IDY21000 40:2:1:04:70S075E25090:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology, BNOC At 1805UTC 21 September 2019 GALE WARNING FOR SOUTHERN AREA 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. SITUATION AT 1800UTC Vigorous flow associated with a low 971hPa near 60S084E. Forecast low 971hPa near 61S090E at 220000UTC, low 973hPa near 62S095E at 220600UTC, low 975hPa near 63S099E at 221200UTC. AREA AFFECTED Bounded by 56S080E 52S085E 58S112E 59S112E 61S098E 61S080E 56S080E. FORECAST Clockwise winds 34/45 knots within 480nm of low in northwest semicircle, moving to northern semicircle by 220600UTC. Gales contracting to east of 105E by 221800UTC. Very rough seas. Moderate to heavy swell.