IDY21090 40:2:1:04:70S100E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology, BNOC At 1144UTC 11 December 2023 STORM FORCE WIND WARNING FOR WESTERN AND SOUTHERN AREAS SITUATION AT 1200UTC Vigorous flow associated with a low 974hPa near 56S111E. Forecast low 970hPa near 58S117E at 111800UTC, 971hPa near 60S126E at 120000UTC, 968hPa near 61S138E at 120600UTC, and 968hPa near 60S150E at 121200UTC, AREA AFFECTED Bounded by 51S109E 55S107E 59S119E 58S151E 54S151E 54S130E 51S109E. FORECAST Clockwise winds within 360nm of low in northern semicircle. Wind speeds 34/47 knots, increasing to 45/55 knots with 120nm of low until 120300UTC. Very rough to high seas rising to very high with storm force winds. Moderate to heavy swell. 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. The next alert will be issued by 1900 UTC 11 December 2023