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 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 2.
Melbourne Gale Warning 4.
Melbourne Gale Warning 5.
Melbourne Gale Warning 7.
Part 2 Situation at 170600 UTC
High 1032hPa near 38S142E. Forecast 1029hPa near 30S153E at 181200UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
Whole area, outside warning areas:
Anticlockwise winds, shifting northwesterly quarter south of 46S. Wind speeds
20/33 knots. Rough to very rough seas. Moderate to heavy swell.
Rain areas, isolated showers and isolated thunderstorms throughout area,
increasing to scattered south of 46S. 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 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 17 September 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 4.
Melbourne Gale Warning 6.
Part 2 Situation at 170600 UTC
Trough [1] 26S103E to low 1008hPa near 34S104E. Forecast 28S111E to low 998hPa
near 35S111E at 181200UTC.
Trough [2] 40S102E 50S115E. Forecast 40S109E 50S122E at 171500UTC and decaying
thereafter.
Cold front [1] 40S085E 50S096E. Forecast 42S097E 50S113E at 171800UTC and
decaying thereafter.
Forecast cold front [2] 43S076E 50S083E at 180300UTC and 41S088E 50S097E at
181200UTC.
Forecast warm front 46S083E 49S080E at 171200UTC and 48S106E 50S101E at
180600UTC and moving south thereafter.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 39S129E 43S121E 38S080E, outside of warning areas:
Westerly quarter winds, shifting northwesterly quarter east of trough [2] and
southeast of warm front. Winds southwesterly quarter west of cold front [1] and
[2]. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell.
North of line 39S129E 43S121E 38S080E and south of 25S:
Southwesterly quarter winds west of trough [1] veering northwesterly quarter
east of trough [1]. Winds turning clockwise within 240nm 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 moderate to heavy south of line 11S093E 20S105E.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
fronts and troughs, and within 240nm of low and within 120nm of line 11S090E
19S100E. 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 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 17 September 2026
Part 1 Warnings
Nil.
Part 2 Situation at 170600 UTC
Trough near 02S156E 07S170E, forecast slow moving.
Part 3 Forecast
South of line 03S142E 01S154E 13S170E:
Southeasterly quarter winds 20/30 knots. Moderate to rough seas. Low swell,
increasing to moderate south of line 13S152E 13S160E 22S170E.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Isolated showers and thunderstorms mainly north of line EQ150E 17S170E.
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 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 17 SEPTEMBER 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 170600 UTC
NO SIGNIFICANT FEATURES.
PART 3 FORECAST
EAST OF LINE 06S130E 15S130E:
SOUTHEASTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW
SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING UP
TO MODERATE SOUTHWEST OF INDONESIA.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MOSTLY THROUGHOUT THE
AREA.
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 THURSDAY.=