Bulletinset for METAREA 10 Edition date (UTC): 2025-12-26 06:07:15 ============================ TROPICAL CYCLONE WARNING PERTH ============================ WTAU06 APRF 260050 IDW23200 40:2:2:24:12S094E999:11:00 SECURITE OCEAN WIND WARNING FOR METAREA 10 Issued by the Australian Bureau of Meteorology Tropical Cyclone Warning Centre at 0050 UTC 26 DECEMBER 2025 STORM FORCE WIND WARNING Please be aware, wind gusts can be a further 40 percent stronger than the averages given here, and maximum waves may be up to twice the height. SITUATION At 0000 UTC Tropical Cyclone Grant was centred within 30 nautical miles of latitude eleven decimal nine south (11.9S) longitude ninety three decimal five east (93.5E) Recent movement : west at 7 knots Maximum winds : 50 knots Central pressure: 989 hPa AREA AFFECTED Within 55 nautical miles of the centre. FORECAST Maximum winds to 50 knots near the centre. Winds above 48 knots within 20 nautical miles in SE quadrant and within 40 nautical miles in SW quadrant with very rough seas and moderate swell. Winds above 34 knots within 30 nautical miles in NE quadrant and within 50 nautical miles in SE quadrant and within 55 nautical miles in SW quadrant and within 45 nautical miles in NW quadrant with rough seas and moderate swell. Forecast positions At 1200 UTC 26 December: Within 50 nautical miles of 11.9 south 92.1 east Central pressure 990 hPa. Winds to 50 knots At 0000 UTC 27 December: Within 60 nautical miles of 12.0 south 90.5 east Central pressure 990 hPa. Winds to 50 knots REMARKS All ships in the area please send weather reports every three hours. Regular weather observing ships use normal channels. Other ships please use email to tcwc@bom.gov.au. Next warning will be issued by 0700 UTC 26 December 2025. AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE ============================ HIGH SEAS FORECAST WESTERN ============================ FQAU23 AMMC 252000 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 25 December 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Storm Force Wind Warning issued by TCWC Melbourne for Tropical Cyclone "Grant". Melbourne Storm Force Wind Warning 2. Part 2 Situation at 251800 UTC Tropical Cyclone "Grant" 992hPa near 12.3S94.3E. Forecast Tropical Cyclone "Grant" 988hPa near 11.8S91.4E at 270000UTC.. Cold front near 30S114E 39S114E to low [1] 996hPa near 43S112E to warm front near 50S115E. Forecast 33S128E 41S127E to low 976hPa near 46S121E to warm front 50S120E 50S120E at 270000UTC. Low [2] 1002hPa near 20S118E. Forecast low [2] 1003hPa near 18S117E at 270000UTC. Trough [1] near 45S096E 50S100E. Forecast near 48S109E 50S110E at 261800UTC, and south of area thereafter. Trough [2] 11S117E 16S119E. Forecast 10S119E 12S120E 15S119E at 270000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. Within 240nm of Tropical Cyclone "Grant", outside of warning area: Clockwise winds around Tropical Cyclone "Grant". Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. South of line 42S080E 41S103E 30S109E 32S129E, outside warning area: Southwesterly quarter winds, shifting northeasterly quarter east of cold front and warm front, westerly quarter west of trough [1], and northwesterly quarter 240nm east of trough [1]. Winds turning clockwise within 360nm of low. Wind speeds 20/30 knots. Rough seas. Moderate to heavy swell. East of line 21S111E 29S111E: Southerly quarter winds 20/30 knots. Rough seas. Low to moderate swell. Remainder: Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of front, trough [2] and lows. Heavy at times within 180nm of Tropical Cyclone "Grant", 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 08:00 UTC Friday. ============================ HIGH SEAS FORECAST NORTH-EASTERN ============================ FQAU20 AMMC 252000 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 25 December 2025 Part 1 Warnings Nil. Part 2 Situation at 251800 UTC Forecast trough entering from the south near 22S151E 25S155E at 260000UTC. Forecast near 20S149E 21S156E 24S159E 25S164E at 270000UTC. Part 3 Forecast South of line 21S150E 24S161E: Northwesterly quarter winds east of trough, shifting southerly quarter south of trough. Wind speeds 20/30 knots. Rough seas. Low to medium swell. Whole area: Winds not exceeding 20 knots. Slight to moderate seas. Low swell. Rain areas, isolated showers and isolated thunderstorms throughout, except north of line 03S145E 08S156E 06S170E. Heavy at times within 120nm of trough. 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 08:00 UTC Friday. ============================ HIGH SEAS FORECAST SOUTH-EASTERN ============================ FQAU22 AMMC 252000 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 25 December 2025 Part 1 Warnings Nil. Part 2 Situation at 251800 UTC Trough near 27S154E 29S161E 36S169E. Forecast near 25S164E 26S167E 31S173E at 270000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. East of line 50S146E 40S147E 34S151E, outside warning areas: Southwesterly quarter winds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. North of line 36S137E 43S129E: Northeasterly quarter winds 20/30 knots. Rough seas. Moderate to heavy swell. West of line 35S136E 50S133E: Northerly quarter winds 20/30 knots. Rough seas. Low to moderate swell. Within 300nm west of trough: Southeasterly quarter winds 20/30 knots. Rough seas. Low to moderate swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low swell to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of trough. Heavy at times within 60nm of trough. 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 08:00 UTC Friday. ============================ HIGH SEAS FORECAST NORTHERN ============================ FQAU21 AMMC 251915 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 25 DECEMBER 2025 PART 1 WARNINGS REFER TO LATEST WARNINGS FOR DETAILS OF THE AREA AFFECTED. STORM FORCE WIND WARNING ISSUED BY TCWC MELBOURNE FOR TROPICAL CYCLONE "GRANT". PART 2 SITUATION AT 251800 UTC TROPICAL CYCLONE "GRANT" 992HPA NEAR 12.3S94.3E. FORECAST TROPICAL CYCLONE "GRANT" 988HPA NEAR 11.8S91.4E AT 270000UTC. TROUGH [1] 11S117E 16S119E. FORECAST 10S119E 12S120E 15S119E AT 270000UTC. TROUGH [2] 10S105E 11S096E. FORECAST 10S100E 11S093E AT 270000UTC. PART 3 FORECAST REFER TO LATEST WARNINGS FOR BOUNDARY OF AFFECTED AREA AND TYPE OF WEATHER SYSTEM. WITHIN 120NM OF TROPICAL CYCLONE GRANT, OUTSIDE WARNING AREA: CLOCKWISE WINDS AROUND TROPICAL CYCLONE GRANT. WIND SPEEDS 20/33 KNOTS. ROUGH TO VERY ROUGH SEAS. MODERATE TO HEAVY SWELL. WEST OF LINE EQ095E 05S101E: NORTHWESTERLY QUARTER WINDS 20/30 KNOTS. ROUGH SEAS. LOW TO MODERATE SWELL. SOUTH OF LINE 10S142E 08S131E 09S116E: NORTHWESTERLY QUARTER WINDS 20/30 KNOTS, SHIFTING SOUTHWESTERLY WITHIN 60NM OF TROUGH. ROUGH SEAS. LOW SWELL. REMAINDER: WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL, INCREASING TO MODERATE SOUTH, AND WEST OF LINE EQ098E 05S103E 08S110E. RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT AREA. HEAVY AT TIMES WITHIN 120NM OF TROPICAL CYCLONE GRANT. 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 07:15 UTC FRIDAY.=