7 day weather forecast

Effective as of 4:00 AM Monday April 26 2021

Explanatory notes:

Perth (and the Peel region) is in the third day of lockdown. Follow the latest update at https://www.facebook.com/MarkMcGowanMP .  

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.

High and middle level clouds at times streaming in the subtropical jet stream with embedded weak upper level troughs and the broad longwave trough to the west.

Possible smoke haze at times with prescribed burning activities.

A significant cold front 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 bringing further showers. There is the possibility of thunderstorms with the cold frontal passage with moist and unstable air ahead of the front and also (along with possible small hail) behind the cold front in the unstable deep cold air mass/ upper level cold pool but still some uncertainty on how far north the upper level cold pool extends this far out in time.

There is the possibility of another cold front moving over the region coming from the south during the weekend but still some uncertainty this far out in time with variation between models and models and ensembles.

​

.

Monday April 26:

City:

12-30  Degrees Celsius

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.

Tuesday April 27:

City:

14-28  Degrees Celsius

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.

Wednesday April 28:

City:

14-28  Degrees Celsius

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.

Thursday April 29:

City:

14-27  Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:Nil.

Perth Metropolitan Area:

Partly cloudy.A slight(20%) chance of showers most likely from afternoon.Light winds becoming westerly at 10-20 km/h during the afternoon.

Friday April 30:

City:

15-22  Degrees Celsius

Showers.

Chance of any rain:90%

Amount:8 to 20 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm.Winds north-northwesterly at 10-20 km/h shifting west-southwesterly at 30-45 km/h later during the day.

Saturday May 1:

City:

12-20  Degrees Celsius

Possible shower or two.

Chance of any rain:40%

Amount:0 to 2 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A medium(40%) chance of showers.Winds westerly at 10-20 km/h.

Sunday May 2:

City:

11-22  Degrees Celsius

Possible shower or two.

Chance of any rain:40%

Amount:0 to 3 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A medium(40%) chance of showers.Light winds becoming southerly at 10-20 km/h later during the day.

Charts:

                                   

Figure 1.Surface synoptic chart.Image courtesy of the Australian Bureau of Meteorology(BOM).

 2. 

Figure 2.Key features identified on True Colour RGB satellite image.Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image. Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

No liabilities held from information consumed on this site. Weather icons are from the US National Weather Service.Some information on this site is from the Australian Bureau of Meteorology (BOM).