Parts of the Gascoyne and Goldfields in WA warmed to as much as eight above average on Saturday, while in the far south it was as much as 10 below average.
During Saturday a trough lingering over Western Australia separated two very different airmasses. To the north, an exceptionally hot and dry airmass with a cool, moist one to the south.
The Kimberley had the hottest temperatures in the state, reaching 43 degrees at Derby, Fitzroy Crossing and Wyndam. Although it was in the Gascoyne and northern Goldfields where the greatest variance to the average was achieved. In both Yeelirre (Goldfields) and Meekatharra (Gascoyne) the mercury climbed to 41 which is eight degrees above average. For Yeelirre it was their hottest day since February. At 5:30pm in Meekatharra it was still 40 degrees with a dew point of minus 21 and humidity levels at just 2%, highlighting just how hot and dry the airmass was.
South of the trough, in the cool and moist airmass, the majority of the South Coastal had top temperatures of four to six degrees below average. At Balladonia (Eucla) it only reached 18 degrees, 10 below average.
In Norseman (southern Goldfields) it only reached 19 degrees which is also 10 below average. However, in the northern Goldfields, Leinster (488km away) it hit 40 degrees, 8 above average.
On Sunday temperatures will warm in the south as heat is drawn ahead of the next trough.
© Weatherzone 2013
12:23 EDT Seven days out, forecasts still suggest Christmas Day in Australia will be typically hot, humid and thundery in the north, windy in the south, wet in the southeast and dry on the west coast.