Weather forecast for Perth effective as of 12:00 AM Thursday April 26

Weather forecast for Perth effective as of 12:00 AM Thursday April 26:

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 2.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.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).

It was a sunny ANZAC Day with an afternoon sea breeze with the high pressure ridge to the south.A west coast trough is forming near the west coast with slight warm air advection.

Warm air mass over the region today with the weak west coast trough deepening near the west coast,the west coast trough moves inland from around the middle of the day resulting in a sea breeze.High clouds could restrict maximum temperatures though.High clouds and also some middle level clouds move in ahead of an upper/middle level trough/disturbance move in from afternoon.

The west coast trough lies inland on Friday resulting in a southeasterly pressure gradient which "bends" with solar heating during the day resulting in a sea breeze.Much weaker than the summer counterpart though with reduced water-land temperature gradient.

Warm air advection with a west coast trough deepening near the west coast again next weekend.High clouds again on Sunday.

The west coast trough moves inland on Monday with typical late autumn weather from Tuesday as a colder air mass moves over the region with some cold air advection.

Thursday April 26:

City:

10-26 Degrees Celsius

Clouds increasing.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny morning becoming partly to mostly cloudy by evening.High clouds.Winds east-northeasterly at 10-20 km/h becoming west-southwesterly at 10-20 km/h from afternoon becoming south-southwesterly from late afternoon becoming southerly at night.

Friday April 27:

City:

13-25 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds south-southeasterly at 10-20 km/h tending south-southwesterly at 15-30 km/h in the afternoon and evening.

Saturday April 28:

City:

13-27 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds east-southeasterly at 15-25 km/h becoming light from afternoon.

Sunday April 29:

City:

17-30 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Winds northeasterly at 20-30 km/h becoming light from afternoon becoming east-northeasterly at 10-20 km/h at night.

Monday April 30:

City:

17-27 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds northeasterly at 20-30 km/h shifting west-northwesterly at 20-30 km/h later during the day becoming south-southwesterly later.

Tuesday May 1:

City:

13-21 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of showers.Winds south-southwesterly at 15-25 km/h.

Wednesday May 2:

City:

10-20 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of a shower.Winds southerly at 15-25 km/h.

Forecast produced at 6:00 PM Wednesday April 25.Weather icons courtesy of the US National Weather Service.