Explanatory notes:
Scroll down below this section for forecast.
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 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).
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.
Whether or not the virga reached the ground depended on how much dry air is present below the clouds.
Winds have shifted northeasterly 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 today,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.
Monday March 26:
Perth metropolitan area:
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 especially in the late morning and afternoon.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:
Perth metropolitan area:
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:
Perth metropolitan area:
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:
Perth metropolitan area:
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:
Perth metropolitan area:
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:
Perth metropolitan area:
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:
Perth metropolitan area:
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 for today produced at 11:00 PM Sunday March 25,forecast for the rest of the days produced at 5:00 PM Sunday March 25.Weather icons courtesy of the US National Weather Service.
