Bulletinset for METAREA 10 Edition date (UTC): 2026-08-20 03:37:21 ============================ HIGH SEAS FORECAST SOUTH-EASTERN ============================ FQAU22 AMMC 192100 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 19 August 2026 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Gale Warning 12. Part 2 Situation at 191800 UTC Cold front approaching area from west near 44S121E 50S127E. Forecast front near 43S145E 50S150E at 210000UTC. Trough [1] near 36S150E 50S143E. Forecast trough [1] exiting area to east near 42S156E 46S161E 50S163E at 201800UTC. Forecast trough [2] developing near 36S151E 42S155E at 201200UTC, then near 34S154E 43S158E at 210000UTC. Trough [3] near 36S133E 38S135E 41S134E. Forecast trough [3] exiting area onto land near 35S139E 40S142E at 200600UTC. Part 3 Forecast Refer to latest warnings for details of the area affected. South of line 38S129E 36S161E, outside of warning areas: Westerly quarter winds shifting northerly quarter east of troughs [1] and [2], and shifting northwesterly quarter within 360nm east of front. Wind speeds 20/33 knots. Moderate to rough seas. Moderate swell, rising to heavy swell west of line 38S137E 50S147E. Remainder: Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell, increasing to moderate to heavy south of line 34S129E 37S137E. Isolated showers, tending scattered within 180nm of troughs and within 360nm of front. 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 WESTERN ============================ FQAU23 AMMC 192100 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 19 August 2026 Part 1 Warnings Refer to latest warnings for boundary of affected area and type of weather system. Melbourne Gale Warning 1. Melbourne Gale Warning 2. Melbourne Gale Warning 12. Part 2 Situation at 191800 UTC Cold front [1] 41S114E 47S119E 50S115E. Forecast exiting area to east near 42S126E 48S129E 50S128E at 200300UTC. Forecast cold front [2] 37S081E 46S082E to low 985hPa near 47S078E entering at 200600UTC. Forecast cold front [2] near 33S087E 44S097E to low 988hPa near 48S094E at 210000UTC. Warm front near 46S094E 49S085E. Forecast warm front near 47S130E 48S126E at 210000UTC. Forecast trough [1] entering area from west near 38S078E 47S083E at 201200UTC, then near 38S084E 48S093E at 210000UTC. Trough [2] near 12S094E 24S112E. Forecast trough [2] near 12S092E 23S114E at 210000UTC. Part 3 Forecast Refer to latest warnings for details of the area affected. South of line 33S080E 39S110E 39S129E, outside warning areas: Westerly quarter winds shifting northwesterly quarter winds within 420nm east of cold fronts and within 360nm north of warm front, and shifting southwesterly quarter within 300nm west of trough [1]. Winds turning clockwise within 420nm of low. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Slight to moderate seas. Moderate swell, increasing to moderate to heavy east of line 23S097E 36S094E. Rain areas, scattered showers and isolated thunderstorms mostly within 480nm of low and cold front [1], and within 180nm of all other features. Heavy at times within 120nm 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 NORTH-EASTERN ============================ FQAU20 AMMC 192100 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 19 August 2026 Part 1 Warnings Nil. Part 2 Situation at 191800 UTC Trough EQ162E to low 1007hPa near 05S164E to 10S170E. Forecast trough EQ160E to low 1010hPa near 06S162E to 13S170E at 201800UTC. Part 3 Forecast East of line EQ160E 06S163E 11S170E: Winds not exceeding 20 knots. Slight to moderate seas. Low to moderate swell. Remainder: Southeasterly quarter winds tending southerly quarter north of 10S, and turning clockwise within 180nm of low. Wind speeds 15/25 knots, increasing to 20/30 knots east of line 09S161E 15S154E 22S170E, and within 60nm of line 03S155E 06S147E. Moderate to rough seas. Low to moderate swell, decreasing to low north of line 10S144E EQ156E. Rain areas, scattered showers and isolated thunderstorms mostly throughout area, except north of line 05S146E 05S157E. Precipitation becoming heavy within 240nm southwest of low and trough. Isolated showers elsewhere. 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 192015 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 19 AUGUST 2026 PART 1 WARNINGS NIL. PART 2 SITUATION AT 191800 UTC NIL SIGNIFICANT FEATURES. PART 3 FORECAST EAST OF LINE EQ106E 12S113E SOUTHEASTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW SWELL, INCREASING TO MODERATE SOUTH OF LINE 08S112E 09S126E. REMAINDER: WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. MODERATE SWELL, DECREASING TO LOW OF LINE EQ098E 07S107E. RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS, MOSTLY WEST OF LINE EQ099E 06S090E 12S095E AND EAST OF LINE EQ131E 12S131E. 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.=