Bulletinset for METAREA 7 Edition date (UTC): 2024-07-27 10:28:34 ============================ HIGH SEAS FORECAST ============================ FQZA31 FAPR 270830 WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 27th OF JULY 2024 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 271000 TO 281000 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 to 40 over the central parts spreading towards the east towards mid-period. 2. CAPE EAST: N to NW 35 in the extreme west at first, becoming W to SW 35 in the west by mid-period spreading towards the central parts by the end of the period. 3. DURBAN EAST: SW 35 in the extreme south-west in the second half of the period. 4. MARION FORTIES EAST: N to NE 35 north-west spreading towards the central parts by the end of the period. SYNOPTIC CHART 06:00Z ====================== High 1030 hPa 35s08w. Low 976 hPa 51s16e Low 1016 hPa 34s55e. Cold Front: 29s12e 35s18e 40s20e 45s21e 50s21e into 51s16e. AREA FORECAST: ============== ASCENSION (06S/15S, 00E/20W): WIND : E to SE 15 to 25. VIS : Good, but moderate in showers and rain the north-west. SEA STATE: 3.0 to 3.5m in the south, SW swell. ANGOLA (06S/15S, 00E/00N): WIND : S to SE 10 to 20, but SW 05 to 15 in the extreme south-east. VIS : Good. SEA STATE: 3.0 to 3.5m in the south, S to SW swell. ST HELENA (15S/30S, 00E/20W): WIND : E to SE 15 to 25, but variable 05 in the south-west. VIS : Moderate in showers in places. SEA STATE: 3.0 to 4.0m, subsiding from the west by mid-period, SW swell. TRADES (15S/30S, 00E/WEST COAST): WIND : SW 15 to 25 in the south-east in the first half of the period, otherwise S to SE 15 to 25 reaching 30 in the north-east by mid-period. VIS : Good, but moderate in showers in the extreme south, as well as poor in the extreme east by mid-period. SEA STATE: 3.0 to 4.0m, reaching 5.0 to 6.0m in the south-east, SW swell. TRISTAN (30S/40S, 00E/20W): WIND : Anti-cyclonic 05 over the central parts, otherwise S to SW 10 to 20, but N to NW 10 to 20 reaching 25 in the south-west spreading towards the south-east by the end of the period. VIS : Good, but moderate in showers and rain in the west spreading towards the east by the end of the period. SEA STATE: 3.0 to 4.0m in the east reaching 5.0 to 6.0m in the extreme east, SW swell. CAPE WEST (30S/40S, 00E/20E): WIND : W 20 to 30 in the extreme south-east at first, otherwise S to SW 20 to 30 reaching 35 to 40 over the central parts spreading towards the east towards mid-period. It will become anti- cyclonic 05 in the north-west by mid-period, as well as NW 15 to 25 in the extreme south. VIS : Good, but moderate to poor in showers and rain. SEA STATE: 5.0 to 5.5m but 6.0 to 7.0m in the south and central parts reaching 8.0 to 9.0m over the south-central parts, SW swell. CAPE EAST (32.5S/40S, 20E/50E): WIND : N to NW 10 to 20 reaching 30 to 35 in the extreme west at first, becoming W to SW 25 to 35 in the west by mid-period spreading towards the central parts by the end of the period. VIS : Moderate to poor in showers and rain in places. SEA STATE: 3.5 to 4.5m in the west, reaching 6.0 to 7.0m in the extreme west, SW swell. DURBAN EAST (32.5S/25S, EAST COAST/55E): WIND : Anti-cyclonic 05 over the central parts, otherwise W to SW 15 to 25 but N to NE 15 to 25 in the extreme west. It will become SW 25 to 35 in the extreme south-west in the second half of the period. VIS : Good, but moderate in showers and rain in places in the south. SEA STATE: 3.5 to 4.5m in the extreme south-west, SW swell. MOZAMBIQUE CHANNEL: WIND : S to SE 10 to 20, but N to NE 10 to 20 in the south-west. VIS : Good, but moderate in showers and rain in the extreme north- east. MADAGASCAR EAST: WIND : S to SE 10 to 20, but NE 10 to 15 in the south. VIS : Good in the south-east, but moderate in showers and thundershowers. MARION FORTIES EAST (40S/50S, 35E/50E): WIND : N to NE 15 to 25, reaching 30 to 35 north-west spreading towards the central parts by the end of the period. VIS : Good but moderate in showers and rain over the central parts. SEA STATE: 3.0 to 4.0m in the west, reaching 5.0 to 6.0m in the extreme west in the second half of the period, W to SW swell. AREA 2: ======= MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN) DATE: 24/07/27 AT 0500UTC AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40% STRONGER THAN THE AVERAGES GIVEN HERE.). PART 1: WARNING: GALE FORCE 8 OVER KER. PART 2: GENERAL SYNOPSYS, 24/07/27 AT 0000 UTC: - LOW 1006 HPA NEAR 33S/54E WITH ASSOCIATED COLD FRONT CF AXIS 28S/57E, 30S/60E, 33S/61E, 37S/54E SHIFTING AND FILLING SLOWLY EASTWARD EXPECTED 1016 HPA NEAR 33S/59E. - HIGH 1027 HPA AROUND 46S/53E WITH ASSOCIATED RIDGE EXTENDING THE NORTHEASTWARD. PART 3: FORECAST FOR 24 HOURS FROM 27/07/24 AT 0600 UTC TO 28/07/24 AT 0600UTC : WAM (30S/40S, 50E/65E): RAIN, SHOWERS AND SQUALLS AT TIMES STORMY. WIND: CLOCKWISE 6 TO 7 WITH STRONG GUSTS, BUT EASTERLY 4 TO 5 OVER SOUTH ZONE. SEA: MODERATE TO ROUGH. SOUTH SWELL OF 2 M ABATING BUT CROSSED WITH A STRONG WIND SEA. VISI : POOR UNDER PRECIPITATION. AMS (30S/40S, 65E/80E): SCATTERED SHOWERS, BECOMING MORE FREQUENT AND STORMY OVER WESTERN ZONE. WIND: ANTI-CLOCKWISE 3 TO 4, INCREASING SOUTHEAST 5 TO 7 OVER SOUTH-EASTERN ZONE. SEA: MODERATE TO ROUGH, BECOMING VERY ROUGH OVER SOUTHEASTERN ZONE. SW SWELL 4 TO 5 M. VISI: POOR UNDER PRECIPITATION. CRO (40S/50S, 50E/65E): RARE SHOWERS OVER FAR NORTHERN ZONE. WIND: SOUTH 4/5 OVER EASTERN ZONE BECOMING ANTICLOCKWISE 2/3 OVER WESTERN ZONE. SEA: MODERATE TO ROUGH. SOUTH SWELL 2 TO 3 M ABATING. VISI: GOOD. KER (40S/50S, 65E/80E): SHOWERS OVER EASTERN HALF OF ZONE, LOCALLY SNOWY OVER SOUTH-EASTERN ZONE. WIND: SOUTH-SOUTHWEST 5 TO 6,INCREASING 7 TO 8 OVER EASTERN ZONE. GUSTS. SEA: MODERATE TO ROUGH LOCALLY VERY ROUGH OVER EASTERN ZONE. SW SWELL 3 TO 4 M. VISI: POOR UNDER PRECIPITATION.