Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

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IDD11030

Australian Government Bureau of Meteorology
Northern Territory

Coastal Waters Forecast for the Northern Territory

Issued at 4:00 pm CST on Monday 24 February 2020
for the period until midnight CST Thursday 27 February 2020.

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.

Warning Information

For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation

A monsoon trough has developed over the Top End in response to a westerly surge extending through the Arafura Sea, with Tropical Cyclone Esther located within the monsoon trough in the southern Gulf of Carpentaria. Tropical Cyclone Esther crossed the coast near the NT/Queensland border earlier today. It is expected to weaken below tropical cyclone strength this evening and move west across the Carpentaria and then Gregory Districts in coming days. As the low moves west across the Territory, winds will strengthen on the west coast of the Top End.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Monday 24 February until midnight

Strong Wind Warning for Monday for Beagle Bonaparte Coast

Winds: Westerly 20 to 25 knots, reaching up to 30 knots offshore south of Channel Point in the evening. Seas: 1.5 metres, increasing to 1.5 to 2 metres south of Channel Point. Swell: Northwesterly below 1 metre. Weather: Mostly clear.

Forecast for Tuesday 25 February

Strong Wind Warning for Tuesday for Beagle Bonaparte Coast

Winds: Westerly 20 to 25 knots, reaching up to 30 knots south of Channel Point in the evening. Seas: 1.5 to 2.5 metres. Swell: West to northwesterly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the Beagle Gulf in the afternoon.

Forecast for Wednesday 26 February

Winds: Westerly 25 to 30 knots decreasing to 20 to 25 knots early in the morning then increasing to 25 to 30 knots in the early afternoon. Seas: 2 to 3 metres. Swell: West to northwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Channel Point during the morning. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Thursday 27 February

Winds: Westerly 25 to 30 knots turning northwesterly 20 to 30 knots during the day. Seas: 2 to 3 metres. Swell: Westerly around 1 metre, increasing to 1 to 1.5 metres during the morning. Weather: Cloudy. 90% chance of rain. The chance of a thunderstorm.

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Monday 24 February until midnight

Winds: Westerly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Northwesterly below 1 metre. Weather: Mostly clear.

Forecast for Tuesday 25 February

Winds: Westerly 15 to 20 knots. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres inshore. Swell: Northwest to southwesterly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon.

Forecast for Wednesday 26 February

Winds: Westerly 15 to 20 knots turning northwesterly in the evening. Seas: 1 to 2 metres. Swell: West to southwesterly around 1 metre, increasing to 1 to 1.5 metres by early evening. Weather: Partly cloudy. The chance of a thunderstorm from the late morning.

Forecast for Thursday 27 February

Winds: Northwesterly 15 to 20 knots. Seas: 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning. Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm.

Van Diemen Gulf

Forecast for Monday 24 February until midnight

Winds: Westerly 15 to 20 knots. Seas: 1.5 to 2 metres. Swell: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Tuesday 25 February

Winds: Westerly 15 to 20 knots turning northwesterly in the late evening. Seas: 1 to 2 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Wednesday 26 February

Winds: Northwesterly 15 to 25 knots. Seas: 1.5 to 2 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm.

Forecast for Thursday 27 February

Winds: Northwesterly 15 to 20 knots turning northerly 10 to 15 knots during the evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: Below 0.5 metres. Weather: Cloudy. 80% chance of rain. The chance of a thunderstorm.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Monday 24 February until midnight

Winds: West to northwesterly 15 to 20 knots, reaching up to 25 knots east of Maningrida in the evening. Seas: 1.5 to 2 metres. Swell: West to northwesterly below 1 metre, increasing to 1 to 1.5 metres in the far north later in the evening. Weather: Mostly clear.

Forecast for Tuesday 25 February

Winds: West to northwesterly 15 to 20 knots, reaching up to 25 knots inshore early in the morning. Seas: 1.5 to 2 metres. Swell: West to northwesterly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm inshore in the afternoon and evening.

Forecast for Wednesday 26 February

Winds: Northwesterly 15 to 20 knots. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres inshore. Swell: West to northwesterly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm from the late morning.

Forecast for Thursday 27 February

Winds: Northwesterly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: West to northwesterly around 1 metre. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Monday 24 February until midnight

Winds: Northwesterly 15 to 20 knots, reaching up to 25 knots offshore south of Cape Wessel in the evening. Seas: 1.5 to 2 metres. Swell: Northwest to southwesterly 1 to 1.5 metres offshore. Weather: Partly cloudy. The chance of a thunderstorm offshore.

Forecast for Tuesday 25 February

Winds: Northwesterly 15 to 20 knots, reaching up to 25 knots offshore south of Cape Wessel early in the morning. Seas: 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning. Swell: West to northwesterly around 1 metre offshore, increasing to 1 to 1.5 metres around midday, then tending westerly around 1 metre by early evening. Weather: The chance of a thunderstorm offshore in the morning. Mostly sunny afternoon.

Forecast for Wednesday 26 February

Winds: Northwesterly 15 to 20 knots decreasing to about 10 knots in the evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon. Swell: West to northwesterly around 1 metre offshore. Weather: The chance of a thunderstorm in the far northeast in the early morning. Mostly sunny day.

Forecast for Thursday 27 February

Winds: Northwesterly about 10 knots. Seas: Below 1 metre. Swell: West to northwesterly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Tropical System Location

At 3:30 pm CST Tropical Cyclone Esther was located about 80 nautical miles west of Mornington Is and 95 nautical miles east southeast of Borroloola. Centre located near 16.8S 137.8E. Recent movement has been towards the west southwest at 7 knots.

Forecast for Monday 24 February until midnight

Gale Warning for Monday for Roper Groote Coast

Winds: South of Numbulwar: winds up to 40 knots possible depending on movement and development of Tropical Cyclone Esther. Elsewhere northwesterly 15 to 25 knots increasing to 20 to 30 knots in the late evening. Waves: South of Numbulwar: Seas and swell up to 4m. Elsewhere: Seas 2 to 2.5 metres. Swells North to northwesterly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Tuesday 25 February

Strong Wind Warning for Tuesday for Roper Groote Coast

Winds: Northwesterly 20 to 25 knots, reaching up to 30 knots during the morning. Winds tending northwest to northeasterly 15 to 25 knots in the middle of the day. Seas: 1.5 to 2.5 metres. Swell: North to northwesterly around 1 metre east of Groote Eylandt. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm.

Forecast for Wednesday 26 February

Winds: Northerly 15 to 25 knots. Seas: 1.5 to 2 metres, decreasing to 1 to 1.5 metres around midday. Swell: North to northwesterly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Thursday 27 February

Winds: Northerly 15 to 20 knots decreasing to about 10 knots during the morning. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Swell: Northerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

Darwin Harbour

Forecast for Monday 24 February until midnight

Winds: Westerly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Tuesday 25 February

Winds: Westerly 15 to 25 knots. Seas: 1 to 2 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Wednesday 26 February

Winds: Westerly 20 to 25 knots turning northwesterly in the late afternoon. Seas: 1.5 to 2.5 metres. Swell: Northwesterly below 1 metre. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm.

Forecast for Thursday 27 February

Winds: Northwesterly 15 to 25 knots tending northerly 10 to 15 knots during the evening. Seas: 1.5 to 2.5 metres. Swell: Northwesterly below 1 metre. Weather: Cloudy. 90% chance of rain. The chance of a thunderstorm.

The next routine forecast will be issued at 4:45 am CST Tuesday.

* Calls to 1300 number cost around 27.5c inc. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine

Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones.