Weather forecast for Perth effective as of 5:00 PM Tuesday September 4

Weather forecast for Perth effective as of 5:00 PM Tuesday September 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).

Perth experienced the wettest August in 50 years with 186.0 mm of rain so far!It was also the wettest winter month since June 2005 and the wettest winter in 15 years!

Subtropical high pressure ridge lies to the north throughout the forecast period,hence there is a chance of showers everyday of the next 7 days!


A cold front moves across the region early on Tuesday,another cold front moves across the region at night,cold air mass lies over the region thereafter.

Tuesday September 4:

City:

Showers.

Chance of any rain:90%

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers.Winds westerly at 20-30 km/h.

Wednesday September 5:

City:

9-16 Degrees Celsius

Showers easing.

Chance of any rain:90%

Amount:0.4 to 2 mm.

Perth metropolitan area:

Mostly cloudy.A very high(90%) chance of showers in the early hours,easing to a high(70%) chance from morning.Winds southwesterly at 20-30 km/h becoming light at night.

Thursday September 6:

City:

7-17 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.Light winds tending westerly at 10-20 km/h during the day.

Friday September 7:

City:

10-19 Degrees Celsius

Showers.

Chance of any rain:95%

Amount:1 to 4 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.Winds westerly at 15-25 km/h.

Saturday September 8:

City:

11-20 Degrees Celsius

Possible shower or two.

Chance of any rain:40%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(40%) chance of showers.Light winds tending west-northwesterly at 15-25 km/h during the day.

Sunday September 9:

City:

9-22 Degrees Celsius

Mostly sunny.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.A slight(20%) chance of a shower.Winds northwesterly at 10-20 km/h.

Monday September 10:

City:

12-19 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:2 to 8 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers.Winds west-northwesterly at 20-35 km/h shifting west-southwesterly later.

Tuesday September 11:

City:

10-17 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.Winds southwesterly at 20-30 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.