IDY10210
SECURITE
High Seas Forecast for South Eastern METAREA 10
SOUTH EASTERN AREA: COAST AT 25S TO 25S170E TO 29S170E TO 45S160E TO 50S160E TO
50S129E TO COAST AT 129E
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 2300 UTC 12 August 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Storm Force Wind Warning 10.
Melbourne Storm Force Wind Warning 12.
Part 2 Situation at 121800 UTC
Cold front [1] 41S147E 47S152E 50S151E, forecast 43S156E 47S160E at 130600UTC,
then moving east of area.
Cold front [2] west of area near 45S114E to low 991hPa near 50S129E to warm
front 47S138E at 130000UTC, forecast becoming just cold front [2] near 44S129E
48S144E 50S147E at 131200UTC, then 44S150E 49S160E at 140000UTC.
Trough [1] 30S163E 39S162E, forecast 26S169E 33S170E at 131200UTC, then moving
east of area.
Trough [2] developing near 33S169E 33S165E at 140000UTC.
Trough [3] developing near 43S135E 48S129E at 140000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
Between line 40S140E 42S154E 35S155E and the Australian mainland:
Westerly quarter winds tending southwesterly quarter north of 38S. Winds speeds
25/30 knots. Rough seas. Moderate to heavy swell.
South of line 45S160E 42S154E 40S140E 40S129E, outside warning areas:
Westerly quarter winds, tending northwesterly quarter east of cold front [1]
and between cold front [2] and warm front, tending northerly quarter south of
warm front and trough [3], and turning clockwise within 120nm of low. Winds
speeds 25/33 knots. Rough to very rough seas. Heavy swell.
East of line 31S165E 35S165E:
Winds initially not exceeding 25 knots, becoming southerly quarter winds 20/30
knots after 131800UTC. 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 swell north of line 35S150E 35S155E 41S163E.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
fronts/troughs and within 240nm of the New South Wales coast. 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 09:00 UTC Thursday.
