A heatwave in Western Australia's north is likely to bring record-smashing temperatures, the Bureau of Meteorology says.
Spokesman Neil Bennett said searing heat of 49C-50C was tipped for the Pilbara on Friday.
"We're likely to see records go at a number of locations," he told AAP.
Those under threat include 49.2C at Marble Bar, which was set in January 1922.
Mardie, where the state's hottest temperature of 50.5C was set in February 1998, was forecast to reach 49C, Mr Bennett said.
The national record is 50.7C, which was set at Oodnadatta in South Australia in January 1960.
Pardoo Station is also expected to swelter on Friday.
Mr Bennett urged miners working in the extreme conditions to drink plenty of water and take lots of breaks.
Perth's 55-day dry spell continues, with a smattering of rain around the city early on Thursday not registering in gauges.
"It pales into insignificance compared to the record longest dry spell of 83 days set between December 15, 1974, and March 7, 1975," Mr Bennett said.
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