Fire authorities are warning of severe fire danger across parts of WA on Thursday, with residents urged to have their bushfire survival plans ready.

The Department of Fire and Emergency Services (DFES) issued severe fire danger advice for parts of the Central Wheatbelt, inland parts of Gascoyne and coastal parts of the Pilbara.

DFES is advising residents that bushfires can threaten suddenly and they should stay alert, watch for signs of fire and have bushfire survival plans ready.

If people see flames they should call triple zero.