A severe thunderstorm alert has been issued for parts of the Riverina, warning of locally intense rainfall that could lead to life-threatening flash flooding.
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The Bureau of Meteorology updated an earlier-issued alert just after 8.30am on Tuesday, January 16, which said slow-moving severe thunderstorms were producing heavy, locally intense rainfall in the region.
"Very dangerous thunderstorms are likely to produce heavy, locally intense rainfall that may lead to dangerous and life-threatening flash flooding in the warning area over the next several hours," the bureau's warning said.
The area covered by the warning has now been expanded to include more towns, including Deniliquin, Griffith, Hay, Narrandera, Wentworth and Balranald.
The earlier weather alert, issued at 6.13am, had warned of "very dangerous" storms around Hay and Griffith.
Hay Airport recorded 38 millimetres of rain in one hour to 6am, the bureau said, while Groongal had 38mm in the two hours to 8.25am.
Hay Airport has recorded 49.2mm between 5am and 8.30am on Tuesday.
The bureau said Wagga could expect a medium chance of showers on Tuesday, becoming less likely in the early afternoon. There's also the chance of a thunderstorm in the morning and early afternoon.
The State Emergency Service has advised people to:
- Keep clear of creeks and storm drains.
- Don't walk, ride your bike or drive through flood water.
- If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
- Be aware that run-off from rainfall in fire affected areas may behave differently and be more rapid. It may also contain debris such as ash, soil, trees and rocks.
- After bushfires, heavy rain and the loss of foliage can make the ground soft and heavy, leading to a greater chance of landslides.
- Unplug computers and appliances.
- Avoid using the phone during the storm.
- Stay indoors away from windows, and keep children and pets indoors as well.
- Stay vigilant and monitor conditions. Note that the landscape may have changed following bushfires.
- For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.
The next warning is due to be issued by 11:35 am.