FQAU23 AMMC 220900

IDY10220

SECURITE



High Seas Forecast for Western METAREA 10

12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E



Issued by the Australian Government Bureau of Meteorology

For 24 hours commencing 1100 UTC 22 May 2026



Part 1 Warnings

Refer to latest warnings for boundary of affected area and type of weather

system.



Melbourne Gale Warning 6.



Part 2 Situation at 220600 UTC

Cold front [1] near 32S128E 38S130E 43S130E. Forecast near 31S132E 38S135E

46S135E 50S138E at 231200UTC, east of area.



Cold front [2] 40S095E 50S103E. Forecast 46S123E 50S129E at 231200UTC.



Trough [1] 32S088E to low [1] 1000hPa near 39S095E. Forecast 39S106E 40S110E to

low [1] 1014hPa near 43S113E at 231200UTC.



Warm front 28S083E 31S081E to low [2] 1011hPa near 31S077E. Forecast warm front

39S104E 40S097E to low 992hPa near 39S094E at 231200UTC.



Forecast trough [2] near 37S073E 45S075E 49S070E at 221500UTC, entering from

west, then near 34S083E 43S083E 47S079E at 231200UTC.



Part 3 Forecast

Refer to latest warnings for details of the area affected.



South of line 30S080E 27S090E 42S124E 50S129E, outside warning areas:

Northwesterly quarter winds shifting southwesterly quarter within 480nm west of

cold front [2] and 240nm of cold front [1], shifting easterly quarter within

120nm south of warm front, northeasterly quarter within 300nm of trough [2],

and turning clockwise within 90nm of lows. Wind speeds 20/33 knots. Rough to

very rough seas. Moderate to heavy swell.



Remainder:

Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell.



Rain areas, scattered showers and isolated thunderstorms mainly within 180nm of

trough/fronts and within 180nm of lows, and north of line 20S090E 18S123E.

Visibility reducing below 2nm in precipitation.



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.



WEATHER MELBOURNE



The next routine forecast will be issued at 21:00 UTC Friday.