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, BNOC For 24 hours commencing 2300 UTC 1 December 2015 PLEASE BE AWARE Wind gusts can be a further 40 percent stronger than the averages given here, and maximum waves may be up to twice the height. Part 1 Warnings Nil. Part 2 Situation at 1800 UTC Refer to latest warnings. Ridge  30S090E 36S110E 37S122E to high  1025 hPa near 36S129E, forecast from high  1022 hPa near 30S090E to 35S107E 38S115E 36S129E at 020600UTC and 27S090E 41S122E 39S129E at 021800UTC. Ridge  36S080E 39S092E, forecast 36S080E 37S097E at 020600UTC and 33S080E 35S092E 42S108E at 021800UTC. Ridge  forecast near 36S080E 50S084E at 020600UTC and 33S080E to high  1029 hPa near 37S082E to 50S095E at 021800UTC. Cold front 30S080E 40S098E 45S102E 50S107E, forecast 30S084E 35S097E 41S106E 47S113E 50S119E at 020600UTC and 30S090E 33S101E 38S110E 50S125E at 021800UTC. Trough south of area forecast 45S106E 50S113E at 021800UTC. Part 3 Forecast Refer to latest warnings. Within 180nm of ridges and 240nm of high: Variable winds below 20 knots tending S quarter 10/20 knots along ridge  and W quarter 10/20 knots along ridge . Slight to moderate seas. Low to moderate swell increasing to moderate to heavy swell south of 33S. Remainder north of ridge : W quarter winds west of 117E, south of 30S. SE quarter winds remainder tending SW quarter east of line 12S105E 23S108E 27S114E and becoming S quarter east of 36S112E 27S104E 20S105E. Wind speeds 15/25 knots west of 100E and also in area south of 20S increasing 20/30 knots at times east of line 36S112E 27S104E 20S105E with moderate to rough seas. Winds easing 10/20 knots remainder with seas abating slight to moderate. Low to moderate swell. Remainder south of ridge : NW quarter winds tending SW quarter west of cold front, south of ridge  east of ridge  and S quarter north of ridge . Wind speeds 15/25 knots increasing to 20/30 knots east of cold front south of 39S and west of cold front within 90nm of front at times. Winds tending E quarter 15/25 knots remainder west of 90S north of ridge  and becoming NW quarter 20/30 knots remainder west of ridge  reaching 25/33 knots at times in the far SW after 020900UTC. Moderate to rough seas. Moderate to heavy swell. Rain areas, scattered showers and isolated thunderstorms within 240nm of cold front and trough. Scattered showers remainder south of 40S. Isolated showers north of ridge . Visibility reducing below 2nm in precipitation. WEATHER MELBOURNE The next routine forecast will be issued at 08:00 UTC Wednesday.