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 1 September 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Storm Force Wind Warning 1.
Melbourne Gale Warning 9.
Melbourne Gale Warning 12.
Part 2 Situation at 011800 UTC
Cold front [1] 38S066E to low [1] 1004hPa near 45S078E to warm front 46S082E
41S090E. Forecast cold front [1] 33S098E 36S103E to low [1] 990hPa near 45S107E
to warm front 46S110E 47S116E at 030000UTC.
Trough [1] 17S089E 22S094E 25S100E. Forecast trough [1] west of area near
16S083E 22S090E at 030000UTC.
Forecast trough [2] developing near 39S087E to low [1] 989hPa near 45S094E at
021200UTC, and trough [2] 37S097E to low [1] 990hPa near 45S107E at 030000UTC.
Forecast cold front [2] west of area near 46S068E 50S072E at 021200UTC, and
cold front [2] 43S073E 50S082E at 030000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 37S080E 33S099E 35S129E, outside warning areas:
Southwesterly quarter winds, shifting northwesterly quarter within 540nm east
of cold front [1] and 480nm east of cold front [2], tending southwesterly
quarter within 300nm west of cold front [1], turning southerly quarter within
300nm west or south of trough [2]. Winds becoming clockwise within 180nm of
low. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell.
West of trough [1]:
Southeasterly quarter winds 20/30 knots Rough to very rough seas. Moderate
swell.
Remainder:
Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell.
Rain areas, scattered showers and isolated thunderstorms mostly west of line
12S103E 19S103E, and within 180nm of fronts, troughs, and low. Isolated showers
east of line 33S105E 50S105E. 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 09:00 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 2300 UTC 1 September 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 7.
Melbourne Gale Warning 9.
Part 2 Situation at 011800 UTC
Forecast trough [1] developing near 38S120E 50S133E at 020000UTC, trough [1]
36S139E 41S149E 50S156E at 030000UTC.
Forecast trough [2] developing near 34S147E 38S150E at 021800UTC, trough [2]
36S152E 40S157E at 030000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 35S129E 36S149E 44S161E, outside of warning areas:
Northwesterly quarter winds shifting westerly quarter west of trough [1] 20/33
knots. Rough to very rough seas. Moderate to heavy swell.
Remainder:
Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell,
increasing to moderate to heavy east of line 31S165E 44S156E.
Isolated showers south of Australia. Rain areas, scattered showers and isolated
thunderstorms mostly within 180nm 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 09:00 UTC Wednesday.
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 1 September 2026
Part 1 Warnings
Nil.
Part 2 Situation at 011800 UTC
Trough 02S156E 09S169E. Forecast trough 04S156E 12S164E at 030000UTC.
Part 3 Forecast
East of line EQ157E 03S158E 08S170E and south of line 17S146E 22S170E:
Winds not exceeding 20 knots. Slight to moderate seas. Low to moderate swell.
Remainder:
Southeasterly quarter winds 15/25 knots, reaching up to 30 knots at times
within 60nm of the Vitiaz Strait. Moderate to rough seas. Low to moderate swell.
Rain areas, and isolated showers and thunderstorms throughout most of area.
Scattered showers within 300nm south and west 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 09:00 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 2300 UTC 1 SEPTEMBER 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 011800 UTC
NIL SIGNIFICANT FEATURES.
PART 3 FORECAST
AREA BOUNDED BY LINES EQ099E 12S103E AND EQ110E 05S120E 12S120E, AND
EAST OF
LINE 07S136E 11S136E:
SOUTHEASTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW
SWELL,
INCREASING TO LOW TO MODERATE SWELL SOUTH OF LINE EQ098E 06S106E
09S117E.
REMAINDER: WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW
SWELL,
INCREASING TO LOW TO MODERATE SWELL WEST OF LINE 103E.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT 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 08:15 UTC WEDNESDAY.=