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 23 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 12.
Part 2 Situation at 230600 UTC
Cold front 35S099E 42S109E 50S115E. Forecast 43S126E 46S129E at 240600UTC and
moving east of area thereafter.
Forecast trough developing near 40S103E 44S109E 50S115E at 240600UTC, then near
39S108E 45S115E 50S119E at 241200UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 43S080E 40S113E 46S129E, outside warning areas:
Northwesterly quarter within 300nm east of front, tending westerly quarter west
of front, and shifting southwesterly west of trough. 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 30S080E 30S090E 37S107E.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
front and within 120nm 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 21:00 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 1100 UTC 23 September 2026
Part 1 Warnings
Nil.
Part 2 Situation at 230600 UTC
No significant features.
Part 3 Forecast
North of line 07S142E 13S155E 10S170E:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell, increasing to
low to moderate swell east of line 05S170E 07S163E 25S156E.
Remainder:
Southeasterly quarter winds 15/25 knots, reaching up to 30 knots through the
Vitiaz Strait and east of 160E. Moderate to rough seas. Low swell, increasing
to low to moderate swell east of line 05S170E 11S162E 25S156E.
Isolated showers and 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 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 23 September 2026
Part 1 Warnings
Nil.
Part 2 Situation at 230600 UTC
Trough 44S132E 50S138E. Forecast 44S153E 46S160E at 240000UTC.
Forecast cold front entering from west of area near 46S129E 50S131E at
240600UTC, then near 44S132E 50S137E at 241200UTC.
Part 3 Forecast
South of line 46S129E 50S134E:
Westerly quarter winds, shifting southwesterly quarter west of trough. Wind
speeds 25/33 knots. Rough to very rough seas. Moderate to heavy swell.
North of line 46S129E 50S134E:
Southeasterly quarter winds developing from 240000UTC. Wind speeds 20/30 knots.
Rough to very rough seas. Low to moderate swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell,
increasing to moderate to heavy south of line 44S143E 33S167E.
Rain areas, isolated showers and isolated thunderstorms mainly within 240nm of
front. 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 23 SEPTEMBER 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 230600 UTC
NO SIGNIFICANT FEATURES.
PART 3 FORECAST
WEST OF LINE 04S094E 12S098E:
SOUTHEASTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW
TO
MODERATE SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
MODERATE SWELL WEST OF LINE EQ099E 06S106E 09S120E 12S119E.
ISOLATED SHOWERS AND 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 WEDNESDAY.=