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 11 August 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Storm Force Wind Warning 3.
Melbourne Storm Force Wind Warning 10.
Melbourne Gale Warning 12.
Part 2 Situation at 111800 UTC
Cold front [1] near 40S135E 46S141E 50S141E. Forecast cold front [1] weakening
near 38S153E 45S158E 50S159E at 121200UTC.
Trough near 33S137E 43S146E 50S147E. Forecast trough near 26S160E 32S166E
39S165E at 130000UTC.
Forecast warm front [1] entering area from west near 44S131E 48S131E 50S129E at
120000UTC and cold front [2] entering area from west near 47S129E 50S132E at
120600UTC, then cold front [2] merging with warm front [1] near 43S147E 46S150E
50S150E at 121800UTC, and just cold front [2] near 43S153E 46S156E 50S157E at
130000UTC.
Forecast warm front [2] entering area from west near 47S138E to low 984hPa near
50S131E at 130000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
East of line 25S160E 43S154E:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell.
Remainder, outside warning areas:
Westerly quarter winds, turning southwesterly quarter within 180nm west of cold
front [2], shifting northwesterly quarter west of warm front [2] and within
240nm east of trough and other fronts. Winds turning clockwise within 240nm of
low. Wind speeds 20/33 knots. Rough to very rough seas. Low to moderate swell,
increasing to moderate to heavy south of line 46S160E 30S129E.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
features. 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.
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 11 August 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Storm Force Wind Warning 3.
Melbourne Storm Force Wind Warning 10.
Melbourne Gale Warning 12.
Part 2 Situation at 111800 UTC
Cold front [1] near 45S080E 50S106E. Forecast cold front [1] 40S080E 48S106E
48S120E at 121200UTC, and near 37S081E 45S100E 45S114E 50S129E at 130000UTC.
Forecast cold front [2] entering area from west near 44S077E 46S080E 50S081E at
130000UTC.
Warm front near 46S124E 50S120E. Forecast warm front exiting area to east near
44S131E 48S131E 50S129E at 120000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 34S080E 39S129E, outside of warning areas:
Westerly quarter winds, shifting northwesterly quarter north of cold front [1],
within 600nm east of cold front [2], and within 180nm east of warm front. Wind
speeds 20/33 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 to moderate east of line 12S120E 22S114E.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
fronts, and west of line 12S117E 29S109E. 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 11 August 2026
Part 1 Warnings
Nil.
Part 2 Situation at 111800 UTC
Trough near 03S153E to low 1007hPa near 04S166E to 10S170E. Forecast trough
01S154E to low 1007hPa near 07S162E to 11S170E at 130000UTC.
Part 3 Forecast
North of line 10S153E 16S170E:
Southeasterly quarter winds south of trough shifting westerly quarter north of
trough and turning clockwise within 180nm of low. Wind speeds 15/25 knots.
Moderate to rough seas. Low swell, increasing to low to moderate within 180nm
of low.
West of line 18S150E 25S157E:
Variable winds below 20 knots initially, becoming southeasterly quarter winds
20/30 knots from 121500UTC. Slight to moderate seas, rising to moderate to
rough from 121500UTC. Low swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
trough, within 360nm of low, and north of line 03S142E 08S153E. 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 11 AUGUST 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 111800 UTC
NIL.
PART 3 FORECAST
SOUTH OF LINE 09S090E 05S103E 07S108E:
SOUTHEASTERLY QUARTER WINDS. WIND SPEEDS 15/25 KNOTS, EASING BELOW 20
KNOTS BY
130000UTC. MODERATE TO ROUGH SEAS. MODERATE TO HEAVY SWELL.
SOUTH OF LINE 14S136E 14S141E:
VARIABLE WINDS BELOW 20 KNOTS INITIALLY, BECOMING SOUTHEASTERLY
QUARTER WINDS
15/25 KNOTS FROM 121800UTC. SLIGHT TO MODERATE SEAS, RISING TO
MODERATE TO
ROUGH FROM 121800UTC. LOW SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
MODERATE WEST OF LINE EQ099E 06S106E 09S120E 12S120E.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MOSTLY WEST
OF LINE
EQ100E 12S112E AND NORTH OF LINE 03S132E 03S142E. ISOLATED SHOWERS
ELSEWHERE.
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.=