Weather forecast for Perth effective as of 12:00 AM Monday August 13

Weather forecast for Perth effective as of 12:00 AM Monday August 13
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).

Finally a sunny Sunday occured with a high pressure system over Southern Australia.

A cold front and associated rain band moves across the region late tonight/early on Tuesday,somewhat westerly air stream thereafter leading to stream showers.

Monday August 13:

City:

8-22 Degrees Celsius

Sunny day.Possible night shower or two.

Chance of any rain:40%

Amount:0 to 1 mm.

Perth metropolitan area:

Sunny day.A high(70%) chance of showers at night in the southwest,grading to a slight(20%) chance in the northeast.Winds north-northeasterly at 10-20 km/h becoming northerly at 20-30 km/h from late morning becoming north-northwesterly from afternoon.

Tuesday August 14:

City:

12-18 Degrees Celsius

Rain then shower or two.

Chance of any rain:100%

Amount:5 to 15 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(100%) chance of rain in the early hours easing to a medium(50%) chance of showers from early morning.Winds west-southwesterly at 15-25 km/h becoming southwesterly from late morning.

Wednesday August 15:

City:

8-17 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 southwesterly at 10-20 km/h during the day.

Thursday August 16:

City:

8-18 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 westerly at 10-20 km/h.

Friday August 17:

City:

9-19 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.

Saturday August 18:

City:

8-20 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of showers.Light winds.

Sunday August 19:

City:

9-19 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 2 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of showers.Light winds.

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.