Bulletinset for METAREA 7 Edition date (UTC): 2026-08-20 13:22:36 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 201330 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 20th OF AUGUST 2026 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 202200 TO 212200 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: NW 35 to 40 in the extreme east until mid-period, otherwise W to SW 35 to 40, moderating from the west from mid-period. SYNOPTIC CHART 12:00Z ===================== High 1028 hPa 33s09e. Low 988 hPa 46s08w, Low 1020 hPa 28s34e, Low 968 hPa 51s55e 1. Cold front: 28s19w 34s10w 39s07w into 46s08w 2. Cold front: 34s44e 40s52e 44s54e into 51s55e AREA FORECAST: ============== ASCENSION (06S/15S, 00E/20W): WIND : E to SE 10 to 20. VIS : Good, but moderate in showers and rain in the extreme west until mid-period. ANGOLA (06S/15S, 00E/00N): WIND : S to SE 10 to 15 but SW 05 to 10 in the east where it will become variable 05 to 10 by mid-period. VIS : Good. ST HELENA (15S/30S, 00E/20W): WIND : E to SE 05 to 15 in the north and south-west, otherwise N to NW 10 to 20. VIS : Good but moderate in showers and rain in the south until the end of the period. SEA STATE: 3.0m in the central south until mid-period, with W to SW swell. TRADES (15S/30S, 00E/WEST COAST): WIND : S to SE 10 to 20 but N to NW 05 to 15 in the extreme south-west, while variable 05 to 10 in the extreme north-east until mid- period. VIS : Good. SEA STATE: 3.0m in the south-east at first, with S swell. TRISTAN (30S/40S, 00E/20W): WIND : N to NW 20 to 30 in the extreme east at first, otherwise W to SW 15 to 25. It will become NW 15 to 25 in the extreme west from mid- period. VIS : Good, but moderate to poor in showers and rain in the extreme east at first. SEA STATE: 3.0 to 4.0m except in the extreme north-east, with W to NW swell. CAPE WEST (30S/40S, 00E/20E): WIND : S to SE 10 to 20 in the north-east, otherwise N to NW 15 to 25, reaching 30 in the south. It will become W to SW 15 to 25 from the west from mid-period. VIS : Good but moderate in showers and rain in the west, spreading to the south from mid-period, while clearing from the west towards end of the period. SEA STATE: 3.0 to 4.0m in the south, with SW swell, but W to NW in the south- west, spreading to the extreme south-east towards end of the period. CAPE EAST (32.5S/40S, 20E/50E): WIND : W to SW 15 to 25, reaching 30 in the south-east, becoming E to NE 10 to 20 in the north-west from mid-period. It will become NW 15 to 25 in the extreme south-west towards end of the period. VIS : Moderate in showers and rain in the south, while clearing from the west from mid-period, otherwise good. SEA STATE: 3.0 to 4.0m, reaching 5.0 to 5.5m in the south-east, but 6.0 to 6.5m in the extreme south-east towards end of the period, with W to SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : W 10 to 20 in the south-east at first, otherwise variable 05 to 10, but S to SE 10 to 20 in the north-west until mid-period. VIS : Good but moderate in showers and thundershowers in the east. SEA STATE: 3.0 to 3.5m in the south, reaching 4.0m in the central south and extreme south-east towards end of the period, S to SW swell. MOZAMBIQUE CHANNEL: WIND : S to SE 10 to 20. VIS : Good but moderate in showers in the north until mid-period. MADAGASCAR EAST (10S/25S, EAST COAST/55E): WIND : E to SE 10 to 20, but N to NE 05 to 15 in the south. VIS : Good but moderate in showers and rain in the north. