IDY21090 40:2:1:04:70S100E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 0549UTC 20 July 2026 GALE WARNING 10 FOR WESTERN, SOUTHEASTERN AND SOUTHERN AREAS SITUATION AT 200600UTC Vigorous flow associated with cold front near 45S105E 50S108E 61S098E. Forecast 45S108E 50S111E 61S101E at 201200UTC, 44S113E 49S116E 61S104E at 201800UTC, near 43S121E 48S121E 62S107E at 210000UTC, and 44S130E 50S131E 57S116E at 210600UTC. AREA AFFECTED Bounded by 54S087E 45S100E 43S133E 52S136E 55S118E 62S108E 61S085E 54S087E. FORECAST Southwesterly quarter winds within 600nm west of front, shifting initially westerly quarter within 360nm east of front then tending northwesterly quarter within 360nm east of the front by 210600UTC. Wind speeds 30/40 knots, increasing to 34/47 knots within 240nm west of front. Rough to very rough seas, rising to very rough to high within 240nm west of front. 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 1300 UTC 20 July 2026