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 1100 UTC 4 December 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 1.
Melbourne Gale Warning 3.
Part 2 Situation at 040600 UTC
Cold front [1] near 45S139E 50S144E. Forecast near 40S153E 43S162E at 050000UTC
and weakening thereafter.
Forecast cold front [2] near 43S129E 50S138E. Forecast near 42S133E 50S143E at
051200UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 39S129E 41S143E 35S151E 40S163E, outside of warning areas:
Westerly quarter winds shifting northwesterly quarter east of fronts and
southwesterly quarter west of fronts. 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 240nm of
fronts. 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 20:00 UTC Thursday.
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 1100 UTC 4 December 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 3.
Melbourne Gale Warning 4.
Part 2 Situation at 040600 UTC
Cold front near 39S117E 43S121E to low 979hPa near 48S118E. Forecast near
40S125E 45S130E to low 979hPa near 49S130E at 041800UTC, then exiting east of
the area.
Cold front [2] forecast entering from west of area near 45S080E 50S083E at
041800UTC, near 43S104E 50S102E at 051200UTC.
Cold front [3] forecast entering from west of area near 42S082E 45S084E 50S084E
at 151200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system:
South of line 38S080E 48S103E 39S111E 39S129E, outside warning areas:
Westerly quarter winds shifting northwesterly quarter east of fronts. westerly
quarter west of fronts, and clockwise within 180nm of low. 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 heavy swell south of line 39S105E 35S118E 36S129E.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
fronts and within 240nm of low. 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 20:00 UTC Thursday.
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 1100 UTC 4 December 2025
Part 1 Warnings
Nil.
Part 2 Situation at 040600 UTC
Trough near 13S144E 15S160E 19S170E. Forecast near 05S146E 09S161E 09S170E at
051200UTC.
Part 3 Forecast
South of line 10S142E 15S148E 17S170E:
Southeasterly quarter winds 15/25 knots. Moderate to rough seas. Low to
moderate swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Rain areas, isolated showers and isolated thunderstorms mostly within 120nm of
trough and north of 11S. 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 20:00 UTC Thursday.
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 1100 UTC 4 DECEMBER 2025
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 040600 UTC
TROUGH NEAR 07S090E 03S101E 08S118E 07S142E. FORECAST SLOW MOVING.
PART 3 FORECAST
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT,
HEAVY AT
TIMES WITHIN 60NM OF LINE 11S097E 08S091E. 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 19:15 UTC THURSDAY.=