An upper-level pool of cold air is driving tropical moisture across five Australian states this week, triggering widespread severe weather alerts. As part of this broader system, the Bureau of Meteorology issued a severe weather warning on Tuesday morning for Tasmania’s east and north-east coastal districts, forecasting heavy rain and flash flooding beginning early Wednesday.
A low-pressure system forming in the Tasman Sea late Tuesday is expected to deliver six-hourly rainfall totals between 30 and 50 millimeters, with localized pockets reaching 80 millimeters. Over a 24-hour period, coastal areas could see up to 100 millimeters of rain, while isolated spots may record as much as 150 millimeters.
The State Emergency Service has directed preparation efforts across several municipalities. Storm advice was issued for residents in St Helens, Swansea, Scottsdale, Bicheno, Orford, Fingal, and Scamander, according to a Pulse Tasmania report detailing the severe weather warning and rainfall estimates.
Emergency responders are urging locals to clear property gutters and secure loose objects ahead of the storm’s arrival. Residents have been warned to anticipate hazardous driving conditions and prepare for potential power outages across the TasNetworks grid.
Bureau of Meteorology meteorologists noted the downpour follows an exceptionally dry autumn across the region. While the incoming rain provides immediate water relief to inland farmlands, the parched ground conditions reduce initial water absorption rates, elevating the immediate risk of rapid surface runoff and flash flooding across affected coastal towns.