A line of storms has ripped through the Goldfields city of Kalgoorlie-Boulder felling trees, bringing down power poles and flooding the streets.

The sudden storms brought strong winds - one gust as high as 107 kilometres per hour was recorded at the airport - with hail and 12mm of rain causing damage to properties across the city.

Trees were felled in Kalgoorlie by the storm. Credit:ABC Goldfields

The Bureau of Meteorology said the conditions should ease soon, and locals are now cleaning up the mess.