7 day weather forecast

Effective as of 12:00 PM Sunday November 21 2021

View the latest severe weather warnings from BOM at http://www.bom.gov.au/wa/warnings/ .

Explanatory notes:

The onshroe flow has made onset with the west coast trough moving inland.Today, some elevated showers and thunderstorms are expected are developing with instability aloft ahead of an upper/middle level disturbance and some have already developed to the south.. With steep vertical lapse rates and high vertical wind shear with strong winds in the mid levels ahead of the upper/middle level distrubance, the thunderstorms could be accompanied by gusty winds, heavy falls and hail.The Australian Bureau of Meteorology (BOM) has issued a severe thunderstorm warning for damaging winds, large hailstones and heavy rainfall. View the latest warnings at http://www.bom.gov.au/wa/warnings/ .

The heat low moves southeastwards leading to some showers in the moist onshore flow during the early hours and morning of Monday. Fine conditions thereafter with the subtropical high pressure ridge building to the south. Becoming hot towards the end of the forecast period as the west coast trough deepens near the west coast with warm air advection.

Sunday November 21:

City:

Max:32  Degrees Celsius

Possible shower or thunderstorm.

Chance of any rain:50%

Amount:0 to 10 mm

Perth Metropolitan Area:

Partly cloudy.A slight(30%) chance of showers and/or thunderstorms.The chance of gusty winds, heavy falls and hail with the thunderstorms.Winds westerly at 20-35 km/h becoming southwesterly later this afternoon.

Monday November 22:

City:

15-23  Degrees Celsius

AM showers.

Chance of any rain:70%

Amount:1 to 3 mm

Perth Metropolitan Area:

Partly cloudy.A high(70%) chance of showers in the early hours and morning.Winds south-southwesterly at 20-30 km/h.

Tuesday November 23:

City:

12-25  Degrees Celsius

Clouds clearing.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

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

Wednesday November 24:

City:

13-29  Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

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

Thursday November 25:

City:

15-32  Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds east-southeasterly at 20-30 km/h tending southeasterly at 10-20 km/h in the afternoon.

Friday November 26:

City:

18-33  Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Sunny.Winds east-northeasterly at 15-25 km/h tending south-southwesterly in the afternoon.

Saturday November 27:

City:

20-34  Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Sunny.Winds east-northeasterly at 15-25 km/h tending south-southwesterly in the afternoon.

Figure 1.Surface synoptic chart.Image courtesy of the Australian Bureau of Meteorology(BOM).

The Australian Bureau of Meteorology (BOM) has issued a severe thunderstorm warning for damaging winds, large hailstones and heavy rainfall. View the latest warnings at http://www.bom.gov.au/wa/warnings/ .

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image. Image courtesy of the Australian Bureau of Meteorology(BOM)

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

No liabilities held from information consumed on this site. Weather icons are from the US National Weather Service.Some information on this site is from the Australian Bureau of Meteorology (BOM).