Rain has closed many roads and there is some flooding as ex-cyclone Trevor passed through the Barkly region yesterday and overnight.
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The former cyclone brought 24 hour rainfall totals of more than 100mm to locations to the south east of Tennant Creek, leading to the closure of many roads in the area
The tropical low is now about 250km to the south east of Tennant Creek, moving south then south east towards Queensland, and more very heavy rainfall is forecast for today and overnight tonight.
The Bureau of Meteorology says widespread 24 hour rainfall totals in the 70-150mm range are forecast for the southeast Barkly district and northeast Simpson district, with daily totals in the 150-300mm range possible in some locations in the area - flash flooding is expected over large areas.
The black soils of the Barkly are baked hard because of the long dry which experts say is causing increased run off.
Jervois Station, in the northeast Simpson district recorded a 24 hour total of 85.8mm to 9am this morning, and more than 50mm from 9am to lunchtime today - the heavy rain is expected to continue for the remainder of today, into this evening and overnight.
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A severe weather warning is current for damaging and possibly destructive winds along with the heavy rainfall in south-eastern areas of the NT.
A flood watch is current for the Carpentaria Coastal Rivers, Georgina River, Simpson Desert and the Barkly as the system will lead to significant stream rises and localised flooding - many roads in the area are currently impassable due to the rainfall.
The tropical low is expected to track slowly away from the NT overnight, and be located in Queensland by around lunchtime tomorrow which means conditions will ease for the NT during the day tomorrow.
Tennant Creek escaped the heaviest of the rainfall, with 13.2mm to 9am today and wind gusts of around 50kmh at lunchtime yesterday - conditions are now clear, and there is only a slight chance of showers or storms for the rest of this week, with maximum temperatures at around 30°C.
Darwin has seen some good rainfall during the past few days, a total of 89.4mm since Friday - there's a high chance of showers and storms for the Darwin region for most of this week.
Darwin Airport has now recorded 1012mm this wet season, still well below average (1689mm), but this will not be the worst wet season on record where only 1038.2mm was recorded in 1991/92.
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