Bulletinset for METAREA 7 Edition date (UTC): 2026-04-12 13:04:55 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 121330 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 12TH OF APRIL 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 122200 TO 132200 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 the south-west, drifting to the south-east towards mid-period. 2. CAPE WEST: W to NW 35 in the south-west towards mid-period, spreading to the south-east towards the end of the period, while becoming SW 35 in the south-west. 3. MARION FORTIES EAST: W to SW 35 to 40 in the south-west, drifting to the south-east towards mid-period. SYNOPTIC CHART 12:00Z ===================== High 1020 hPa 30s03e, High 1017 41s48e Low 975 hPa 50s15w, Low 986 hPa 49s04e, Low 970 hPa 54s36e 1. Cold front: 34s20w 40s12w 45s09w into 50s15w 2. Cold front: 30s10w 35s01w 40s08e into 49s04e 3. Cold front: 45s27e 50s38e into 54s36e AREA FORECAST: ============== ASCENSION (06S/15S, 00E/20W): WIND : SE to E 10 to 20. VIS : Good. ANGOLA (06S/15S, 00E/00N): WIND : S to SE 05 to 15 reaching 20 in the south at first, but SW 05 to 10 in the east. VIS : Good, but moderate in showers and thundershowers in the north- east at times. ST HELENA (15S/30S, 00E/20W): WIND : S to SE 05 to 15, but variable 05 to 10 in the south-east until towards the end of the period. VIS : Good but moderate in showers and rain in the south and west. SEA STATE: 3.0m in the south and west at first, reaching 3.5m in the extreme south-west towards the end of the period, with S to SW swell. TRADES (15S/30S, 00E/WEST COAST): WIND : Variable 05 to 10 in the south-west, otherwise S to SE 10 to 20 reaching 25 in the south-east until towards mid-period, but in the north-east towards the end of the period. VIS : Good, becoming moderate in showers and rain in the south-west towards the end of the period. TRISTAN (30S/40S, 00E/20W): WIND : W to SW 15 to 25 reaching 30 to 35 in the south-west, drifting to the south-east towards mid-period. It will become anticyclonic 05 to 15 in the south-west towards the end of the period. VIS : Good, but moderate in showers and rain in the east and south- east. SEA STATE: 3.0 to 5.0m reaching 6.0 to 8.0m in the south, with W to SW swell. CAPE WEST (30S/40S, 00E/20E): WIND : S to SE 05 to 15 in the north-east, otherwise W to NW 15 to 25, reaching 30 to 35 in the south-west towards mid-period, spreading to the south-east towards the end of the period, while becoming SW 25 to 35 in the south-west. VIS : Good, but moderate to poor in showers and rain in the south and west. SEA STATE: 3.0 to 4.0m in the south and west, reaching 5.0 to 7.0m in the south-west towards the end of the period, with W to SW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : NW 05 to 15 in the north-east, otherwise W to SW 05 to 15 reaching 20 to 25 in the east towards mid-period, while becoming NE 15 to 25 in the west. VIS : Good, but moderate to poor in showers and thundershowers in the eastern parts but in the central parts until mid-period. SEA STATE: 3.0m in the extreme south-west towards the end of the period, with SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : E to SE 10 to 20 in the