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 1100 UTC 19 June 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 7.
Part 2 Situation at 190600 UTC
Trough [1] near 16S090E to low [1] 1011hPa near 23S092E. Forecast near 20S095E
to low [1] 1014hPa near 25S097E to 26S100E at 201200UTC.
Trough [2] near 35S094E to low [2] 1002hPa near 39S095E to 41S099E. Forecast
near 38S110E to low [2] 995hPa near 49S111E at 200000UTC.
Cold front near 40S076E 45S080E 50S093E. Forecast cold front near 45S087E
48S091E at 191900UTC, then decaying.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
Within 210nm of line 24S092E 27S097E and 120nm of line 21S115E 17S122E:
Easterly quarter winds, shifting clockwise within 120nm of low [1]. Wind speeds
20/30 knots. Rough seas. Moderate swell increasing to heavy within 240nm of
line 22S090E 19S100E.
Within 300nm of line 35S093E 47S120E:
Southeasterly quarter winds west of trough [2], shifting northerly quarter east
of trough [2]. Clockwise winds within 180nm of low [2]. Winds 20/30 knots.
Rough seas. Moderate to heavy swell.
South of line 39S080E 47S103E 50S105E:
Northwesterly quarter winds 20/30 knots, shifting southerly quarter south of
cold front. Rough seas. Heavy swell.
Remainder, outside warning areas:
Winds not exceeding 25 knots. Rough to very rough seas. Low to moderate swell
increasing to moderate to heavy swell south of line 45S093E 48S102E.
Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of
front, troughs and lows. Heavy at times within 120nm of troughs [1] and [2].
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 Friday.
