Weather forecast for Perth effective as of 5:00 PM Thursday April 19

Weather forecast for Perth effective as of 5:00 PM Thursday April 19:

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 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 06 UTC(2 PM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

"Anticyclone gloom" associated with moist low level air trapped under a subsidence inversion affected the region for much of today.

Showers possible overnight and during the first half of Friday in a moist air stream with showers being enhanced by coastal land breeze convergence.

Sunny from late afternoon as drier air aloft moves in from the northwest.

A pre frontal trough or a cold front brings likely showers on Saturday then a stronger cold front moves over the region early on Sunday bringing plenty of showers.Can't rule out thunderstorms with some instability.

Post cold frontal showers affect the region thereafter with improving conditions from Tuesday as a ridge of high pressure builds to the south.

The rest of Thursday April 19:

City:

Mostly cloudy.

Chance of any rain:10%

Perth metropolitan area:

Mostly cloudy.Winds west-southwesterly at 15-25 km/h easing to 5-15 km/h at night.

Friday April 20:

City:

13-24 Degrees Celsius

Shower or two clearing.

Chance of any rain:50%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly to mostly cloudy becoming sunny by late afternoon.A medium(50%) chance of showers.Light winds becoming west-northwesterly at 10-20 km/h from morning becoming light at night.

Saturday April 21:

City:

13-26 Degrees Celsius

Shower or two.

Chance of any rain:60%

Amount:0 to 2 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(60%) chance of showers most likely from afternoon.Winds north-northeasterly at 10-20 km/h becoming north-northwesterly at 10-25 km/h from around the middle of the day becoming light at night.

Sunday April 22:

City:

16-22 Degrees Celsius

Showers.Possible thunderstorm.

Chance of any rain:95%

Amount:5 to 15 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.The chance of thunderstorms.Winds north-northeasterly at 10-20 km/h becoming northwesterly at 20-35 km/h from morning becoming west-northwesterly from afternoon.

Monday April 23:

City:

15-23 Degrees Celsius

Possible showers.

Chance of any rain:40%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly cloudy.A medium(40%) chance of showers.Winds west-southwesterly at 15-25 km/h becoming southwesterly from afternoon becoming light at night.

Tuesday April 24:

City:

11-23 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Light winds becoming south-southwesterly at 10-25 km/h from afternoon becoming south-southeasterly at 10-20 km/h at night.

Wednesday April 25:

City:

11-25 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds east-southeasterly at 10-20 km/h tending light in the afternoon and evening.

Thursday April 26:

City:

15-26 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds easterly at 15-25 km/h becoming light from afternoon.

Forecast produced at 5:00 PM Thursday April 19.Weather icons courtesy of the US National Weather Service.