Effective as of 4:00 PM Saturday April 24 2021
Explanatory notes:
Perth (and the Peel region) has entered its first day of lockdown. Follow the latest update at https://www.facebook.com/MarkMcGowanMP .
The west coast trough moved slightly inland this afternoon,the moist marine layer is advecting inland hence the slight possibility of fog and low cloud early on Sunday, fog most likely over the south of the state and to the north of Ellenbrook.
Warm afternoons over the next few days with the warm air mass over the region with the west coast trough remaining very near the coast and moving back and forth but cool to cold mornings given the lengthening nights as the season progresses.
I have increased the maximum temperature forecast for Monday Tuesday relative to OCF guidance taking into account today's maximum temperatures as a similar pattern is expected then with 850 hPa temperatures even slightly warmer though possibly an earlier sea breeze, particularly on Tuesday.
Possible smoke haze at times with prescribed burning activities.
A significant cold front or low pressure system is likely to move over the region on Friday or the slight possibility of late on Thursday with a cold air mass over the region thereafter but as usual some uncertainty on the details this far out.
.
Chance of any rain:0%
Perth Metropolitan Area:
Mostly clear.Winds southwesterly at 10-20 km/h becoming light at night.
Mostly sunny.
Chance of any rain:0%
Amount:Nil.
Perth Metropolitan Area:
Mostly sunny.The chance of fog early most likely over the far north.Light winds tending southwesterly at 10-20 km/h during the afternoon.
Partly cloudy.
Chance of any rain:0%
Amount:Nil.
Perth Metropolitan Area:
Partly cloudy.High clouds.Light easterly winds tending south-southwesterly at 10-20 km/h during the afternoon becoming light at night.
Partly cloudy.
Chance of any rain:5%
Amount:Nil.
Perth Metropolitan Area:
Partly cloudy.Light winds tending south-southwesterly at 10-20 km/h during the afternoon becoming southeasterly at night.
Partly cloudy.
Chance of any rain:5%
Amount:Nil.
Perth Metropolitan Area:
Partly cloudy.Winds east-southeasterly at 10-20 km/h tending south-southwesterly at 15-25 km/h during the afternoon.