The Bureau of Meteorology has cancelled its severe thunderstorm warning for Canberra and the surrounding region.

Lightning flashes over the Kingston Foreshore on Thursday night. Credit:Sitthixay Ditthavong

AT 6.45pm, it said, "Cancellation Severe Thunderstorm Warning for people in South Coast, Central Tablelands, Southern Tablelands, Central West Slopes and Plains, South West Slopes, Snowy Mountains and Australian Capital Territory Forecast Districts."

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The State Emergency Service advised that people should still be careful:

Keep clear of fallen power lines.

Keep clear of creeks and storm drains.

Don't walk, ride your bike or drive through flood water.

For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.

The bureau said that information was available at its website, www.bom.gov.au or by calling 1300 659 218.