Bulletinset for METAREA 10 Edition date (UTC): 2025-08-21 00:08:41 ============================ HIGH SEAS FORECAST WESTERN ============================ FQAU23 AMMC 202100 IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 20 August 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Storm Force Wind Warning 2. Melbourne Storm Force Wind Warning 6. Melbourne Gale Warning 4. Part 2 Situation at 201800 UTC Cold front [1] near 41S106E 45S110E to low [1] 977hPa near 48S106E. Forecast near 38S126E 45S131E to low [1] 980hPa near 49S128E at 211800UTC, then exiting east of the area. Cold front [2] near 41S125E 47S124E to low [2] 960hPa near 50S121E. Forecast exiting east of area after 210000UTC, Trough forecast developing near 46S103E 50S103E at 211200UTC, near 46S116E 50S116E at 220000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. South of line 43S080E 34S116E 37S129E, outside warning areas: Westerly quarter winds, shifting northwesterly quarter east of cold fronts/trough and shifting southwesterly quarter west of cold fronts/trough. Winds turning clockwise within 180nm of lows. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell, increasing to moderate to heavy swell south of 23S. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of cold fronts, troughs and lows. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 09:00 UTC Thursday. ============================ HIGH SEAS FORECAST NORTH-EASTERN ============================ FQAU20 AMMC 202100 IDY10230 SECURITE High Seas Forecast for North Eastern METAREA 10 NORTHEASTERN AREA: EQUATOR TO 25S, 142E TO 170E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 20 August 2025 Part 1 Warnings Nil. Part 2 Situation at 201800 UTC Nil. Part 3 Forecast South of line 08S142E 10S156E 07S170E: Southeasterly quarter winds. Wind speeds 15/25 knots, reaching up to 30 knots at times within 180nm of line 19S157E 13S170E. Moderate to rough seas. Low to moderate swell. Within 60nm of line 05S147E 06S148E: Southeasterly quarter winds. Wind speeds 15/25 knots, reaching up to 30 knots at times. Moderate to rough seas. Low swell. Rest of area: Winds not exceeding 20 knots. Slight to moderate seas. Low swell, increasing to low to moderate swell south of line 08S161E 05S164E 04S170E. Rain areas, scattered showers and isolated thunderstorms at times throughout the area. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 09:00 UTC Thursday. ============================ HIGH SEAS FORECAST SOUTH-EASTERN ============================ FQAU22 AMMC 202100 IDY10210 SECURITE High Seas Forecast for South Eastern METAREA 10 SOUTH EASTERN AREA: COAST AT 25S TO 25S170E TO 29S170E TO 45S160E TO 50S160E TO 50S129E TO COAST AT 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 20 August 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Storm Force Wind Warning 2. Melbourne Gale Warning 4. Melbourne Gale Warning 5. Part 2 Situation at 201800 UTC Trough [1] near 34S129E 50S138E. Forecast near 43S143E 50S148E at 220000UTC. Trough [2] near 25S153E 30S153E 35S151E. Forecast slow moving. Cold front forecast entering from west of area near 38S126E 45S131E to low 980hPa near 49S128E at 211800UTC. Forecast near 38S129E 44S135E 50S135E to low south of area at 220000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. West of line 29S156E 32S157E 35S153E: Northeasterly quarter winds. Wind speeds 20/30 knots. Rough seas. Low to moderate swell. South of line 37S129E 34S134E 38S149E 50S156E: Northerly quarter winds, shifting northwesterly quarter within west of trough [1] and westerly quarter west of cold front. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of cold front and troughs, heavy at times within 60nm of trough [2]. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 09:00 UTC Thursday. ============================ HIGH SEAS FORECAST NORTHERN ============================ FQAU21 AMMC 202015 40:2:1:31:11:01:00 IDY10240 SECURITE HIGH SEAS FORECAST FOR NORTHERN METAREA 8/10/11 NORTHERN AREA: EQUATOR TO 12S, 90E TO 142E AND SOUTHWARD TO COAST, 125E TO 142E ISSUED BY THE AUSTRALIAN GOVERNMENT BUREAU OF METEOROLOGY FOR 24 HOURS COMMENCING 2300 UTC 20 AUGUST 2025 PART 1 WARNINGS NIL. PART 2 SITUATION AT 201800 UTC TROUGH NEAR 10S095E 14S099E. FORECAST SLOW MOVING. PART 3 FORECAST WITHIN 60NM OF LINE 09S138E 10S142E: SOUTHEASTERLY WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW SWELL. REST OF AREA: WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL, INCREASING TO LOW TO MODERATE SWELL WEST OF LINE 02S097E 07S106E 09S116E 12S119E. RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT AREA EXCEPT SOUTH OF LINE 10S100E 10S110E 06S123E 12S142E. VISIBILITY REDUCING BELOW 2NM IN PRECIPITATION. PLEASE BE AWARE WIND AND WAVE FORECASTS ARE AVERAGES. WIND GUSTS CAN BE 40 PER CENT STRONGER THAN THE FORECAST, AND STRONGER STILL IN SQUALLS AND THUNDERSTORMS. MAXIMUM WAVES CAN BE TWICE THE FORECAST HEIGHT. WEATHER MELBOURNE THE NEXT ROUTINE FORECAST WILL BE ISSUED AT 08:15 UTC THURSDAY.=