, but good over the central parts. SEA STATE: 3.0m in the south, S to SW swell. MADAGASCAR EAST: WIND : S to SE 10 to 20. VIS : Moderate in showers and thundershowers, but good in the extreme south. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : W to SW 15 to 25, reaching 35 to 40 in the south, moderating in the south-west towards mid-period. It will become N to NW 10 to 20 in the north-west towards the end of the period. VIS : Good. SEA STATE: 3.5 to 4.5m in the extreme north, otherwise 5.5 to 6.5m, but 7.5 to 8.5m in the south, reaching 9.5 to 10.5m in the south- east from mid-period while becoming 11.0 to 11.5m in the extreme south-east, S to SW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) DATE: 24/04/28 at 1700 utc AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here). PART 1: WARNING : - Strong gale force 9 expected over CRO, locally storm force 10 at the end. - Gale force 8 expected over KER. PART 2: GENERAL SYNOPSYS, 24/04/28 at 1200 UTC : - Active cold front CF axis 52S/80E, 36S/71E, 27S/62E, moving eastern 20/25 kt. - High pressure over western WAM with ridge behind front. - Low 951 hPa near 59S/38E associated with a cold front (CG) axis 61S/34E, 61S/43E, 56S/50E, 51S/50E and moving quickly east-north- eastern 30/35 kt. - Rapid westerly flow over CRO. PART 3: FORECAST FOR 24 HOURS from 28/04/24 at 1800 UTC to 29/04/24 at 1800 UTC : WAM (30S/40S,50E/65E) :Rain or showers over the eastern area at the beginning of the period. Rares showers thereafter. WIND: S to SW 4 to 6, locally 7 over eastern area, later becoming westerly 5 to 7 over southern area and anticlockwise 3 to 5 over northern area. SEA : moderate over far northern area, very rough over far southern area, rough elsewhere. SW swell gradually increasing 2 to 4 m. VISI: poor in precipitations. AMS (30S/40S,65E/80E) :Rain and frontal showers evacuating rapidly. Scattered showers later. WIND: NW 5/6 ahead of the front, backing W to SW 5 to 6 behind it, becoming W 6/7 at the end of the period over southern area. SEA : rough, becoming very rough over the far south-western area at the end of the period. Arrival SW swell 2/3 m. VISI: poor to very poor in precipitations. CRO (40S/50S,50E/65E) :Rain and frontal showers under CG over southern area. Scattered showers elsewhere. WIND: westerly 5 to 7, soon increasing to 7 to 9, locally 10 over far southern area. Strong gusts throughout the zone. SEA: rough to very rough, soon becoming high to very high. SW swell 2 to 4 meters, increasing at the end of the period 4 to 6m. on the West zone. VIS: poor to very poor in precipitations. KER (40S/50S,65E/80E) :Rain and frontal showers under CF evacuating rapidly, then arriving from the west of CG. WIND: southerly 4/5 over eastern area and clockwise 3 to 5 over western area, then NW 6/7 locally 8 ahead of CG, backing westerly 6 to 8 behind. Violent gusts near fronts. SEA : rough, becoming very rough to high over western area at the end of the period. SW swell, 2 to 3 m. VISI: very poor in precipitations.