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 1 August 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Storm Force Wind Warning 9.
Melbourne Gale Warning 1.
Part 2 Situation at 010600 UTC
Trough 26S158E 27S155E 33S152E, forecast becoming trough 27S159E to low [1]
1013hPa near 29S155E to 32S153E at 011800UTC, then low [1] weakening and trough
32S154E 30S158E to low [2] near 25S158E at 021200UTC.
Cold front entering area from west near 50S132E 47S129E at 021200UTC.
Ridge 41S139E 50S138E, forecast 46S160E 50S160E at 021200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 32S129E 34S134E 49S146E 46S160E, outside warning areas:
Westerly quarter winds east of ridge, shifting northwesterly quarter west of
ridge, shifting southwesterly quarter within 60nm west of cold front [2]. Wind
speeds 25/33 knots. Rough to very rough seas. Moderate to heavy swell.
West of line 29S160E 34S156E:
Easterly quarter winds, shifting northwesterly quarter west of trough and
turning clockwise within 120nm of low [1] and within 240nm of low [2]. Wind
speeds 25/33 knots. 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 swell south of line 45S142E 35S166E.
Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of
trough/front and within 180 nm of low. Heavy at times within 60nm of trough and
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 Friday.
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 1 August 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 1.
Melbourne Gale Warning 3.
Melbourne Gale Warning 10.
Melbourne Storm Force Wind Warning 12.
Part 2 Situation at 010600 UTC
Cold front [1] 25S097E 36S107E 50S117E, forecast 26S113E 38S124E 47S129E at
021200UTC.
Cold front [2] 45S092E 50S095E, forecast becoming cold front [2] 36S105E
43S109E to low 969hPa near 50S105E at 020000UTC, then 34S115E 42S118E to low
977hPa near 47S113E at 021200UTC.
Trough 38S100E 46S105E, forecast 47S122E 50S121E at 021200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 37S080E 30S090E 26S112E 33S129E, outside warning areas:
Southwesterly quarter winds west of cold front [1], shifting northerly quarter
east of cold front [1], shifting northwesterly quarter within 240nm of trough
and within 540nm east of cold front [2], and turning clockwise within 420nm of
low. Wind speeds 25/33 knots. Rough to very rough seas. Moderate to heavy swell.
West of line 15S094E 30S102E:
Southerly quarter winds 25/30 knots. 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 swell southwest of line 14S090E 19S101E 26S109E.
Rain areas, scattered showers and isolated thunderstorms within 240nm of
fronts/trough and within 300nm 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 Friday.
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 1 August 2025
Part 1 Warnings
Nil.
Part 2 Situation at 010600 UTC
Trough near 17S150E 20S155E, forecast becoming trough 15S150E 18S153E to low
1012hPa near 22S156E at 020000UTC, then trough 15S153E 21S159E to low 1004hPa
near 25S158E at 021200UTC.
Part 3 Forecast
South of line 11S143E 22S170E:
Southeasterly quarter winds tending northerly quarter east of trough, shifting
southwesterly quarter west of trough and turning clockwise within 180nm of low.
Wind speeds 15/25 knots, reaching up to 30 knots within 120nm of trough and low
after 011800UTC. Moderate to rough seas. Low to moderate swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Rain areas, scattered showers and isolated thunderstorms mostly north of line
12S170E 12S142E and within 180nm of trough and low. Heavy at times within 60nm
of low and within 180nm 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 21:00 UTC Friday.
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 1 AUGUST 2025
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 010600 UTC
SOUTHEASTERLY TRADE FLOW THROUGHOUT MUCH OF THE REGION.
LOW 1008HPA NEAR 04S096E, FORECAST 1006HPA NEAR 05S095E AT 021200UTC.
PART 3 FORECAST
SOUTH OF LINE 10S142E 03S132E 06S120E:
SOUTHEASTERLY QUARTER WINDS 20/30 KNOTS. MODERATE TO ROUGH SEAS. LOW
SWELL,
INCREASING TO LOW TO MODERATE SWELL WITHIN 60NM OF LINE 10S126E
11S129E AFTER
020000UTC.
WEST OF LINE EQ097E 12S097E:
SOUTHEASTERLY QUARTER 15/25 KNOTS, BECOMING CLOCKWISE 20/30 KNOTS
WITHIN 180NM
OF LOW. MODERATE TO ROUGH SEAS. LOW TO MODERATE SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
LOW TO MODERATE SWELL WEST OF LINE EQ098E 07S106E 12S108E.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MOSTLY NORTH
OF LINE
11S090E 12S098E 07S132E 11S142E. HEAVY AT TIMES IN SOUTHWEST
SEMICIRCLE 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 20:15 UTC FRIDAY.=