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 31 December 2025
Part 1 Warnings
Nil.
Part 2 Situation at 311800 UTC
Trough near 39S080E 41S085E 42S090E 40S094E. Forecast near 43S109E 44S105E
44S099E at 020000UTC.
Forecast developing warm front near 42S090E 43S084E to low 961hPa near 43S080E
at 011200UTC, near 44S099E 46S091E to low 967hPa near 46S085E at 020000UTC.
Forecast cold front entering from west of area near 40S080E 46S085E at
020000UTC.
Tropical low (10U) 1004hPa near 11S107E. Forecast 1004hPa near 14S110E at
020000UTC.
Part 3 Forecast
East of line 31S111E 35S114E to coast:
Southerly quarter winds. Wind speeds 20/30 knots. Rough to very rough seas.
Moderate swell.
South of line 34S080E 50S128E:
Westerly quarter winds, shifting northwesterly quarter east of trough and north
of warm front, easterly quarter within 120nm south of warm front, southwesterly
quarter west of cold front, and clockwise within 180nm of low. Wind speeds
20/30 knots. Moderate to rough seas. Moderate to heavy swell.
Within 180nm of Tropical Low (10U):
Clockwise wind 20/30 knots. Rough seas. Moderate swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell,
increasing to moderate to heavy south of line 43S107E 43S120E 46S129E.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
fronts and trough, within 240nm lows. Heavy at times within 180nm of tropical
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 08:00 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 2300 UTC 31 December 2025
Part 1 Warnings
Nil.
Part 2 Situation at 311800 UTC
Trough near 10S155E 09S162E 11S170E. Forecast trough near 08S156E 08S166E
10S170E at 011200UTC.
Part 3 Forecast
West of line 19S150E 21S151E:
Easterly quarter winds 15/25 knots. Moderate to rough seas. Low swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell, increasing to
low to moderate south of line 15S154E 12S162E 20S164E 22S170E.
Rain areas, scattered showers and isolated thunderstorms mostly north and west
of line 25S156E 19S152E 12S156E 10S170E. Heavy at times west of line 17S150E
19S151E 21S149E and within 180nm north 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 Thursday.
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 31 December 2025
Part 1 Warnings
Nil.
Part 2 Situation at 311800 UTC
Trough [1] near 46S129E 50S135E. Forecast near 47S139E 50S146E at 011200UTC and
weakening thereafter.
Trough [2] near 42S155E 44S161E. Forecast near 36S160E 37S166E at 020000UTC.
Part 3 Forecast
East of line 37S157E 41S154E 44S159E:
Southwesterly quarter winds 20/30 knots. Rough seas. Moderate swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell,
increasing to moderate to heavy south of line 46S129E 50S137E.
Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of
troughs. 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 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 2300 UTC 31 DECEMBER 2025
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 311800 UTC
MONSOON TROUGH 03S092E 07S104E TO TROPICAL LOW (10U) 1004HPA NEAR
11S107E.
FORECAST MONSOON TROUGH 06S098E 08S107E TO TROPICAL LOW (10U) 1004HPA
NEAR
13S110E AT 020000UTC.
PART 3 FORECAST
WITHIN 120NM OF TROPICAL LOW:
CLOCKWISE WINDS 20/30 KNOTS. ROUGH SEAS. MODERATE SWELL.
WEST OF LINE 08S090E 01S099E:
WESTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW
SWELL.
SOUTH OF LINE 10S125E 12S130E:
WESTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW
SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
LOW TO MODERATE WEST OF LINE 07S112E 12S118E.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT
WHOLE AREA.
HEAVY AT TIMES WITHIN 180NM OF LOW (10U) AND WITHIN 120NM WEST OF
SUMATRA.
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 THURSDAY.=