IDY10220
SECURITE
High Seas Forecast for Western METAREA 10
WESTERN AREA: 12/30S 90/125E, 30/50S 80/129E
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 1100 UTC 23 October 2020
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.
Part 1 Warnings
Melbourne Gale Warning 4.
Melbourne Gale Warning 6.
Part 2 Situation at 0600 UTC
Ridge from high 1022hPa 41S112E to 50S108E. Forecast from high 1029hPa 43S126E
to 50S127E at 241200UTC.
Cold front [1] 27S091E 34S096E 45S100E 48S097E to low [1] 990hPa near 47S090E.
Forecast 35S100E 50S105E to low [1] near 51S094E at 231800UTC and weakening.
Cold front [2] approaching from west, forecast 24S091E 47S097E to low [2]
960hPa near 51S087E at 241200UTC.
Trough slow moving near 12S091E 15S100E.
Part 3 Forecast
Refer to latest warnings.
South of line 30S090E 35S104E 45S114E 43S129E, outside warning area:
Southwesterly quarter winds east of ridge, northerly quarter winds west of
ridge, tending northwesterly quarter west of front [1] and shifting westerly
quarter west of front [2]. Clockwise winds within 240nm of lows [1] and [2].
Wind speeds 20/33 knots. Moderate to rough seas. Moderate to heavy swell.
Remainder:
Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell.
Rain areas, scattered showers and isolated thunderstorms within 120nm of
trough, 240nm of fronts and 300nm of lows. Visibility reducing below 2nm in
precipitation.
WEATHER MELBOURNE
The next routine forecast will be issued at 20:00 UTC Friday.
