Bulletinset for METAREA 7 Edition date (UTC): 2026-04-18 09:53:55 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 180830 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 18TH OF APRIL 2026 AT 08:30 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 181000 TO 191000 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: NW 35 in the south-east, drifting to the east from late afternoon, but W to SW 35 in the south-west from the afternoon, spreading to the central parts from mid-period. 2. CAPE EAST: W to NW 35 in places in the west and central parts at first, as well as extreme west from the evening. 3. MARION FORTIES EAST: N to NW 35 in the central and northern parts, drifting to the south-east from the evening until tomorrow morning. SYNOPTIC CHART 06:00Z ===================== High 1028 hPa 50s22w, High 1024 hPa 45s60e Low 984 hPa 51s14e, Low 988 hPa 43s30e 1. Cold Front: 39s02w 40s07e 44s14e 49s17e into 51s14e 2. Cold Front: 31s32e 37s34e 41s33e into 43s30e 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 10 to 20, but SW 05 to 10 in the east. VIS : Good. ST HELENA (15S/30S, 00E/20W): WIND : N to NE 15 to 25 in the south-west, otherwise E to SE 10 to 20. VIS : Moderate in showers and thundershowers in the western parts, but poor at times in the south-west, otherwise good. SEA STATE: 3.0m in the south-west at first, with NE swell. TRADES (15S/30S, 00E/WEST COAST): WIND : SW 10 to 20 in the southern parts, but variable 05 in the south- east at first, otherwise S to SE 10 to 20, reaching 25 to 30 in the north-east. VIS : Good. SEA STATE: 3.0 to 3.5m in the east and south until mid-period, as well as in the south by the end of the period, with SW swell. TRISTAN (30S/40S, 00E/20W): WIND : S to SW 15 to 25 in the eastern parts, but E to NE 20 to 30 in the west, it will become light and variable in the north-west tomorrow morning, otherwise anti-cyclonic 05 to 15. VIS : Good, but moderate to poor in showers and thundershowers in the west. SEA STATE: 3.0 to 4.0m in the west and east, reaching 4.5 to 5.0 in the extreme south-east, with NE swell in the west, otherwise S to SW in the east. CAPE WEST (30S/40S, 00E/20E): WIND : NW 20 to 30 in the east and south-eastern parts, reaching 35 in the south-east, drifting to the east from late afternoon, otherwise, W to SW 15 to 25, reaching 30 to 35 in the south-west from the afternoon, spreading to the central parts from mid- period. VIS : Moderate in showers and rain in places, but poor in showers and thundershowers in the south-east, spreading to the east from mid- period. SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south and south-west, spreading to the central and eastern parts from mid-period, with SW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : W to NW 15 to 25, reaching 30 to 35 in places in the west and central parts at first, as well as extreme west from the evening. It will become anti-cyclonic 05 to 15 in the north and central parts from the evening, drifting to the east from tomorrow morning. VIS : Good, but moderate to poor in showers and thundershowers in the central parts, drifting to the east from the evening while clearing tomorrow morning, but moderate in showers and rain in the west. SEA STATE: 3.0 to 4.0m in the central and west, reaching 5.0 to 6.0 in places in the west during the first half of the period, as well as south-west from mid-period, with W to SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : Cyclonic 20 to 30 in the west at first, otherwise variable 05 to 10. It will become N to NE 15 to 25 in the south-west from mid- period. VIS : Good, but moderate to poor in showers and thundershowers in places in the south-west. SEA STATE: 3.0 to 4.0m in the south-west, with SW swell. MOZAMBIQUE CHANNEL: WIND : Variable 05 to 10 in the central and south-eastern parts, otherwise, E to NE 05 to 15. VIS : Good. MADAGASCAR EAST (10S/25S, EAST COAST/55E): WIND : E to NE 05 to 15 in the south, otherwise E to SE 05 to 15. VIS : Good, but moderate in showers and thundershowers in places in the north. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : N to NW 15 to 25, reaching 30 to 35 in the central and northern parts, drifting to the south-east from the evening until tomorrow morning. It will become W to SW 20 to 30 in the west and south- west from mid-period. VIS : Good, but moderate to poor in showers and thundershowers in the west and southern parts, spreading to the east from mid-period, while clearing from the west and south. SEA STATE: 3.0 to 4.0m except in the north-east, reaching 4.5 to 5.0m in the south-east from mid-period, with W to NW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) 26/04/18 AT 0600UTC AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE). PART 1: WARNING - GALE RUNNING OVER SOUTH-EAST KER. PART 2: GENERAL SYNOPSIS, 26/04/18 AT 0000UTC - HIGH 1026 HPA NEAR 34S/74E, ALMOST STATIONARY. - HIGH 1026 HPA NEAR 45S/57E MOVING EASTWARD. - LOW 1014 HPA AROUND 35S/56E WITH ASSOCIATED STORM FRONT OVER EAST WAM. - FRONT CG ARRIVING ON WEST CRO AT THE END. PART 3: FORECAST FOR 24 HOURS FROM 26/04/18 AT 0600UTC TO 26/04/19 AT 0600UTC WAM (30S/40S, 50E/65E) SHOWERS AND SQUALLS AT TIMES THUNDERY.OVER EASTERN HALF. WIND : VARIABLE CLOCKWISE 2/4, BUT NORTHERLY 4/5 DURING THE DAY OVER EAST WITH THE STORMY FRONT, GUSTS UNDER GRAINS. SEA : MODERATE. VIS : VERY POOR IN PRECIPITATION. AMS (30S/40S, 65E/80E) SHOWERS AND SQUALLS AT TIMES THUNDERY OVER FAR WESTERN SOON. WIND : VARIABLE ANTICLOCKWISE 3/5, SETTLING NORTHERLY 4/5 LATER ON THE WEST WITH STORMY FRONT, GUSTS UNDER GRAINS. SEA : MODERATE, LOCALLY ROUGH OVER FAR SOUTHEASTERN. VIS : VERY POOR IN PRECIPITATION. CRO (40S/50S, 50E/65E) FRONTAL RAIN AND SHOWERS OVER WESTERN AT END. WIND : VARIABLE ANTICLOCKWISE 3/5 AT FIRST, SETTLING SOON BY WEST NORTHERLY TO NORTHWEST 4 TO 7 FROM NORTH TO SOUTH WITH THE FRONT, VIOLENT GUSTS IN THE SOUTH. SEA : MODERATE IN NORTH AND ROUGH TO LOCALLY VERY ROUGH IN SOUTH. WESTERLY 2/3M IN SOUTH. VIS : POOR IN PRECIPITATION. KER (40S/50S, 65E/80E) SCATTERED SHOWER. WIND : SOUTHWESTERLY 5/6, REACHING 7/8 IN THE SOUTHEAST. GRADUALLY BECOMING ANTICLOCKWISE 3/5 BY THE WEST, INCREASING NORTHWEST 5/6 OVER FAR SOUTHWEST AT END. SEA : MODERATE TO VERY ROUGH FROM NORTHWEST TO SOUTHEAST. SW SWELL 2/3M. VIS : POOR IN PRECIPITATION.