north, otherwise anticyclonic 05 to 15 but NE 10 to 20 in the north-west and in the south-west towards the end of the period. VIS : Moderate to poor in showers and thundershowers but good in the central and northern parts. MOZAMBIQUE CHANNEL: WIND : S to SE 05 to 15, but NE to E 05 to 15 in the south-west. VIS : Good, but moderate in showers and thundershowers in places in the northern parts. MADAGASCAR EAST (10S/25S, EAST COAST/55E): WIND : E to SE 10 to 20, but NE 05 to 15 in the south. VIS : Moderate in showers and thundershowers in places. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : W to SW 15 to 25 reaching 30 to 40 in the south-west, drifting to the south-east towards mid-period. It will become NW 15 to 25 in the west towards the end of the period. VIS : Good, but moderate in showers and rain in the east at first, but in the south-west towards the end of the period. SEA STATE: 3.0 to 4.0m in the central and southern half, reaching 6.0 to 8.0m in the south, drifting to the extreme south-east towards the end of the period, with W to SW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) 2026/04/12 AT 0500UTC AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE). PART 1: WARNING - GALE RUNNING OVER CRO AND KER. - STRONG GALE EXPECTED OVER CRO AND KER. PART 2: GENERAL SYNOPSIS, 2026/04/12 AT 0000UTC - DEEPENING LOW 1000 NEAR 44S/61E, RAPIDLY MOVING EAST-SOUTH-EASTWARD. - HIGH 1023 NEAR 33S/71E STEADILY MOVING EASTWARD. - LOW EXPECTED SOUTH OF CRO THE 13/04 AT 06UTC 968 NEAR 56S/51E. PART 3: FORECAST FOR 24 HOURS FROM 2026/04/12 AT 0600UTC TO 2026/04/13 AT 0600UTC WAM (30S/40S, 50E/65E) FRONTAL RAIN AND SHOWERS OVER SOUTHERN. SHOWERS OVER NORTH-WESTERN WIND: NORTH-WESTERLY 3/4 AT TIMES 5, BUT 5/6 AT FIRST OVER SOUTH-EASTERN AT TIMES 7. GUSTS. BECOMING SOON VARIABLE 2/3 OVER SOUTH-WESTERN AT TIMES 4. SEA : MODERATE TO ROUGH FROM NORTH TO SOUTH. VIS : POOR IN PRECIPITATION. AMS (30S/40S, 65E/80E) FEW SHOWERS. FRONTAL RAIN AND SHOWERS OVER FAR SOUTHERN LATER. WIND: ANTICLOCKWISE 3/4 OVER NORTHERN BUT INCREASING NW 5/6 AT TIMES 7 WITH GUSTS OVER SOUTHERN. SEA : MODERATE TO ROUGH. VIS : MAINLY GOOD, BUT POOR IN FRONTAL PRECIPITATION. CRO (40S/50S, 50E/65E) FRONTAL RAIN, SHOWERS AND SQUALLS OVER NORTH-EASTERN AT FIRST. FRONTAL RAIN AND SHOWERS SOON OVER FAR SOUTHERN. WIND: SW 4/5 AT TIMES 6, BUT NW 7/8 AT FIRST OVER FAR NORTH-EASTERN. BECOMING SOON ANTICLOCKWISE 3/4 OVER FAR NORTHERN, BUT WESTERLY 5/6 ELSEWHERE, INCREASING 7/8 LATER AT TIMES 9. GUSTS, LOCALLY SEVERE GUSTS. SEA : MODERATE TO ROUGH, LOCALLY VERY ROUGH AT FIRST OVER NORTH-EASTERN BY WESTERLY SWELL 4 TO 5M. BECOMING LATER VERY ROUGH DUE TO WIND OVER FAR SOUTH-WESTERN. VIS : POOR TO VERY POOR IN PRECIPITATION. KER (40S/50S, 65E/80E) FRONTAL RAIN, SHOWERS AND SQUALLS DRIFTING FROM WEST TO EAST. WIND: CLOCKWISE 6/7 AT TIMES 8, LOCALLY 9 OVER FAR EASTERN LATER, BUT VARIABLE 3/4 OVER FAR SOUTHERN AT FIRST. GUSTS, LOCALLY SEVERE GUSTS. GRADUALLY SETTING-UP SW 5/6 FROM WEST , THEN AT END ANTICLOCKWISE 3/4 OVER NORTHERN AND W 4/5 OVER SOUTHERN. SEA : ROUGH TO VERY ROUGH, LOCALLY HIGH OVER FAR EASTERN LATER. W SWELL 3 TO 5M OVER NORTHERN COMING FROM WEST. VIS : POOR TO VERY POOR IN PRECIPITATION.