Bulletinset for METAREA 7 Edition date (UTC): 2026-04-17 20:47:02 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 171700 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 17TH 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 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. CAPE WEST: S to SW 35 in the south-east at first. 2. CAPE EAST: NW to W 35 to 40 in the west at first, becoming SW to S 35 in the south-west spreading eastwards by end of period. 3. MARION FORTIES EAST: NW 35 in the extreme north-west from mid-period spreading to the central and south-east by end of period. SYNOPTIC CHART 12:00Z ===================== High 1029 hPa 44s17w, High 1023 hPa 44s50e Low 1005 hPa 40s17e, Low 996 hPa 44s22e, Low 1003 hPa 34s28e 1. Cold front: 29s16e 32s18e 34s19e 39s21e into 44s22e AREA FORECAST: ============== ASCENSION (06S/15S, 00E/20W): WIND : E to SE 10 to 20. VIS : Good, but moderate in showers and thundershowers in the north until mid-period. ANGOLA (06S/15S, 00E/00N): WIND : S to SE 10 to 20, but SW 05 to 10 in the east. VIS : Good. SEA STATE: 3.0m in the south-east, until mid-period, with S to SW swell. ST HELENA (15S/30S, 00E/20W): WIND : S to SE 10 to 20 in the east, otherwise E to NE 10 to 20 reaching 25 in the south-west becoming NW 05 to 10 in the extreme south- west. VIS : Good but moderate in showers and thundershowers in the western parts becoming poor at times in the south-west. SEA STATE: 3.0 to 3.5m in the south-west and south-east at first, with NE swell in the south-west, otherwise S to SE in the south-east. TRADES (15S/30S, 00E/WEST COAST): WIND : SW 15 to 25 in the south, otherwise S to SE 10 to 20, reaching 25 in the north-east at times, moderating towards end of period. VIS : Good. SEA STATE: 3.0 to 4.0m in the southern parts, spreading to the central parts towards mid-period, with S to SW swell. TRISTAN (30S/40S, 00E/20W): WIND : Anticyclonic 05 to 10 in the central until mid-period where it will become SE 05 to 10, otherwise NE 20 to 25, reaching 30 in the south-west but S to SW 10 to 20 in the east, reaching 25 to 30 in the south-east. VIS : Good, but moderate to poor in thundershowers and rain in the west while clearing in the north-west towards end of period. SEA STATE: 3.0 to 4.0m in the west and east, reaching 4.5 to 5.0 in the extreme south-east towards end of period, with NE swell in the west, otherwise SW to S in the east. CAPE WEST (30S/40S, 00E/20E): WIND : S to SW 10 to 20 reaching 25 to 30 in the east and south, but 35 in the south-east at first, becoming W to NW 25 to 35 in the central-south towards mid-period when it will spread to the south-east. VIS : Good, but moderate to poor in thundershowers and rain in the east, and again in the central-south from mid-period spreading to the south-east by end of period. SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the central and south-east while moving eastwards it will become 4.0 to 6.0m in the south- west by mid-period, with S to SW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : N to NE 20 to 30, but NW to W 20 to 30 in the west, where it will reach 35 to 40 until mid-period, becoming SW to S 25 to 35 in the south-west spreading eastwards by end of period. It will become NW 20 to 30 in the extreme west at the end of period. VIS : Good, but moderate to poor in showers and thundershowers in the west spreading to the central parts by mid-period and again in the west at the end of the period. SEA STATE: 3.0 to 4.0m in the central and west, reaching 5.0 to 6.0 in the north-west until mid-period, with SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : E to NE 10 to 20, reaching 25 to 30 in the west until mid-period, becoming S to SW 15 to 25 in the south-west until mid-period where it will become SE 10 to 15. VIS : Good, but moderate to poor in showers and thundershowers in places in the south-west spreading to the central parts from mid- period. SEA STATE: 3.0 to 4.0m in the west, with SW swell. MOZAMBIQUE CHANNEL: WIND : Variable 05 to 10 in the central parts, otherwise E to NE 10 to 20, but S to SE 05 to 15 in the south-east from mid-period. VIS : Good. MADAGASCAR EAST (10S/25S, EAST COAST/55E): WIND : E to SE 05 to 15 but NE 05 to 15 in the south-west. VIS : Good, but moderate in showers and thundershowers in places in the north-east and south-west at times. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : N to NE 10 to 20, but NW to W 10 to 20 in the west, reaching 25 to 35 in the extreme west from mid-period spreading to the central and south-east by end of period. VIS : Good, but moderate in showers and rain in the west spreading to the south-east towards end of period when it will reach 35 in the extreme south-east. SEA STATE: 3.0 to 4.0m except in the north-east, with W to NW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) 26/04/17 AT 1600UTC AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE). PART 1: WARNING - GALE RUNNING OVER KER. PART 2: GENERAL SYNOPSIS, 26/04/17 AT 1200UTC - FLAT LOW OVER NORTHERN WAM, WITH ASSOCIATED SQUALLY WEATHER OVER EASTERN WAM - HIGH 1026 OVER AMS, SLOW-MOVING. - HIGH 1023 OVER WESTERN CRO, FORECAST 1027 OVER WESTERN KER AT END. - WAVING FRONT ALONG 43S OVER CRO AND KER AT START, DISSIPATING. PART 3: FORECAST FOR 24 HOURS FROM 26/04/17 AT 1800UTC TO 26/04/18 AT 1800UTC WAM (30S/40S, 50E/65E) SHOWERS AND SQUALLS AT TIMES THUNDERY.OVER EASTERN HALF. WIND: CLOCKWISE 3/5, GUSTS IN SQUALLS. SEA: MODERATE, LOCALLY ROUGH OVER NORTH-EASTERN AT START. VISI: VERY POOR IN PRECIPITATION. AMS (30S/40S, 65E/80E) SHOWERS AND SQUALLS AT TIMES THUNDERY OVER FAR WESTERN SOON. WIND: ANTICLOCKWISE 3/5, GUSTS IN SQUALLS OVER FAR WESTERN. SEA: MODERATE, LOCALLY ROUGH OVER FAR SOUTHEASTERN. VISI: VERY POOR IN PRECIPITATION. CRO (40S/50S, 50E/65E) FRONTAL RAIN AND SHOWERS OVER NORTHERN AT START AND FAR SOUTHWESTERN AT END. WIND: ANTICLOCKWISE 3/5, AT TIMES 6 OVER SOUTHEASTERN. INCREASING NORTHERLY 6/7 OVER FAR WESTERN AT END. SEA: MODERATE TO ROUGH FROM NORTH TO SOUTH VISI: POOR IN PRECIPITATION. KER (40S/50S, 65E/80E) FRONTAL RAIN AND SHOWERS AT START OVER NORTHERN, SHOWERS OVER SOUTHEASTERN. WIND: SW 5/6 BUT 7/8 OVER SOUTHEASTERN WITH GUSTS. BECOMING ANTICLOCKWISE 3/4 OVER NORTH-WESTERN SOON. SEA: MODERATE TO VERY ROUGH FROM NORTHWEST TO SOUTHEAST. LONG SW SWELL 4 TO 5M OVER FAR SOUTHEASTERN. VISI: POOR IN PRECIPITATION.=