27 Jan 2023 | 08:47 AM UTC
Australia: Adverse weather forecast across parts of southeastern Western Australia and western South Australia through at least Jan. 28
Heavy rainfall forecast across parts of Western and South Australia through at least Jan. 28. Flooding and associated disruptions possible.
Event
Thunderstorms and heavy rainfall are forecast over parts of southeastern Western Australia and western South Australia through at least Jan. 28. As of late Jan. 27, the Bureau of Meteorology (BoM) has issued severe weather warnings for heavy rainfall for parts of South Interior and Eucla districts in Western Australia and West Coast and North West Pastoral districts in South Australia. Affected locations include Warburton, Maralinga, Oak Valley, Cook, Nullarbor, the area around Emu Junction, and parts of the Great Victoria Desert. Six-hourly rainfall totals of 1.5-4 cm (0.6 to 1.6 inches) are expected across the affected areas, with isolated higher totals of up to 7 cm (2.8 inches). The heavy downpours could lead to flash flooding and may be accompanied by thunderstorms and strong wind gusts. Officials could update and possibly extend the coverage of weather alerts over the coming hours and days.
Hazardous Conditions
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 stormwater drainage systems. Sites located 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 rainfall has saturated the soil.
Authorities could issue mandatory evacuation orders for flood-prone communities. Disruptions to electricity and telecommunications services are possible where significant flooding or landslides impact utility networks.
Transport
The severe weather will likely contribute to transport disruptions throughout the region. Traffic and commercial trucking delays could occur along regional highways. Flooding downpours could inundate some low-lying roads in areas with poor drainage. Strong winds may also pose a hazard to high-profile vehicles. Hazardous weather conditions may cause flight delays and cancellations at airports in the affected region.
Advice
Monitor local media for updated emergency and weather information. Seek updated information on weather and road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas. Charge battery-powered devices in the case of prolonged electricity outages.
