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 20 September 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 10.
Part 2 Situation at 200600 UTC
Cold front 36S134E 40S139E 50S147E. Forecast 30S153E 33S161E 38S166E at
211200UTC.
Forecast trough developing near 47S132E 50S139E at 201800UTC, 43S149E 50S160E
at 211200UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 41S129E 30S153E 37S165E, outside warning areas:
Westerly quarter winds, shifting northwesterly quarter east of front/trough,
southwesterly quarter west of front/trough. Wind speeds 25/33 knots. Rough to
very rough seas. Moderate to heavy swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Moderate to heavy swell,
decreasing to low swell west of line 25S161E 32S156E.
Rain areas, isolated showers and isolated thunderstorms mainly within 240nm of
front/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 21:00 UTC Sunday.
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 20 September 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 3.
Melbourne Gale Warning 10.
Part 2 Situation at 200600 UTC
Cold front 35S080E 37S094E to low 1000hPa 44S100E. Forecast 36S120E 43S125E
47S124E to low 1000hPa 48S119E at 211200UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 39S080E 37S107E 40S129E, outside warning areas:
Westerly quarter winds, shifting southwesterly quarter west of cold front,
northwesterly quarter east of cold front, and 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 32S104E 34S129E.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
front 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 21:00 UTC Sunday.
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 20 September 2026
Part 1 Warnings
Nil.
Part 2 Situation at 200600 UTC
Low 1010hPa near 02S170E. Forecast 1012hPa near 02S169E at 211200UTC.
Part 3 Forecast
North of line 15S142E 17S170E:
Southeasterly quarter winds 15/25 knots, reaching up to 30 knots through the
Vitiaz Strait. Moderate to rough seas. Low to moderate swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low to moderate swell.
Isolated showers and thunderstorms mainly within 480nm 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 21:00 UTC Sunday.
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 20 SEPTEMBER 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 200600 UTC
NO SIGNIFICANT FEATURES.
PART 3 FORECAST
EAST OF LINE 08S139E 11S140E:
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 TO
MODERATE SWELL WEST OF LINE EQ098E 07S107E 10S122E 12S122E.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS 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 SUNDAY.=