Katherine, in Australia’s Northern Territory, is bracing for a second potential flood event this month as ex-Tropical Cyclone Narelle moves westward, leaving a trail of heavy rainfall and disruption in its wake. While the system has been downgraded to a tropical low, authorities are warning residents to remain vigilant as river levels continue to rise. The Bureau of Meteorology (BOM) is forecasting the Katherine River could peak above the minor flood level, but remain below major flood level at Katherine Bridge overnight.
The remnants of Narelle brought more than 200 millimeters of rain to parts of the Top End overnight, impacting communities already grappling with the aftermath of previous flooding. Despite the intensity of the rainfall, Northern Territory Chief Minister Lia Finocchiaro stated the system “moved a lot quicker” than anticipated and caused less damage than initially feared. Still, she cautioned, “we’re not out of the woods yet.”
Significant rainfall totals were recorded across the region, with Adelaide River receiving 202mm of rain, according to BOM spokesperson Jude Scott. While the water level at Adelaide River has since receded below major flood level, prolonged major flooding continues at Nauiyu / Daly River, where river heights are expected to remain elevated for the next week. Four residents in Adelaide River self-evacuated after floodwater inundated their homes, cutting off access to drinking water and electricity. A boil water alert is expected to be issued once the water supply is restored.
Emergency flood warnings remain in place for the Katherine River, Adelaide River, Waterhouse River, and Daly River, prompting authorities to urge caution for those living near these waterways. NT Fire and Emergency Services Commissioner Andrew Wharton emphasized the ongoing risks, warning of potential displacement of people and animals, property damage, and hazards posed by fast-flowing water, including the presence of crocodiles. “Floodwaters may also contain wastes, chemicals or other dangerous substances,” he added, urging vigilance for those in affected areas.
Adelaide River Faces Ongoing Challenges
Adelaide River remains a key area of concern, with floodwater closing sections of the Stuart Highway. The disruption to the water supply has prompted authorities to prepare for a boil water alert. The heavy rainfall also carries the potential for flash flooding across the entire Top End, according to Commissioner Wharton.
NT Police Commissioner Martin Dole stressed the need for extreme caution from motorists, warning against entering floodwaters. “This event is not over yet,” he stated, adding that police are fully prepared for potential further flooding in Katherine despite easing conditions. Authorities have begun planning for recovery efforts, including establishing a field hospital in Katherine East, while maintaining emergency management arrangements across the Big Rivers region.
Community Preparedness in Katherine
Residents of Katherine are demonstrating a heightened level of preparedness, having delivered more than 15,000 sandbags ahead of the potential flooding. Trent de With, a long-term Katherine business owner, noted a significant improvement in preparedness compared to the sudden inundation experienced two weeks prior. “The biggest contrast is time,” he explained. “Two weeks ago we had 24 hours notice, if you were lucky. We’ve had a week to prepare for this and rightly so — it could have absolutely decimated our town.”
De With acknowledged the community’s cautious optimism, but emphasized the need for continued vigilance. “You’re still extremely cautious, you don’t want to say out loud ‘We’re OK’,” he said. “Things can change very quickly, we could get a big downpour that’s unpredicted.”
Authorities are closely monitoring river levels in Katherine, hoping to avoid major flooding, but remaining fully prepared for potential escalation. Commissioner Dole confirmed that planning for recovery is underway even as emergency responses continue.
As ex-Tropical Cyclone Narelle continues its path towards Western Australia, the Northern Territory remains focused on managing the ongoing flood risks and supporting affected communities. The situation remains dynamic, and residents are urged to stay informed and heed the advice of emergency services.
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