Tropical cyclone Veronica has intensified to category three as it heads towards the Western Australian coast.

The Bureau of Meteorology said the forecast track has some uncertainty but there is potential for severe tropical cyclone impact along the Pilbara coast over the weekend.

People near Mardie and Pardoo, including Port Hedland, South Hedland, Wickham, Roebourne, Point Samson, Karratha and Dampier are being warned to prepare for cyclonic weather.