Weather forecast for Perth effective as of 1:00 AM Friday April 6

Weather forecast for Perth effective as of 1:00 AM Friday April 6:

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 4.Key features identified on True Colour RGB satellite image at around 07:00 UTC(3 PM local time today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 5.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 6:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Weak pressure gradient leading to light winds today,light sea breeze advecting the marine layer inland from afternoon.

The radiational cooling of the moist marine layer overnight will bring the formation of areas of fog,mist and low clouds early on Saturday.

With the subtropical ridge slightly to the north moist west-southwesterly air stream on Saturday with possible showers especially around late morning and early afternoon with low level wind convergence.

The slight chance of fog again early on Sunday with radiational cooling of moist air overnight.

On Monday,a cold front possibly moves through the region bringing showers.

Some uncertainty on the precise synoptic conditions thereafter with variation between models and model ensembles.

Friday April 6:

City:

15-29 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds becoming east-northeasterly at 10-20 km/h in the morning becoming west-southwesterly at 10-20 km/h from afternoon becoming light at night.

Saturday April 7:

City:

17-24 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 0.2 mm.

Perth metropolitan area:

Partly to mostly cloudy.Areas of fog possible most likely in the north and east clearing by 8 AM.A slight(30%) chance of showers most likely in the late morning and early afternoon.Light winds becoming west-southwesterly at 10-20 km/h in the morning becoming southwesterly at 15-25 km/h from around the middle of the day becoming light late at night.

Sunday April 8:

City:

14-25 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Patches of fog possible clearing by 8 AM.A slight(20%) chance of a shower.Light winds becoming west-southwesterly at 10-20 km/h from afternoon.

Monday April 9:

City:

15-24 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 in the afternoon becoming light at night.

Tuesday April 10:

City:

14-23 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 becoming south-southwesterly at 20-30 km/h in the afternoon becoming south-southeasterly at 10-20 km/h at night.

Wednesday April 11:

City:

13-24 Degrees Celsius

Mostly sunny.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.A slight(20%) chance of a shower.Winds southeasterly at 10-20 km/h tending south-southwesterly at 15-25 km/h in the afternoon and evening.

Thursday April 12:

City:

13-25 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

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

Forecast for today produced at 1:00 AM,forecast for the rest of the days produced at 6:00 PM Thursday April 5.Weather icons courtesy of the US National Weather Service.