Australian Government Bureau of Meteorology Northern Territory TOP PRIORITY FOR IMMEDIATE BROADCAST Severe Weather Warning for Heavy Rainfall for parts of Arnhem district. Issued at 4:49 pm Thursday, 18 December 2025. Heavy rainfall developing over the eastern Arnhem with a tropical low on Friday. Weather Situation Tropical low 07U is expected to move southwards on Thursday and approach the northeast Arnhem coast on Friday morning, bringing with it a risk of heavy rainfall with showers and thunderstorms. The low is expected to continue tracking southwards into Saturday and may bring a heavy rainfall risk to parts of the Carpentaria. HEAVY RAINFALL for the following areas: Arnhem HEAVY RAINFALL which may lead to FLASH FLOODING is forecast for the eastern Arnhem including Groote Eylandt on Friday. Northern parts of the warning area may experience heavy rainfall from early Friday morning, before the risk shifts southwards into the afternoon and evening. Isolated six-hourly rainfall totals between 150 to 180 mm are possible. Locations which may be affected include Nhulunbuy, Alyangula, Galiwin'ku, Gapuwiyak, Numbulwar and Birany Birany. 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 The next Severe Weather Warning will be issued by 11:00 pm ACST Thursday. Check https://www.bom.gov.au/weather-and-climate/warnings-and-alerts. Warnings are also available through TV and Radio broadcasts or call 1300 659 210. The Bureau and Northern Territory Emergency Service would appreciate warnings being broadcast regularly.