IDY10210 SECURITE High Seas Forecast for South Eastern Metarea 10 SOUTHEASTERN AREA: 28S/50S, 129E/170E Issued by the Australian Government Bureau of Meteorology, BNOC For 24 hours commencing 2300 UTC 18 January 2017 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 Refer to latest warnings for details of the area affected. New Zealand Storm Warning 173 New Zealand Gale Warning 174. Part 2 Situation at 1800 UTC Refer to latest warnings for boundary of affected area and type of weather. Cold front  28S154E 30S156E 33S165E 37S170E. Forecast 27S158E 27S170E 30S175E at 191200UTC and 25S165E 28S173E 29S175E at 200000UTC. Trough developing near 37S145E 40S144E 43S146E at 190000UTC. Forecast 30S151E 38S148E to low 991 hPa near 41S148E to 46S147E at 200000UTC. Part 3 Forecast Refer to latest warnings. East of 140E, outside warning area: Northwesterly quarter winds 20/30 knots east of cold front , turning Southwesterly quarter winds 20/33 knots southwest of cold front . Winds variable below 20 knots west of 155E by 190600UTC and northwest of a line 40S170E 47S166E 50S160E by 200000UTC. Winds becoming northeast quarter 20/33 knots within 240nm east of trough, extending to within 360nm east of trough after 191200UTC. Winds southerly quarter 20/30 knots west of trough. Winds clockwise 20/33 knots within 240nm of low. moderate to rough seas. Moderate to heavy swell. Remainder west of 140E. Southeasterly quarter winds 15/25 knots north of a line 34S129E 40S140E. Northeasterly quarter winds 15/25 knots southwest of a line 45S129E 50S139E, extending to be southwest of a line 40S129E 45S136E 50S139E by 200000UTC. Slight to moderate seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms within 300nm of cold front, low and trough. Visibility reducing below 2nm in precipitation. WEATHER MELBOURNE The next routine forecast will be issued at 08:00 UTC Thursday.