IDY10220
SECURITE
Updated 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 18 December 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 10.
Gale Wind Warning for Tropical Low '03U', issued by the TCWC, Australia.
Part 2 Situation at 181800 UTC
Tropical Low (03U) 997hPa near 12.6S110.0E. Forecast Tropical Low 998hPa near
13.1S108.0E at 200000UTC.
Cold front 38S103E 43S108E 50S111E. Forecast 34S123E 41S123E to developing low
1002hPa near 41S123E at 200000UTC.
Forecast developing warm front [1] near 41S123E 50S128E at 200000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
South of line 43S080E 40S098E 33S115E 34S130E, outside warning area:
Westerly quarter winds shifting northwesterly quarter east of front, shifting
southwesterly quarter within 420nm west of front. Wind speeds 20/33 knots.
Moderate to rough seas. Moderate to heavy swell.
Between lines 18S090E 23S114E and 18S090E 23S114E: Southeasterly quarter winds
20/33 knots. Moderate to rough seas. Moderate swell.
Within 60nm of Tropical Low 03U, outside warning area: Clockwise winds 20/33
knots. Moderate to rough seas. Low to moderate swell.
Remainder: Winds not exceeding 25 knots. Slight to moderate seas. Low to
moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly
within 240nm of 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 Friday.
