North America GFS Surface Wind +192 hour Chart

Warmest night in decades for parts of WA

13:24 AEDT After a searing hot day, Western Australians sweltered through a near record warm night last night.   The uncomfortable days and nights are being caused by extremely hot and dry easterly winds flowing over the west coast in response to Severe Tropical Cyclone Sean.  Image: 850hPa temperature and wind at 8pm AWST on Monday, January 20 showing clockwise winds around Severe Tropical Cyclone Sean dragging a hot airmass from Australia’s interior all the way to the west coast.  This is causing a severe to extreme heatwave to impact southwestern WA, with Geraldton equalling its highest record temperature of 49.3°C on Monday.