Western Area High Seas Forecast


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 12 August 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
Refer to latest warnings for details of the area affected.

Melbourne Storm Force Wind Warning 5.
Melbourne Gale Warning 8.

Part 2 Situation at 0600 UTC
Ridge from high 1021hPa 31S104E to 48S115E 56S136E. Forecast from high 1020hPa
29S112E to 46S117E 53S137E at 131200UTC.

Cold front [1] 29S072E 39S085E 45S090E to low [1] 983hPa 47S083E. Forecast
30S102E 44S102E 58S114E at 131200UTC.

Cold front [2] developing from west, forecast 25S090E 33S098E to low [2] 995hPa
39S098E at 131200UTC.

Cold front [3] developing from west, forecast 26S083E 33S089E to low [3]
1006hPa 36S086E at 131200UTC.

Part 3 Forecast
Refer to latest warnings.

West of ridge, south of line 26S090E 29S112E, outside warning areas:
Northwest quarter winds east of fronts [1] and [2], shifting westerly quarter
east of front [3] and southwest quarter west of front [3]. Clockwise winds
within 180nm of lows. Wind speeds 20/33 knots. Moderate to rough seas. Moderate
to heavy swell.

Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of fronts
and 300nm of lows. Visibility reducing below 2nm in precipitation.


The next routine forecast will be issued at 21:00 UTC Wednesday.