Effective as of 4:00 PM Sunday December 19 2021
View the latest severe weather warnings from BOM at http://www.bom.gov.au/wa/warnings/ .
Explanatory notes:
Fine conditions with the subtropical high pressure ridge to the south.
Afternoon sea breezes with the west coast trough inland.
The west coast trough likely deepens near of off the west coast towards Christmas resulting in very hot conditions developing but still some uncertainty on the details and on maximum temperatures during the Christmas period with variation between models and model ensembles.