Effective as of 4:00 PM Thursday December 9 2021
View the latest severe weather warnings from BOM at http://www.bom.gov.au/wa/warnings/ .
Explanatory notes:
The west coast trough moved inland during the late morning today with cooler but humid conditions in the onshore flow with the marine layer advecting the region. Plenty of low clouds associated with the marine layer overnight with the chance of showers, continuing in the moist onshore flow through Saturday. Also, the slight possibility of debated convection early tomorrow with instability aloft ahead of an upper level trough.
Subtropical high pressure ridge builds to the south from Sunday leading to fine conditions.
The rest of Thursday December 9:
City:
Chance of any rain:5%
Perth Metropolitan Area:
Partly to mostly cloudy.Winds westerly at 10-20 km/h becoming southwesterly at night.
Friday December 10:
City:
Possible shower.
Chance of any rain:30%
Amount:0 to 0.2 mm
Perth Metropolitan Area:
Partly cloudy.A slight(30%) chance of a shower most likely during the early hours, morning and at night.The chance of a thunderstorm early.Winds west-southwesterly at 10-20 km/h increasing to southwesterly at 20-30 km/h in the morning easing to 10-20 km/h at night.