IDY10250
SECURITE
High Seas Forecast for Southern METAREA 10
SOUTHERN AREA: 50S80E TO 50S160E TO ICE EDGE
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 2300 UTC 21 July 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 10.
Melbourne Gale Warning 11.
Part 2 Situation at 211800 UTC
Cold front [1] 50S139E to low [1] 974hPa near 52S139E. Forecast cold front [1]
50S167E 58S170E to low [1] 958hPa near 61S155E at 230000UTC.
Trough [1] near 56S140E 60S146E 63S148E. Forecast 61S151E 64S153E at 220600UTC,
then weakening thereafter.
Trough [2] forecast to develop near 50S141E 54S146E 56S147E at 221200UTC, then
near 50S148E 55S154E 59S154E at 230000UTC.
Warm front near 50S082E 51S087E. Forecast 50S119E 58S105E 63S096E at 230000UTC.
Low [2] 989hPa near 50S082E. Forecast low [2] 986hPa near 53S087E at 220600UTC,
and weakening thereafter.
Cold front [2] forecast to enter area from the north near 50S086E 53S087E at
220600UTC. Cold front [2] near 50S100E 55S102E 63S096E at 230000UTC.
Cold front [3] forecast to enter area from the west near 50S081E 52S085E at
221800UTC. Cold front [3] near 50S086E 54S092E at 230000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
Whole area, outside warning areas:
Southwesterly quarter winds, shifting northwesterly quarter east of cold front
[1] and trough [2], within 480nm east of cold front [2] and within 120nm of
cold front [3]. Winds shifting westerly quarter within 420nm west of cold front
[2], tending northeasterly within 240nm south of warm front and turning
clockwise within 240nm of low [1] and 120nm of low [2]. Wind speeds 20/33
knots. Rough to very rough seas. Moderate to heavy swell.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
fronts and troughs, and within 420nm of lows. Visibility reducing below 2nm in
precipitation.
Part 4 Ice edge
Approximately 59S080E 58S090E 61S100E 63S130E 62S144E 62S160E.
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.
