Weather forecast for Perth effective as of 12:00 AM Thursday September 20

Weather forecast for Perth effective as of 12:00 AM Thursday September 20
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!

A ridge of high pressure lies to the south.Sea breezes occurred in the afternoon yesterday,weaker today with a northeasterly pressure gradient with a west coast trough deepening near the west coast.

Patches of fog occurred early yesterday,possible again early today.

The west coast trough moves inland from Friday leading to stronger sea breezes back.

Thursday September 20:

City:

7-24 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Patches of fog possible early.Light winds tending southwesterly at 10-20 km/h in the afternoon.Maximum temperatures ranging from around 21 Degrees Celsius over coastal areas to around 25 Degrees Celsius over inland coastal plain areas,around 24 Degrees Celsius near the city.

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 tending south-southwesterly at 10-20 km/h during the afternoon becoming south-southeasterly at night.

Saturday September 22:

9-25 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

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 25 Degrees Celsius near the city.

Sunday September 23:

9-23 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy,high clouds.Light winds tending southwesterly at 15-25 km/h during the afternoon.

Monday September 24:

9-22 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0  mm.

Perth metropolitan area:

Partly cloudy.Light winds tending southwesterly at 15-25 km/h during the afternoon.

Tuesday September 25:

10-22 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0  mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of a shower.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:10%

Amount:0  mm.

Perth metropolitan area:

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

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.