FQAU23 AMMC 160900

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 16 September 2025



Part 1 Warnings

Refer to latest warnings for details of the area affected.



Melbourne Gale Warning 7.

Melbourne Gale Warning 9.

Melbourne Gale Warning 10.

Melbourne Gale Warning 11.



Part 2 Situation at 160600 UTC

Cold front [1] near 34S105E 50S112E. Forecast 31S115E 43S130E to developing low

[1] 973hPa near 48S126E at 170300UTC, and near 33S122E 42S134E 50S137E to low

[1] 959hPa near 52S128E at 171200UTC.



Cold front [2] near 38S088E 44S092E to low [2] 998hPa near 45S091E. Forecast

38S117E to low [2] 1010hPa near 34S113E at 171200UTC.



Warm front [1] near 45S116E 50S114E. Forecast near 45S129E 50S123E at 170000UTC

and decaying thereafter.



Forecast warm front [2] entering from west near 48S085E 51S079E at 161800UTC,

then near 49S094E 56S080E at 171200UTC.



Forecast trough developing near 46S102E 50S106E at 170000UTC, then near 43S112E

47S116E 50S117E at 171200UTC.



Part 3 Forecast

Refer to latest warnings for boundary of affected area and type of weather

system.



West of line 16S092E 18S091E:

Southeasterly quarter winds 20/30 knots. Rough seas. Moderate swell.



South of line 41S080E 32S103E 32S129E, outside warning areas:

Southwesterly quarter winds, shifting northwesterly quarter within 480nm east

of cold front [1], shifting northerly quarter within 300nm east of warm front

[1], turning westerly quarter north of warm front [2] and within 360nm east of

cold front [2]. Clockwise winds within 120nm of lows. 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 swell increasing

up to heavy swell south of line 37S080E 32S092E 32S103E.



Rain areas, scattered showers and isolated thunderstorms mainly within 180nm of

fronts, trough and lows. 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 Tuesday.