Weather forecast for Perth effective as of 7:00 PM Monday April 2

Weather forecast for Perth effective as of 7:00 PM Monday April 2:

Explanatory notes:
Scroll down below this section for forecast. 

Figure 1.Surface synoptic chart at  06 UTC(2 PM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4.Key features identified on True Colour RGB satellite image at around 07:00 UTC(3 PM local time today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 5.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 06 UTC(2 PM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 6:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

A warm air mass lied over the region today with the west coast trough slightly offshore.

The west coast trough moves inland from around the middle of the day tomorrow bringing a sea breeze,advecting the marine layer inland.Marine layer clouds likely from around 5 PM,from the coast first as predicted by ACCESS models.ECMWF has a sunny/clear bias in these scenario.

The radiational cooling of the moist marine layer overnight brings the possibility of areas of fog early on Wednesday,most likely in the north and east where the winds are lighter.

Southerly pressure gradient "bends" with solar heating on Wednesday leading to a significant sea breeze in the afternoon and evening with weaker pressure gradients towards the end of the working week leading to lighter winds by Friday.

Pressure gradient likely strengthens during the weekend leading to slightly stronger sea breezes.

Monday April 2:

City:

Clear.

Chance of any rain:0%

Perth metropolitan area:

Clear.Light winds becoming easterly at 10-25 km/h.

Tuesday April 3:

City:

19-32 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds becoming south-southwesterly at 10-25 km/h from afternoon becoming light later at night.

Wednesday April 4:

City:

17-28 Degrees Celsius

Clouds clearing.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy becoming sunny by afternoon.Areas of fog possible in the north and east clearing by 8 AM.Winds southerly at 10-20 km/h tending southwesterly at 20-30 km/h in the afternoon and evening.

Thursday April 5:

City:

16-28 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds east-southeasterly at 5-15 km/h tending southwesterly at 15-25 km/h in the afternoon and evening becoming light at night.

Friday April 6:

City:

16-29 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Light winds becoming south-southwesterly at 10-20 km/h becoming light at night.

Saturday April 7:

City:

16-26 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds becoming southwesterly at 15-25 km/h from around the middle of the day easing to south-southwesterly at 10-20 km/h at night.

Sunday April 8:

City:

15-27 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds south-southeasterly at 5-15 km/h becoming south-southwesterly at 20-30 km/h from afternoon easing to 15-25 km/h at night.

Monday April 9:

City:

15-25 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds south-southeasterly at 10-20 km/h becoming south-southwesterly at 20-30 km/h from afternoon easing to 15-25 km/h at night.

Forecast produced at 7:00 PM Monday April 2.Weather icons courtesy of the US National Weather Service.