Parts of the Australian outback have picked up a month's worth of rain during the last 24 hours. A low pressure system and upper trough caused rain and storms over South Australia last night, before spreading into northwest New South Wales and southwest Queensland today. This regions has experienced drier-than-usual conditions during the last two months, which came as a remarkable turnaround after record-breaking rainfall through the middle of the year. Arkaroola in South Australia picked up 18mm in the last 24 hours, which is more rain than the last two and a half months combined. Moomba (17mm) and Leigh Creek (7mm) also received their heaviest rain since September during the 24 hours to 9am today. In New South Wales, White Cliffs had received 42mm between 9am and 4pm today, the heaviest rain in over four years and the heaviest for December in a least 12 years. Broken Hill registered 26mm in the gauge prior to 9am, which is more than the entire December average rainfall and the heaviest fall in three months. In Queensland, Thargomindah's 19mm as of 3:30pm today is the heaviest rain in three months and the heaviest for December in five years. A severe thunderstorm warning was also issued in the state's southwest this afternoon for damaging winds and heavy rain in parts of the Channel Country and adjacent districts. Showers and storms will continue to spread further east over Queensland and New South Wales on Friday and Saturday. Some of these are likely to be severe, so stay up to date with the latest warnings.