Bulletinset for METAREA 7 Edition date (UTC): 2025-12-18 05:50:55 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 171600 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 17TH OF DECEMBER 2025 AT 16:00 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 172200 TO 182200 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: Cyclonic 35 to 40 reaching 45 to 55 in the west, drifting to the east towards mid-period, becoming NW 35 to 40 in the west towards the end of the period. SYNOPTIC CHART 12:00Z ===================== High 1026 hPa 35s01w, High 1029 hPa 32s68e Low 978 hPa 45s34e 1. Cold Front: 33s34e 35s35e 40s38e into 45s34e AREA FORECAST: ============== ASCENSION (06S/15S, 00E/20W): WIND : E to SE 10 to 15. VIS : Good. ANGOLA (06S/15S, 00E/00N): WIND : S to SE 05 to 15, but SW 05 to 10 in the east. VIS : Good, but moderate in showers and thundershowers in the extreme north-east until mid-period. ST HELENA (15S/30S, 00E/20W): WIND : SE to E 05 to 15 reaching 20 in the south-east, but NE to N 05 to 15 in the south-west. VIS : Good, but moderate in light rain in the south-west. TRADES (15S/30S, 00E/WEST COAST): WIND : S to SE 10 to 20, reaching 25 to 30 in the south-east. VIS : Good. SEA STATE: 3.0 to 3.5m in the south-east, with S to SW swell. TRISTAN (30S/40S, 00E/20W): WIND : Anticyclonic 05 to 15 in the north-east, otherwise NW 10 to 20 reaching 25 to 30 in the south-west, drifting to the south towards the end of the period, while becoming S to SW 10 to 20 in the south-west. VIS : Good, but moderate in showers and rain in the south-west. SEA STATE: 3.0 to 3.5m in the south-west, with W to NW swell. CAPE WEST (30S/40S, 00E/20E): WIND : Anticyclonic 05 to 15 in the west, otherwise S to SE 10 to 20 reaching 25 in the north-east, but SW to W 10 to 20 in the southern half, reaching 25 in the south. VIS : Good, but moderate in showers and rain in the south-east at first. SEA STATE: 3.0 to 3.5m in the south-east, with SW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : NW 20 to 30 in the east, otherwise W to SW 10 to 20 reaching 25 to 30 in the central parts, drifting to the east and south-west towards the end of the period, while becoming anticyclonic 05 to 15 over the central parts. VIS : Good, but moderate to poor in showers and thundershowers in the east and south-west. SEA STATE: 3.0 to 4.0m reaching 4.5 to 5.5m in the south-west, drifting to the south-east towards mid-period, with SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : S to SE 15 to 25 in the north-west to the south, otherwise NE to E 10 to 20 reaching 25 to 30 in the north-east. VIS : Moderate to poor in showers and thundershowers in places, becoming good from the south-west towards the end of the period. SEA STATE: 3.0 to 3.5m in the west and south-west, with S to SW swell. MOZAMBIQUE CHANNEL: WIND : Variable 05 to 10 in the east, otherwise NE to E 05 to 15 reaching 20 in the west, but S to SE 15 to 25 in the south-west, spreading to the south-east towards the end of the period. VIS : Good but moderate to poor in showers and thundershowers in places over northern and central parts, spreading to the southern parts towards mid-period. MADAGASCAR EAST (10S/25S, EAST COAST/55E): WIND : E to NE 10 to 20, reaching 25 in places. VIS : Moderate to poor in showers and thundershowers in places. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : W to NW 20 to 30 in the north-east, otherwise cyclonic 30 to 40 reaching 45 to 55 in the west, drifting to the east towards mid- period, but SW 20 to 30 in the west, spreading to the east towards the end of the period, while becoming NW 30 to 40 in the west. VIS : Good but moderate to poor in showers and rain in the eastern half with possible snow-showers in the southern parts until mid- period, but in the south-west towards the end of the period. SEA STATE: 3.5 to 4.5m reaching 5.0 to 7.0m in the west, drifting to the east towards mid-period, with W to NW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) 25/12/17 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 over CRO and KER. PART 2: GENERAL SYNOPSIS, 25/12/17 AT 1200UTC - Low 976 near 44S/33E, rapidly moving south-eastward. Warm front WF 44S/56E, 46S/50E, 47S/40E, 45S/34E. Cold Front CF 45S/34E, 40S/37E, 37S/37E, 31S/30E. - High 1026 over AMS, slow-moving eastward. PART 3: FORECAST FOR 24 HOURS FROM 25/12/17 at 1800UTCto 25/12/18 at 1800UTC WAM (30S/40S, 50E/65E) Rain (CF) in south-west at end. WIND: increasing N to NW 5/6 locally 7 over southern. SEA : moderate becoming rough to very rough over southern. VISI: good becoming poor in south-west at end. AMS (30S/40S, 65E/80E) WIND: anticlockwise 3/5. SEA : moderate locally rough over far southern by SW swell 2 to 3 m. VISI: good. CRO (40S/50S, 50E/65E) Rain with squalls (WF, CF). WIND: increasing NW 7/8 backing SW 7/8 over south-western at end. Severe gusts. SEA : rough becoming very rough then high at end. SW swell 3 to 5 m over southern abating then NW to W swell 4 to 5 m over western at end. VISI: very poor in precipitation. KER (40S/50S, 65E/80E) Rain (CF) over south-western at end. WIND: Westerly 4/6 locally 7 over southern, increasing NW 7/8 at end. SEA : rough over northern, very rough over southern. W to SW swell 2 to 4 m locally 4 to 5 m over far southern. Cross sea at end. VISI: poor in precipitation.