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 20 January 2026
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 2.
Melbourne Gale Warning 3.
Part 2 Situation at 200600 UTC
Trough [1] 27S090E 31S094E to low 1004hPa near 35S093E to 39S097E 41S104E.
Forecast trough [1] near 32S098E to low 1007hPa near 38S100E to 43S100E at
210600UTC, then decaying thereafter.
Forecast cold front west of area, forecast to enter near 44S080E 50S085E at
201200UTC. Forecast near 33S104E 41S104E 50S103E at 211200UTC.
Tropical low (16U) 998hPa near 12S124E. Forecast slow moving.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
South of line 33S080E 31S100E 48S128E, outside warning areas:
Northwesterly quarter winds, shifting southwesterly quarter west of cold front,
and within 240nm of trough, turning clockwise within 300nm of low. WInd speeds
20/33 knots. Rough to very rough seas. Moderate to heavy swell.
WIthin 120nm of line 22S101E 29S101E:
Southerly quarter winds 20/30 knots developing from 210600UTC. Moderate to
rough seas. Moderate swell.
Within 120nm of line 40S117E 35S117E:
Easterly quarter winds 20/30 knots. Moderate to rough seas. Moderate to heavy
swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell,
increasing to moderate to heavy south of 23S.
Rain areas, scattered showers and isolated thunderstorms mostly within 360nm of
front and lows, within 180nm of trough. Heavy at times north of line 13S114E
17S125E. 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 20:00 UTC Tuesday.
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 1100 UTC 20 January 2026
Part 1 Warnings
Refer to latest warnings for details of the area affected.
NIl.
Part 2 Situation at 200600 UTC
Low [1] 994hPa near 37S163E. Forecast low [1] 994hPa near 37S164E at 210600UTC,
then east of area thereafter.
Trough [1] near 25S163E 28S165E 32S170E. Forecast trough [2] near 24S170E
28S172E 32S173E at 211200UTC.
Low [2] north of area, forecast to enter 993hPa near 25S163E at 201200UTC.
Forecast low [2] 991hPa near 25S163E at 210600UTC, east of area thereafter.
Cold front near 46S142E 50S145E. Forecast near 38S148E 50S155E at 211200UTC.
Part 3 Forecast
Refer to latest warnings for boundary of affected area and type of weather
system.
East of line 25S153E 33S169E:
Southeasterly quarter winds shifting northerly quarter north of trough. Wind
speeds 20/30 knots. Rough seas. Moderate swell to heavy swell.
North of line 33S131E 37S137E 37S140E:
Southerly quarter winds. Wind speeds 20/30 knots. Rough seas. Low to moderate
swell.
South of line 39S141E 39S153E:
Northerly quarter winds shifting southwesterly quarter within 240nm of cold
front. Wind speeds 20/33 knots. Rough to very rough seas. Moderate swell.
East of line 35S156E 40S157E 43S162E, outside warning areas:
Southeasterly quarter winds turning clockwise within 360nm of low in
southeastern semicircle. 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,
increasing to moderate to heavy west of line 37S129E 46S135E 50S135E.
Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of
front, trough and low. Heavy at times within 180nm of trough and 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 20:00 UTC Tuesday.
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 1100 UTC 20 January 2026
Part 1 Warnings
Nil.
Part 2 Situation at 200600 UTC
Trough near 15S148E 15S152E 18S160E 25S163E. Forecast near 14S154E 25S167E at
211200UTC.
Tropical low (14U) 996hPa near 18S160E. Forecast tropical low (14U) 993hPa near
25S163E at 211200UTC, and south of area thereafter.
Forecast low developing near low 999hPa near 16S158E at 210000UTC, then low
1001hPa near 20S162E at 211200UTC.
Part 3 Forecast
North of line EQ150E 14S170E:
Winds not exceeding 20 knots. Slight to moderate seas. Low swell.
Remainder:
Northwesterly quarter winds shifting southeasterly south of trough and turning
clockwise within 360nm of low (14U). Wind speeds 15/25 knots, increasing to
20/30 knots within 360nm east of trough, and within 360nm of low in
northeastern semicircle. Moderate to rough seas. Low swell, increasing to low
to moderate south of line 10S147E 11S155E 11S170E.
Rain areas, scattered showers and isolated thunderstorms throughout most of
area. Heavy at times within 240nm north of trough and 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 20:00 UTC Tuesday.
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 1100 UTC 20 JANUARY 2026
PART 1 WARNINGS
NIL.
PART 2 SITUATION AT 200600 UTC
TROPICAL LOW (16U) 999HPA NEAR 12S124E. FORECAST SLOW MOVING.
PART 3 FORECAST
NORTH OF LINE EQ090E 03S100E 04S119E EQ120E AND SOUTH OF LINE 09S090E
09S100E
12S107E:
WINDS NOT EXCEEDING 20 KNOTS. SLIGHT TO MODERATE SEAS. LOW SWELL,
INCREASING TO
LOW TO MODERATE WEST OF 100E.
REMAINDER:
NORTHWESTERLY QUARTER WINDS, TURNING CLOCKWISE WITHIN 120NM OF
TROPICAL LOW
(16U). WIND SPEEDS 15/25 KNOTS, INCREASING TO 20/30 KNOTS WITHIN
180NM OF LINE
07S119E 08S132E 10S142E. MODERATE TO ROUGH SEAS. LOW SWELL,
INCREASING TO LOW
TO MODERATE SOUTH OF LINE EQ090E 04S102E 07S106E 09S120E.
RAIN AREAS, SCATTERED SHOWERS AND THUNDERSTORMS THROUGHOUT MOST OF
AREA. HEAVY
AT TIMES WITHIN 120NM OF LINE 03S090E 11S118E 11S141E. 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 19:15 UTC TUESDAY.=