Western Area High Seas Forecast

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 18 January 2021

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 1.

Part 2 Situation at 0600 UTC
Cold front [1] 32S084E 35S092E 41S099E 50S106E. Forecast 50S120E 47S120E
38S115E at 191200UTC.

Trough 45S089E 48S089E. Forecast south of area at 191200UTC.

Cold front [2] approaching west of area. Forecast 49S080E 48S089E 40S080E at
191200UTC.

Part 3 Forecast
Refer to latest warnings.

South of line 39S080E 47S120E 50S124E, outside warning areas:
Westerly quarter winds, shifting northwesterly quarter east of front [1],
northwesterly quarter west of front [2], and easterly quarter south of front
[2]. Northwesterly quarter winds within 180nm east of trough, and northwesterly
winds within 300nm east of front [2].
Wind speeds 25/33 knots. Rough to very rough seas. Moderate to heavy swell.

Within area enclosed by 35S120E 37S120E 37S112E 35S112E 35S120E:
Northeasterly quarter winds 20/30 knots easing below 25 knots after 181800UTC.
Rough seas. Moderate swell.

Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell.

Rain areas, scattered showers and isolated thunderstorms within 180nm of front
[1] and trough, and within 300nm of cold front [2]. Widespread showers and
scattered thunderstorms north of line 25S090E 18S096E 16S125E. Isolated showers
elsewhere. Visibility reducing below 2nm in precipitation.

WEATHER MELBOURNE

The next routine forecast will be issued at 20:00 UTC Monday.