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 17 September 2025
Part 1 Warnings
Nil.
Part 2 Situation at 170600 UTC
Southeasterly trade wind flow.
Part 3 Forecast
Bounded by lines 09S142E 07S158E 07S170E and 17S146E 19S165E 22S170E:
Southeasterly quarter winds 15/25 knots. Moderate to rough seas. Low swell,
increasing to low to moderate east of line 04S159E 16S159E.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell..
Rain areas, scattered showers and isolated thunderstorms throughout area,
except south of line 19S147E 12S145E 13S170E. 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 21:00 UTC Wednesday.
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 17 September 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Hurricane Force Wind Warning 10.
Melbourne Gale Warning 1.
Melbourne Gale Warning 2.
Melbourne Gale Warning 3.
Melbourne Gale Warning 12.
Part 2 Situation at 170600 UTC
Trough [1] 27S153E 36S169E. Forecast 28S156E 31S170E at 181200UTC.
Trough [2] 46S147E 46S156E 50S161E. Forecast 41S159E 43S166E at 180000UTC, then
weakening thereafter.
Cold front [1] 33S120E 40S129E 47S132E 50S126E. Forecast 38S138E 50S155E at
181200UTC.
Cold front [2] forecast entering area from west near 41S124E 47S131E 50S132E at
180300UTC, then 43S131E 47S138E 50S140E at 181200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 36S129E 39S143E 32S168E, outside warning areas:
Northwesterly quarter winds, shifting southwesterly quarter within 420nm west
of troughs. Wind speeds 25/33 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 180nm of
front, and 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 21:00 UTC Wednesday.
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 17 September 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Hurricane Force Wind Warning 10.
Melbourne Gale Warning 11.
Melbourne Gale Warning 12
Part 2 Situation at 170600 UTC
Cold front [1] 33S120E 40S129E 47S132E 50S126E. Forecast 35S126E 38S131E at
171800UTC, then east of the area thereafter.
Cold front [2] 42S104E 48S111E 50S112E. Forecast 41S124E 47S131E 50S132E at
180300UTC, then east of the area thereafter.
Warm front 46S097E 50S090E. Forecast 46S108E 50S105E at 181200UTC.
Cold front [3] forecast developing near 40S106E 44S108E at 171800UTC, then
36S118E 39S124E to developing low 994hPa near 42S126E at 181200UTC.
Cold front [4] forecast entering area near 47S080E 50S083E at 181200UTC, then
44S080E 50S089E at 181200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 39S080E 34S115E 34S129E, outside warning areas:
Northwesterly quarter winds, shifting southwesterly quarter within 600nm west
of cold front [1], within 360nm of cold front [2] and warm front, and within
1080nm west of cold front [4]. Clockwise winds within 120nm of low. Wind speeds
20/33 knots. Rough to very rough seas. Heavy swell.
Within area south of line 16S090E 21S115E and north of line 23S090E 27S114E:
Southeasterly quarter winds 20/30 knots. Rough to very rough seas. Moderate
swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Moderate swell increasing
up to heavy swell south of line 35S086E 28S103E 31S114E.
Rain areas, scattered showers and isolated thunderstorms mainly within 180nm of
fronts, trough 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 21:00 UTC Wednesday.
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 17 SEPTEMBER 2025
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 170600 UTC
SOUTHEASTERLY TRADE FLOW.
PART 3 FORECAST
SOUTH OF LINE 07S090E 05S104E 09S109E:
SOUTHEASTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS.
MODERATE SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
LOW TO MODERATE WEST AND SOUTH OF LINE EQ098E 07S107E 07S107E
10S123E.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT
MOST OF
AREA, EXCEPT SOUTH OF LINE 08S105E 11S122E 03S123E 10S142E.
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 20:15 UTC WEDNESDAY.=