Source: Bureau of Meteorology

For people in parts of Lasseter and Tanami districts.

Issued at 4:21 am Monday, 31 March 2025.

Heavy rainfall and possible damaging wind gusts across parts of the southwest, easing on Monday evening.

Weather Situation: The remnants of ex-Tropical Cyclone Dianne continue to move to the southeast through the Northern Interior of Western Australia. A surface trough extends to the east of the weakening system and will likely aid in the development of scattered showers and isolated thunderstorms over parts of the Tanami and Lasseter districts during Monday.

HEAVY RAINFALL which may lead to FLASH FLOODING is forecast to develop during Monday in parts of the Tanami and Lasseter districts. Six-hourly rainfall totals of 30 to 50 mm are likely and isolated totals up to 90 mm are possible. 24-hourly totals of 40 to 70 mm are likely, with isolated daily falls possibly reaching up to 150 mm.

DAMAGING WIND GUSTS up to 90 km/h are possible in any thunderstorms within the warning area.

Conditions are expected to ease during Monday evening.

Locations which may be affected include Yuendumu, Walungurru, Rabbit Flat, The Granites, Nyirripi and south west Tanami District near WA border.

A Flood Watch has been issued for southwest parts of the NT. For more details, visit http://www.bom.gov.au/nt/warnings/

The Northern Territory Emergency Service advises that people should:
* secure loose outside objects and seek shelter when conditions deteriorate
* pull over if it is raining heavily and you cannot see, park with your hazard lights on until the rain clears
* avoid driving into water of unknown depth and current
* create your own sandbags if there is flooding, by using pillow cases or shopping bags filled with sand and place them around doorways to protect your home
* stay away from flooded drains, rivers, streams and waterways
* ensure pets and animals are safe
* be prepared in case of power outages, have an emergency kit with a radio, torch, spare batteries and first aid kit
* for emergency help in floods, storms and cyclones, contact the NTES on 132 500. For more safety tips visit www.securent.nt.gov.au