Weather forecast for Perth effective as of 12:00 AM Wednesday May 2

Weather forecast for Perth effective as of 12:00 AM Wednesday May 2:

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 yesterday).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).

Much cooler air mass lies over the region bringing typical late autumn weather with 850 hPa temperatures of around 3 Degrees Celsius.

A weak cold front brushes the region today around late morning.

Showers also possible before and after the cold frontal passage in the cold air mass.

On Thursday land breeze convergence creates a line of showers offshore,anvil is to spread a little inland.

Likely radiational cooling of already cool air results in a chilly morning on Friday.

Warm conditions back by the weekend with warm air advection.

Wednesday May 2:

City:

12-20 Degrees Celsius

Shower or two.

Chance of any rain:70%

Amount:0.4 to 2 mm.

Perth metropolitan area:

Partly cloudy.A high(70%) chance of showers.Light winds becoming southwesterly at 20-35 km/h from morning becoming south-southwesterly at 10-20 km/h at night.

Thursday May 3:

City:

10-21 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of a shower over coastal suburbs in the early hours and morning.Light winds tending south-southwesterly at 10-20 km/h in the afternoon and evening.

Friday May 4:

City:

8-23 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Light winds.

Saturday May 5:

City:

10-26 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds east-southeasterly at 10-20 km/h becoming light from afternoon becoming east-northeasterly at 10-20 km/h at night.

Sunday May 6:

City:

15-26 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 0.4 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of showers.Winds east-northeasterly at 10-20 km/h becoming light from afternoon.

Monday May 7:

City:

14-24 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 0.4 mm.

Perth metropolitan area:

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

Tuesday May 8:

City:

13-25 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.

Forecast for today produced at 11:30 PM Tuesday May 1,forecast for the rest of the days produced at 4:00 PM Tuesday May 1.Weather icons courtesy of the US National Weather Service.