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : NW 30 to 40 in the extreme east until mid-period, otherwise W to SW 30 to 40, moderating to 15 to 25 from the west from mid-period. VIS : Moderate to poor in showers and rain with snow showers in the south, becoming good from the west from mid-period. SEA STATE: 5.0 to 6.0m, reaching 7.0 to 8.0m in places in the west, spreading to the central and north-east from mid-period, with W to SW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) 26/08/20 AT 0600UTC AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE). PART 1: WARNING - FORCE 8 GALE OVER WAM AND AMS.- STRONG GALE FORCE 9 GALE OVER KER.- STORM FORCE 10 OVER CRO. PART 2: GENERAL SYNOPSIS, 26/08/20 AT 0000UTC - LOW-PRESSURE SYSTEM AT 982 HPA FILLING NEAR 47S/75E WITH AN ASSOCIATED COLD FRONT AXIS 32S/65E, 35S/70E, 40S/77E AND 44S/80E, MOVING RAPIDLY EASTWARDS. - HIGH-PRESSURE SYSTEM 1023 HPA NEAR 35S/55E, SHIFTING SLOWLY TOWARDS THE EAST. PART 3: FORECAST FOR 24 HOURS FROM 26/08/20 AT 0600UTC TO 26/08/21 AT 0600UTC WAM (30S/40S, 50E/65E) RAIN AND FRONTAL SHOWERS WITH THE ARRIVAL OF A NEW COLD FRONT. WIND: ANTICLOCKWISE 2/4 THEREAFTER, THEN FRESHENING NORTH-WESTERLY 6/7, LOCALLY 8, AHEAD OF A NEW COLD FRONT; BACKING SOUTH-WESTERLY 4 TO 6 BEHIND OVERNIGHT. SEA : ROUGH TO HEAVY, BECOMING HEAVY TO VERY HEAVY IN THE SOUTH-EAST. SOUTH- WESTERLY SWELL OF 2 TO 3 METRES, INCREASING TO 3 TO 4 METRES. VIS : POOR DURING RAINFALL. AMS (30S/40S, 65E/80E) RAIN AND FRONTAL SHOWERS ASSOCIATED WITH THE COLD FRONT, FOLLOWED BY A NEW FRONT TOWARDS THE END OF THE FORECAST PERIOD. WIND: NORTH-WESTERLY 5 TO 7 AHEAD OF THE COLD FRONT, LATER VEERING SOUTH- WESTERLY 5/6, LOCALLY 7/8 IN THE WAKE OF THE FRONT FROM THE SOUTH-WEST; TEMPORARILY ANTICYCLONIC 3/4 OVER THE NORTHERN PART OF THE REGION, THEN FRESHENING NORTH-WESTERLY AGAIN TO 6 TO 8 AHEAD OF A NEW FRONT. RETURNING TO SOUTH-WESTERLY 4 TO 6 IN THE REAR OVER THE EXTREME SOUTH-WESTERN PART OF THE AREA TOWARDS THE END OF THE FORECAST PERIOD. SEA : ROUGH TO VERY ROUGH FROM NORTH TO SOUTH. SOUTH-WESTERLY SWELL 3 TO 5 METRES. VIS : POOR UNDER PRECIPITATION. CRO (40S/50S, 50E/65E) RAIN AND SHOWERS ASSOCIATED WITH THE ARRIVAL OF A NEW FRONT. SNOW IN THE SOUTH. STRONG GUSTS. WIND: NORTH-WESTERLY 7/8, LOCALLY 9/10 AHEAD OF THE NEW FRONT; BACKING SOUTH WESTERLY 6 TO 8, LOCALLY 9/10 BEHIND THE FRONT, EASING WESTERLY 4 TO 6 BY THE END OF THE PERIOD. SEA : ROUGH TO VERY ROUGH. WESTERLY SWELL 3 TO 5 METRES. VIS : VERY POOR DURING RAINFALL. KER (40S/50S, 65E/80E) RAIN, FRONTAL SHOWERS AND SQUALLS WITH THE COLD FRONT CF, FOLLOWED BY A NEW FRONT TOWARDS THE END OF THE FORECAST PERIOD. SNOW OVER SOUTHERN. VIOLENT GUSTS. WIND: LOW-PRESSURE SYSTEM, FORCE 7/8, LOCALLY 9 OVER THE SOUTHERN; EASING TO FORCE 6/7 FROM THE SOUTH-WEST BEHIND THE COLD FRONT, BUT FRESHENING N FORCE 6 TO 8, LOCALLY 9, AHEAD OF A NEW FRONT BACKING FORCE 6 TO 8 BEHIND IT. SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER SOUTHERN AREA. WESTERLY SWELL 5 TO 7 METRES. VIS : VERY POOR DURING PRECIPITATION.