Weather forecast for Perth effective as of 5:30 PM Friday May 4

Weather forecast for Perth effective as of 5:30 PM Friday May 4
Explanatory notes:
Scroll down below this section for forecast. 

Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 2.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time yesterday).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).

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

A cold air mass lied over the region on Thursday.A smoke plume lied aloft trapped under a temperature inversion Thursday evening.

Radiational cooling of already cool air results in a chilly morning on Friday.Minimum temperatures could drop below 5 Degrees Celsius in hollow areas!

Warm conditions back by Saturday with a warm air mass over the region.

Another cold front moves over the region on Sunday.

The rest of Friday May 4:

City:

Partly cloudy.

Chance of any rain:0%

Perth metropolitan area:

Partly cloudy.Winds south-southwesterly at 10-20 km/h in the afternoon becoming east-southeasterly at night.

Saturday May 5:

City:

10-28 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds east-northeasterly at 10-25 km/h becoming north-northeasterly from early afternoon then becoming light.

Sunday May 6:

City:

17-24 Degrees Celsius

Showers.

Chance of any rain:95%

Amount:3 to 7 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.The chance of a thunderstorm.Winds northwesterly at 20-35 km/h becoming westerly later then southwesterly.

Monday May 7:

City:

14-22 Degrees Celsius

Partly to mostly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly to mostly cloudy.Light winds.

Tuesday May 8:

City:

12-24 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds south-southeasterly at 10-25 km/h.

Wednesday May 9:

City:

12-26 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Winds east-southeasterly at 15-25 km/h.

Thursday May10:

City:

15-26 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Winds east-northeasterly at 20-30 km/h.

Friday May 11:

City:

15-27 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds northeasterly at 15-25 km/h shifting northwesterly later.

Forecast produced at 5:30 PM Friday May 4.Weather icons courtesy of the US National Weather Service.