Communities along Australia's east coast are being urged to prepare for thunderstorms, with the wild weather set to sweep the region just one day after temperatures climbed above 30 degrees.

The dramatic swing in conditions has caught many off guard, with the rapid shift from intense heat to storm activity highlighting the volatile nature of spring weather patterns along the eastern seaboard.

Residents from cities to regional towns have been put on notice to take precautions ahead of the approaching storms. Authorities are advising people to stay informed about developing conditions as the weather system moves through the area.