A low pressure system and a final pulse of the monsoon trough in the tropics has brought some heavy rainfall totals throughout the Easter holiday in the NT. In the 24 hours to 9am Monday, Katherine gained more than 120mm of rain, with three times the monthly average dumping in one night. This makes it the heaviest March rain in 29 years of records. Out of the 31 days in March, it rained in Darwin for 28 of them. Over the last five days in Darwin a total of 153.6mm has fallen. While in Maningrida, 100mm fell in 24 hours to Monday. Over the last five days, over 550mm has fallen, making it the wettest five day spell in at least ten years. A major flood warning has been issued for the Waterhouse River near Beswick Bridge as well as a minor flood warning for the Katherine River Gorge Rd. Flood advice is also in place for residents of the Arnhem, Darwin-Daly, northern Roper-McArthur and northern Victoria River. The low pressure system which has been the main contributor to the rainfall this week will contract to the west, causing a gradual easing of rain. At this stage it is too early to tell when it will be safe to leave the umbrella at home for northern NT residents.