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 2300 UTC 18 February 2026
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Storm Force Warning 6.
Melbourne Gale Warning 5.
Part 2 Situation at 181800 UTC
Cold front [1] 39S100E 47S111E 50S109E. Forecast near 39S126E 44S129E at
192100UTC, then moving east of area.
Forecast cold front [2] entering area from west near 46S080E 50S083E at
190000UTC, and near 40S094E 43S104E 48S110E 50S110E at 200000UTC.
Warm front near 45S120E 48S115E to developing low [2] 984hPa near 49S112E.
Forecast near 47S129E 49S125E to low [2] 980hPa near 50S120E at 190300UTC, then
moving south of area.
Trough north of area near 11S101E low [1] 1006hPa near 12S105E. Forecast
12S103E to low [1] near 14S106E at 200000UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 42S080E 39S100E 39S129E, outside of warning areas:
Westerly quarter winds, shifting northwesterly quarter 420nm east of cold front
[1], within 300nm east of cold front [2], and north of warm front, shifting
northeasterly quarter south of warm front. Winds turning clockwise within 90nm
of low [2]. Wind speeds 25/33 knots. Rough to very rough seas. Moderate to
heavy swell.
West of line 24S110E 29S110E 34S114E:
Southerly quarter winds 20/30 knots. Rough seas. Moderate swell.
Remainder:
Winds not exceeding 25 knots. Slight to moderate seas. Low to moderate swell.
Rain areas, scattered showers and isolated thunderstorms within 120nm of
fronts, lows and north of line 18S090E 14S119E 20S121E. Heavy at times 120nm of
low [1] and trough. 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 08:00 UTC Thursday.
IDY10230
SECURITE
High Seas Forecast for North Eastern METAREA 10
NORTHEASTERN AREA: EQUATOR TO 25S, 142E TO 170E
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 2300 UTC 18 February 2026
Part 1 Warnings
Nil.
Part 2 Situation at 181800 UTC
Trough 16S159E 17S162E to low 1008hPa near 19S164E to 20S170E. Forecast trough
16S161E to low 1009hPa near 19S167E to 21S170E at 200000UTC.
Part 3 Forecast
South of line 20S159E 19S167E 20S170E:
Northwesterly quarter winds north of trough, shifting southeasterly quarter
south of trough, and turning clockwise within 60nm of low. Wind speeds 15/25
knots. Moderate to rough seas. Low to moderate swell.
West of line 20S155E 23S152E:
Easterly quarter winds 15/25 knots developing from 190000UTC. Moderate to rough
seas. Low swell.
Remainder:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Rain areas, scattered showers, and isolated thunderstorms throughout most of
area. Heavy at times within 120nm of low and within 120nm of line 22S150E
19S156E. 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 08:00 UTC Thursday.
IDY10210
SECURITE
High Seas Forecast for South Eastern METAREA 10
SOUTH EASTERN AREA: COAST AT 25S TO 25S170E TO 29S170E TO 45S160E TO 50S160E TO
50S129E TO COAST AT 129E
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 2300 UTC 18 February 2026
Part 1 Warnings
Refer to latest warnings for boundary of affected area and type of weather
system.
Melbourne Gale Warning 3.
Part 2 Situation at 181800 UTC
Cold front near 33S151E 35S156E 41S161E 50S157E. Forecast near 33S156E 33S165E
34S167E at 191200, decaying.
Trough [1] near 33S152E 34S158E 38S165E. Forecast near 32S164E 33S170E at
200000UTC,
Trough [2] near 42S143E 46S149E 50S150E. Forecast near 38S161E 42S165E at
191200UTC, then moving east of area.
Trough [3] near 45S139E 50S142E. Forecast near 45S158E 50S160E at 191200UTC.,
then moving east of area.
Forecast cold front entering area from west near 45S129E 50S132E at 191800UTC,
and near 40S130E 50S139E at 200000UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 40S129E 42S143E 39S145E 38S151E 41S163E, outside warning areas:
Westerly quarter winds, shifting northwesterly quarter within 600nm east of
cold front and within 180nm east of trough [2]. Wind speeds 25/33 knots. Rough
to very rough seas. Moderate to heavy swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low swell to moderate
swell, increasing to heavy south of line 39S129E 37S139E 39S144E.
Rain areas, scattered showers and isolated thunderstorms within 180nm of cold
fronts, and troughs. 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 08:00 UTC Thursday.
40:2:1:31:11:01:00
IDY10240
SECURITE
HIGH SEAS FORECAST FOR NORTHERN METAREA 8/10/11
NORTHERN AREA: EQUATOR TO 12S, 90E TO 142E AND SOUTHWARD TO COAST,
125E TO 142E
ISSUED BY THE AUSTRALIAN GOVERNMENT BUREAU OF METEOROLOGY
FOR 24 HOURS COMMENCING 2300 UTC 18 FEBRUARY 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 181800 UTC
TROUGH 10S090E 10S097E TO LOW 1006HPA NEAR 12S105E. FORECAST 06S090E
08S098E TO
LOW 1007HPA SOUTH OF AREA NEAR 14S106E AT 200000UTC.
PART 3 FORECAST
SOUTH OF LINE 05S090E 02S101E 12S111E:
NORTHWESTERLY QUARTER WINDS 15/25 KNOTS NORTH OF TROUGH, SHIFTING
SOUTHEASTERLY
QUARTER SOUTH OF TROUGH, AND TURNING CLOCKWISE WITHIN 60NM OF LOW.
MODERATE TO
ROUGH SEAS. LOW TO MODERATE SWELL.
SOUTH OF LINE 10S124E 10S117E:
WESTERLY QUARTER WINDS 15/25 KNOTS. MODERATE TO ROUGH SEAS. LOW TO
MODERATE
SWELL.
REMAINDER:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
LOW TO MODERATE SOUTH OF LINE 06S105E 10S120E.
RAIN AREAS, SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THROUGHOUT
MOST OF
AREA. HEAVY AT TIMES WITHIN 120NM OF LOW. 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 07:15 UTC THURSDAY.=