Weather forecast for Perth effective as of 5:00 PM Sunday March 25

Weather forecast for Perth effective as of 5:00 PM Sunday March 25:

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.Satellite loop of Tropical Cyclone Marcus.

Figure 3.Tropical Cyclone Marcus rapidly weakens during the weekend as it will be entering a region of high vertical wind shear and also lower sea surface temperatures

Figure 4.Tropical Cyclone Marcus rapidly weakens during the weekend as it will be entering a region of high vertical wind shear and also lower sea surface temperatures

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

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

Plenty of middle and high level clouds occurred on Saturday and Sunday associated with moisture aloft from what was Tropical Cyclone Marcus.Rain,showers and virga occurred at times.

Also a somewhat east-southeast pressure gradient.

Further middle and high level clouds for the rest of today with plenty of virga expected,whether or not it reaches the ground depends on how much dry air is present below the clouds.

Winds shift northeasterly later tonight and shifts north-northwesterly before 5 AM,bringing some low level clouds.

The remnants low of what was Tropical Cyclone Marcus will move over the region on Monday,the low pressure center passing just south of the Perth Area.

A low pressure trough to the north of the remnant low will bring showers to the Perth Area especially on the late morning and afternoon.

Likely plenty of low clouds with some possibly covering the tops of tall buildings in the city.

Cooler air mass then lies over the region with sunny conditions by Tuesday afternoon with a ridge of high pressure building to the south.

Warming conditions towards the end of the working week as a west coast trough forms near the west coast with some warm air advection.

Sunday March 25:

City:

Possible light rain and showers.

Chance of any rain:30%

Perth metropolitan area:

Cloudy.A slight(30%) chance of light rain and showers.Winds easterly at 15-25 km/h increasing to 20-30 km/h at night becoming northeasterly later at night.

Monday March 26:

City:

22-25 Degrees Celsius

Rain,drizzle and showers.

Chance of any rain:70%

Amount:0.4 to 3 mm.

Perth metropolitan area:

Cloudy,possibly overcast during the late morning and afternoon.A very high(90%) chance of rain,drizzle and showers in the southwest grading to a medium(60%) chance in the northeast.Winds north-northeasterly at 15-25 km/h becoming north-northwesterly before dawn increasing to 20-35 km/h from morning becoming westerly at 25-35 km/h from late afternoon then southwesterly becoming south-southwesterly at 15-25 km/h at night.

Tuesday March 27:

City:

16-24 Degrees Celsius

Clouds clearing.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny becoming sunny by afternoon.Winds south-southeasterly at 10-20 km/h tending south-southwesterly at 20-30 km/h in the afternoon and evening .

Wednesday March 28:

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 becoming south-southwesterly at 20-30 km/h from afternoon becoming southerly at 10-20 km/h at night.

Thursday March 29:

City:

13-26 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 becoming south-southeasterly at 10-25 km/h at night.

Friday March 30:

City:

15-30 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

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

Saturday March 31:

City:

16-29 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds southeasterly at 15-25 km/h.

Sunday April 1:

City:

16-30 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds east-southeasterly at 15-25 km/h.

Forecast produced at 5:00 PM Sunday March 25.Weather icons courtesy of the US National Weather Service.