Lightning has forced the closure of beaches in Perth's northern suburbs this morning.
Lifeguards at Mullaloo and Quinns closed beachs just after 8am.
A storm front is crossing the coast north of Perth, bringing with it lightning and heavy rain.
The Weather Bureau has forecast a thunderstorm later this morning.
Showers and storms are forecast for much if the State today, clearing later today but returning tomorrow.
A strong wind warning has been issued for Perth local waters,. Bunbury Geographe Coast and the Leeuwin Coast.