Australia: Severe weather forecast over southeastern regions through at least June 1

Severe weather is forecast across parts of southeastern Australia through at least June 1. A large weather front and associated rain band are moving west to east across the Australian continent and are expected to produce wet and windy weather over large parts of the country over the coming days, with the most severe weather likely over elevated parts of southeastern Australia. Heavy downpours may trigger flooding in low-lying areas, and strong winds may cause power outages and property damage.

As of May 29, the Bureau of Meteorology has issued a severe weather warning for damaging winds and heavy rainfall for parts of the Central, East Gippsland, South West, North Central, North East, West and South Gippsland, and Wimmera forecast districts in Victoria. Winds gusting over 100 kph (62 mph) are possible in elevated parts of the region May 30-31. Six-hourly rainfall totals of 5-7 cm (2-2.8 inches) are possible in the northeastern ranges late May 30-early May 31. A severe weather warning for damaging winds has been issued for the Snowy Mountains and South West Slopes forecast districts in New South Wales. Winds gusting up to 130 kph (81 mph) are expected in the highest elevations of the region late May 30-early May 31. Another severe weather warning for damaging winds has been issued for parts of the East Coast forecast district in Tasmania. Winds gusting up to 100 kph (62 mph) are expected in the area early May 30 before easing; however, the BOM has warned that a low-pressure system will bring further strong winds to Tasmania May 31. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rain has saturated the soil.

Floodwaters and debris flows may render further bridges or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas with heavy rainfall and potential track inundation. Severe weather could also trigger flight delays and cancellations at regional airports.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities, possible evacuations, and employees' inability to reach work sites. Electricity and telecommunications service disruptions are possible where significant flooding, strong winds, or landslides impact utility networks.