Weather forecast for Perth effective as of 4:00 PM Wednesday May 30

Weather forecast for Perth effective as of 4:00 PM Wednesday May 30
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 5:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Dry today with a high pressure system over South Australia.

A cold front moves over the region on Thursday around the middle of the day.With atmospheric instability,the cold front could be accompanied by thunderstorms.

Cold air mass lies over the region thereafter,cold mornings as a ridge of high pressure builds.

Another cold front likely moves the region next Tuesday.

Wednesday May 30:

City:

High clouds(mostly clear).

Chance of any rain:0%

Perth metropolitan area:

High clouds(mostly clear).Light winds.

Thursday May 31:

City:

9-21 Degrees Celsius

Showers.Possible thunderstorm.

Chance of any rain:95%

Amount:3 to 10 mm.

Perth metropolitan area:

Partly cloudy.A very high(95%) chance of showers.The chance of thunderstorms in the late morning and afternoon.Winds north-northeasterly at 10-20 km/h becoming westerly at 15-25 km/h becoming light.

Friday June 1:

City:

8-18 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.

Saturday June 2:

City:

5-20 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds.

Sunday June 3:

City:

7-23 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds easterly at 10-20 km/h tending light from afternoon.

Monday June 4:

City:

11-22 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of showers.Winds north-northwesterly at 15-30 km/h.

Tuesday June 5:

City:

11-20 Degrees Celsius

Showers.Possible thunderstorm.

Chance of any rain:95%

Amount:4 to 15 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.The chance of a thunderstorms.Winds northerly at 20-35 km/h becoming northwesterly in the afternoon.

Wednesday June 6:

City:

11-17 Degrees Celsius

Showers.

Chance of any rain:80%

Amount:1 to 8 mm.

Perth metropolitan area:

Partly cloudy.A high(80%) chance of showers.Winds southwesterly at 20-35 km/h.

Forecast for today produced at 11:45 PM Monday May 7,forecast for the rest of the days produced at 5:00 PM Monday May 7.Weather icons courtesy of the US National Weather Service.