Thursday: Southerly 20/30 knots. Seas: 2/3 metres. Swell: South to southeasterly 1.5/2.5 metres. Friday: Southwesterly 15/25 knots, reaching 30 knots in the morning, mainly offshore. Seas: 2/3 metres, decreasing to 1.5/2 metres during the afternoon. Swell: Southerly 2/3 metres, increasing to 3/4 metres offshore. Outlook Saturday: Southwesterly 15/20 knots turning south to southeasterly 10/15 knots in the evening. Seas: 1/2 metres, decreasing to 1/1.5 metres during the day. Swell: Southerly 2/3 metres, reaching 4 metres offshore. Outlook Sunday: Variable about 10 knots becoming south to southeasterly 10/15 knots during the day. Seas: Below 1 metre. Swell: Southerly 1.5/2.5 metres.Issued Thu 16:05 EDT
18:56 EDT A series of spectacular electrical storms over Perth has blacked out more than 27,000 homes and businesses and caused flight delays.