Weather forecast for Perth effective as of 5:00 PM Monday May 21

Weather forecast for Perth effective as of 5:00 PM Monday May 21
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).

Unusually warm weather until Thursday with a blocking subtropical high pressure ridge to the south with a blocking high in the Great Australian Bight.

Also possible smoke haze at times depending on prescribed burns.

Late during the working week a strong cold front moves across the region ending the warm dry spell.The cold front will likely be accompanied by strong gusty winds and thunderstorms.Wind gusts in excess of 70 km/h possible.

The rest of Monday May 21:

City:

Clear.

Chance of any rain:0%

Perth metropolitan area:

Clear.Light winds.

Tuesday May 22:

City:

8-26 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds northeasterly at 10-20 km/h becoming light from afternoon.

Wednesday May 23:

City:

10-28 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Winds north-northeasterly at 15-25 km/h becoming light from afternoon.

Thursday May 24:

City:

13-29 Degrees Celsius

Late showers and thunderstorms,possibly heavy.

Chance of any rain:80%

Amount:5 to 35 mm.

Perth metropolitan area:

Partly cloudy.A high(80%) chance of showers and thunderstorms from late afternoon.Heavy falls possible.Winds north-northeasterly at 20-35 km/h becoming northwesterly from late afternoon.Gusty winds possible.

Friday May 25:

City:

13-18 Degrees Celsius

Showers and thunderstorms possibly heavy,easing early morning.

Chance of any rain:100%

Amount:5 to 35 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(100%) chance of showers and thunderstorms easing in the early morning.Winds west-northwesterly at 25-40 km/h.Gusty winds likely.

Saturday May 26:

City:

12-20 Degrees Celsius

Shower or two.

Chance of any rain:60%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(60%) chance of showers.Winds west-southwesterly at 20-30 km/h.

Sunday May 27:

City:

12-21 Degrees Celsius

Showers.

Chance of any rain:70%

Amount:0.4 to 3 mm.

Perth metropolitan area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds west-northwesterly at 15-25 km/h.

Monday May 28:

City:

13-21 Degrees Celsius

Showers.

Chance of any rain:70%

Amount:0.4 to 2 mm.

Perth metropolitan area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds west-southwesterly at 15-25 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.