FQAU23 AMMC 152000

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 15 December 2025



Part 1 Warnings

Refer to latest warnings for details of the area affected.



Melbourne Gale Warning 6.



Part 2 Situation at 151800 UTC



Cold front [1] near 44S109E 50S118E. Forecast near 42S126E 43S129E at 170000UTC.



Trough [1] near 24S097E to low 1002hPa near 34S104E to trough 44S114E. Forecast

trough [1] near 31S115E to low 1007hPa near 38S118E to trough [1] near 40S126E

at 170000UTC.



Trough [2] near 42S081E 48S092E 50S091E. Forecast 39S100E 42S108E 50S109E at

170000UTC.



Forecast cold front [2] entering area from the west near 44S071E 50S086E at

170000UTC.



Low 1005hPa near 12S114E. Forecast slow moving.



Part 3 Forecast

Refer to latest warnings for details of the area affected.



East of line 42S123E 50S128E:

Northwesterly quarter east of cold front. Wind speeds 20/33 knots. Rough seas.

Moderate swell.



Within 180nm of line of 30S105E 37S111E 40S115E, outside warning areas:

Southerly quarter winds west of trough [1], shifting northwesterly quarter east

of trough [1]. WInds shifting clockwise 180nm of low. Wind speed 20/30 knots.

Rough seas. Moderate swell.



North of line 16S098E 14S090E, outside of warning areas:

Southeasterly quarter winds 20/33 knots. Rough seas. Moderate swell.



West of line 41S080E 50S099E:

Southwesterly quarter winds 20/33 knots, shifting northwesterly quarter east of

cold front [2].



Remainder:

Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell.



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

troughs, cold front 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 08:00 UTC Tuesday.