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 1100 UTC 28 September 2025
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Storm Force Wind Warning 1.
Melbourne Storm Force Wind Warning 4.
Part 2 Situation at 280600 UTC
Cold front [1] near 36S086E 50S101E. Forecast near 39S101E 50S105E at 282100UTC
and weakening thereafter.
Trough [1] entering from west of region near 38S083E 42S085E to low [1] 974hPa
near 47S081E at 281500UTC. Forecast near 40S095E 46S093E to low [1] 962hPa near
50S090E at 290000UTC, with low moving south of area thereafter and trough near
39S105E 47S105E 50S103E at 291200UTC .
Trough [2] developing near 17S093E 16S091E 15S090E at 290000UTC. Forecast slow
moving.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
East of line 35S080E 39S106E 50S111E, outside warning area:
Westerly quarter winds, shifting southwesterly quarter west of trough [1]. Wind
speeds 20/33 knots. Moderate to rough seas. Moderate to heavy swell.
Within 120nm south of trough [2]:
Southeasterly quarter winds 20/33 knots developing south of trough [2] from
290000UTC. Moderate to rough seas. Low to moderate swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Moderate to heavy swell,
decreasing to low to moderate north of line 33S115E 34S101E.
Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of
troughs. 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 Sunday.
