Weather forecast for Perth effective as of 12:00 AM Friday September 21

Weather forecast for Perth effective as of 12:00 AM Friday September 21
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).

A west coast trough deepened near the west coast on Thursday,sea breeze occurred in the afternoon,relatively large difference in maximum temperatures between coastal and inland coastal plain areas with a warm air mass over the region.

The west coast trough moves inland today leading to stronger sea breezes.

Friday September 21:

City:

7-23 Degrees Celsius

High clouds(partly cloudy).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(partly cloudy).Light winds becoming south-southwesterly at 10-20 km/h from afternoon becoming south-southeasterly at night.

Saturday September 22:

9-24 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds tending southwesterly at 10-25 km/h in the afternoon.Maximum temperatures ranging from around 21 Degrees Celsius over coastal areas to around 26 Degrees Celsius over inland coastal plain areas,around 24 Degrees Celsius near the city.

Sunday September 23:

9-23 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy,high clouds.Patches of fog possible early.Light winds tending south-southwesterly at 10-20 km/h during the afternoon.

Monday September 24:

9-23 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0  mm.

Perth metropolitan area:

Mostly sunny.Light winds becoming southwesterly at 10-20 km/h during the afternoon becoming southerly by night.

Tuesday September 25:

10-22 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0  mm.

Perth metropolitan area:

Mostly sunny.Light winds tending southwesterly at 15-25 km/h during the afternoon.

Wednesday September 26:

10-21 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0  mm.

Perth metropolitan area:

Mostly sunny.Winds southeasterly at 10-20 km/h tending south-southwesterly at 20-30 km/h during the afternoon.

Thursday September 27:

10-23 Degrees Celsius

Mostly sunny.

Chance of any rain:10%

Amount:0  mm.

Perth metropolitan area:

Mostly sunny.Winds southeasterly 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.