Weather forecast for Perth effective as of 12:00 AM Saturday August 4

Weather forecast for Perth effective as of 12:00 AM Saturday August 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 3.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 4.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).

Deep cold air mass lies over the region until afternoon today leading to showers,the chance of small hail.During the afternoon,showers easing.Gusty winds with showers.

"Anticyclone gloom" lies over the region on Sunday and Monday.

Saturday August 4:

City:

9-15 Degrees Celsius

Showers.Windy at times.

Chance of any rain:95%

Amount:2 to 8 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.The chance of small hail in the morning.Winds south-southwesterly at 25-45 km/h.Gusty winds with showers.

Sunday August 5:

City:

6-16 Degrees Celsius

Mostly cloudy day.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Mostly cloudy day.A slight(20%) chance of a shower.Winds southerly at 10-20 km/h increasing to 20-30 km/h from around the middle of they day becoming light at night.

Monday August 6:

City:

5-17 Degrees Celsius

Cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Cloudy.A slight(20%) chance of showers and/or drizzle.Light winds becoming westerly at 10-20 km/h from around the middle of the day.

Tuesday August 7:

City:

11-19 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 1 mm.

Perth metropolitan area:

Mostly cloudy.A medium(50%) chance of showers especially at night.Winds westerly at 15-25 km/h.

Wednesday August 8:

City:

11-19 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:4 to 10 mm.

Perth metropolitan area:

Mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm.Winds west-northwesterly at 20-30 km/h increasing to 35-50 km/h becoming southwesterly at night.Gusty winds likely.

Thursday August 9:

City:

10-16 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:4 to 10 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm.Winds southwesterly at 25-40 km/h.

Friday August 10:

City:

6-16 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 southerly at 10-25 km/h.

Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 4:20 PM Wednesday July 11.Weather icons courtesy of the US National Weather Service.