Hailstones up to 1.5cm were reported in Perth's northern suburbs earlier this evening as a big thunderstorm hit Perth and moved south-east through the metropolitan area.
About 4.45pm, the Bureau of Meteorology issued a severe thunderstorm warning for people in the area bounded by Mullewa, Yalgoo, Mount Jackson, Southern Cross, Corrigin, Mandurah and Jurien Bay.
The warning included those in or near the Perth metropolitan area, York, Dalwallinu and Southern Cross, with the storms likely to produce damaging winds, big hailstones and heavy rain.
Flash flooding was possible in parts of the Gascoyne, Central West, Lower West and Central Wheat Belt.
The storm moved in over Perth's northern suburbs about 5.30pm.
Hail up to 1.5cm was reported at Joondalup between 5.30pm and 6pm, according to the Weather Bureau.
Some 26mm of rain fell at Perth Airport between 6pm and 7pm.
The Weather Bureau cancelled the severe thunderstorm warning just after 9pm. The risk of severe thunderstorms had passed although storms and showers would continue.
The bureau would continue to monitor the situation and issue more alerts if necessary.
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Large hail has been reported from a thunderstorm near Moora earlier this afternoon.
The Fire and Emergency Services Authority has advised people to close their curtains and blinds and stay away from windows and unplug electrical appliances.
Those outside are being urged to find safe shelter away from trees, power lines, storm water drains and streams.
Motorists are being encouraged to drive carefully.